Cladding & Render
85 sources in the library on cladding & render, 22 on this page cited in a published note. Each one says what the document covers and what it is good for. Name a source to see which document it is and where to read it. One at a time. Page 1 of 3.
- very strong RN-5CL50F cited
Building Control Northern Ireland
The index of Northern Ireland's Technical Booklets, the devolved equivalent of England's Approved Documents, and the place to check which NI booklet answers a question. The booklets run B materials and workmanship, C site preparation and resistance to contaminants and moisture, D structure, E fire safety, F1 conservation of fuel and power in dwellings (2022 edition) and F2 for buildings other than dwellings, G sound, H stairs ramps and guarding, J solid waste, K ventilation, L combustion appliances and fuel storage, M physical infrastructure for high speed electronic communications networks, N drainage, P sanitary appliances and unvented hot water storage, R access to and use of buildings, and V glazing. Amendment booklets AMD7 (amends B, C and E), AMD8 (amends R) and AMD9 (amends E and R) carry the live changes, so the base 2012 booklets must be read with them.
- very strong RN-NPO8FJ cited
Ministry of Housing, Communities and Local Government
The statutory figures behind a damp diagnosis, and the numbers to quote when a note explains why ground levels or a bridged damp proof course cause rising damp. Paragraph 5.2 requires that in an external wall the damp-proof course should be at least 150mm above the level of the adjoining ground (Diagram 8) unless part of the building protects the wall, and that in an external cavity wall the cavity should be taken down at least 225mm below the level of the lowest damp-proof course, or a damp-proof tray provided (Diagram 9a). For suspended timber ground floors it requires a ventilated air space of at least 75mm from the ground covering to the underside of any wall-plates and at least 150mm to the underside of the suspended timber floor or insulation, with ventilation openings on two opposing external walls of not less than 1,500mm2 per metre run of external wall or 500mm2 per square metre of floor area, whichever is greater; for suspended concrete floors the clear ventilated space is at least 150mm with the same opening sizes. Section 2.39 onwards covers radon, referring to BRE Report BR 211 for protective measures. The 2013 edition was published on 3 September 2013 with changes in effect from 1 October 2013.
Cited in Barge Boards, Fascias & Soffits: Cost & Replacement, Breathable Membranes for Roofs & Walls, Brick Slips & Brick Cladding Systems, Build Basement Cost: 2026 UK Price Guide and 35 more.
- very strong RN-PNPQR7 cited
Ministry of Housing, Communities and Local Government
The remediation funding route, and the reason a cladding note must separate a house from a block of flats. The scheme applies to buildings 11 metres and above, measured from the lowest external ground level to the finished floor level of the top occupied storey, excluding plant rooms and non-residential facilities such as storage or gyms; separate new funding covers buildings under 11 metres. Homes England administers applications through the Building Remediation Hub. It funds reasonable eligible costs for works addressing life safety fire risks in cladding and external wall systems, covering removal and replacement, access and scaffolding, professional fees, managing agents' fees and Fire Risk Appraisal costs, but not general maintenance, window replacement, insurance premiums or the running costs of interim measures. Applications come from the Responsible Entity, usually the freeholder, head leaseholder, registered provider or management company, and leaseholders cannot apply directly. A Fire Risk Appraisal of External Walls by a certified assessor using PAS 9980:2022 is required. The Building Safety Act 2022 protects qualifying leaseholders from cladding remediation costs. The scheme launched July 2023, the FRAEW panel requirement began 1 November 2023, works are eligible from 10 January 2022, and the social sector expansion took effect 11 June 2025.
- very strong RN-Y19S87 cited
Office for Product Safety and Standards and Ministry of Housing, Communities and Local Government
Names the Office for Product Safety and Standards as the UK regulator for construction products and most consumer goods, a role it took on in April 2021, funded by and acting on behalf of MHCLG. Confirms the enforced legislation is the Construction Products Regulations 2013 as amended by the Construction Products (Amendment) Regulations 2022, which gave OPSS its enforcement powers. Records that the Grenfell Tower Inquiry final report was published on 4 September 2024, the Government response on 26 February 2025 accepting all 58 recommendations, and a Construction Products Reform White Paper on 25 February 2026 proposing reform of testing, certification, product information and enforcement. OPSS carries out product testing, site inspections and technical documentation reviews, responded to over 100 non-compliance allegations in 2023, and publishes construction product safety alerts, reports and recalls.
- very strong RN-CU5JJM cited
Planning Portal
The permission question a cladding or render note must answer. Outside protected areas, cladding is permitted development where the materials are of a similar appearance to those used in the construction of the house. Planning permission is required before cladding the outside of a house with stone, artificial stone, pebble dash, render, timber, plastic or tiles in a conservation area, a National Park, an Area of Outstanding Natural Beauty or the Broads. A listed building needs listed building consent for any significant works, internal or external. No permission is needed for repairs, maintenance or minor improvements such as painting the house. Building Regulations approval is a separate matter, with guidance covering fire protection, thermal resistance, weather resistance and structural loading, and the Planning Portal advises checking with the local planning authority because additional local rules may apply.
- very strong RN-QJIETI cited
Scottish Government (gov.scot)
Scotland's U-value backstops, which differ from England's Approved Document L and are the numbers to quote for a Scottish reader. Table 6.3 for new dwellings gives area-weighted average maximum U-values in W/m2K of wall 0.22, floor 0.18, roof 0.15, windows, doors and rooflights 1.6, and cavity separating wall 0.2, with individual element values of 0.70 for wall and floor, 0.35 for roof and 3.3 for windows, doors and rooflights. A cavity separating wall can be assigned 0.2 where the cavity has effective perimeter sealing around all exposed edges in line with the insulation layers of abutting elements, and 0.0 where the cavity is also fully filled with a material limiting air movement. Table 6.5 for extensions and conversions is two-column: where the existing dwelling's wall and roof U-values are poorer than 0.7 and 0.25 respectively, wall 0.17, floor 0.15, pitched roof with insulation between ceiling ties or collars 0.11, flat or pitched roof with insulation between rafters or integral 0.13 and windows, doors and rooflights 1.4; where those parameters do not apply the figures relax to 0.22, 0.18, 0.15, 0.18 and 1.6, with individual element values of 0.70, 0.70, 0.35, 0.35 and 3.3. Localised poorer areas such as a meter box must be compensated by the rest of the element and are important for condensation control, while repeating thermal bridges such as timber studs are not treated as individual elements because they are already in the BS EN ISO 6946 calculation.
Cited in Insulation: The Complete Guide.
- very strong RN-8USAEI cited
The National Archives
the regulation that brings external wall insulation on an existing house within Part L
Cited in House Rendering Cost: Whole-House Render Prices (2026).
- very strong RN-Z3KFVU cited
The National Archives (legislation.gov.uk)
The regulation behind the combustible cladding ban. Regulation 7(2) requires materials in the external walls or specified attachments of a relevant building to achieve European Classification A2-s1, d0 or A1 for reaction to fire, and regulation 7(1A) prohibits relevant metal composite materials in external walls. Regulation 7(4) defines a relevant building as one with a storey at least 18 metres above ground level, excluding roof-top plant areas and storeys consisting only of plant rooms, containing one or more dwellings, an institution, or a room for residential purposes. Regulation 7(3) lists the exempt components: cavity trays between masonry leaves, parts of roofs connected to external walls, door frames and doors, electrical installations, fibre optic cables, insulation and waterproofing below ground or up to 300mm above it, intumescent and fire-stopping materials, membranes, seals, gaskets, fixings, sealants and backer rods, solar shading device components other than the primary shade element, thermal break materials used for Part L compliance, window frames and glass, and balcony floor layers classified A1fl or A2fl-s1 over an imperforate substrate.
Cited in Cladding and Render: The Complete UK Guide (2026), External Wall Insulation (EWI) Systems & Finishes, House Cladding Cost: 2026 UK Price Guide, Kingspan & Celotex PIR Boards: Sizes & Cost and 1 more.
- very strong RN-03F4DZ cited
The National Archives (legislation.gov.uk), UK Statutory Instrument 2022/603
The amendment that tightened the England combustible cladding ban, made under sections 1 and Schedule 1 of the Building Act 1984 and in force on 1 December 2022, extending to England and Wales but expressly not applying to any building in Wales. It inserts the definitions that decide the ban's reach. Reaction to fire classification is fixed as BS EN 13501-1:2018 published by BSI in 2019. Relevant metal composite material means any panel or sheet no more than 10 mm thick comprised of layers, two or more of metal, alloy or metal compound, and one or more substantial layer of a material with a gross calorific value of more than 35 MJ/kg tested to BS EN ISO 1716:2018, with a substantial layer defined as at least 1 mm thick or at least 1 kg per square metre. Specified attachment means a balcony attached to an external wall, a solar shading device other than one attached at a height of no more than 4.5 metres above ground level, or a solar panel attached to an external wall. It also lowers the material change of use trigger in regulation 6(1)(c) from fifteen to eleven metres, and substitutes regulation 6(3) so that on a material change of use under regulation 5(k) the external wall and specified attachments must contain only Class A2-s1, d0 or A1 materials. Regulation 7(2) is substituted in the same terms.
- strong RN-7RBV1N cited
BSI
the workmanship code of practice for masonry, covering mortar mixing and jointing on site
Cited in Brick Slips & Brick Cladding Systems, Bricklaying Bonds & UK Brick Sizes, Concrete Blocks: Aircrete vs Dense vs Hollow.
- strong RN-9A1H9G cited
BSI
The standard that produces the Euroclass letter, and the one regulation 7(2) of the Building Regulations names by title and ISBN when it requires external wall materials on a relevant building to be Class A2-s1, d0 or A1. Published 31 Jan 2019 and Current. Part 1 provides the reaction to fire classification procedure for all construction products, including products incorporated within building elements, with the sole exception of power, control and communication cables which are classified under EN 13501-6. Products are considered in relation to their end-use application, which is why an insulation board or cladding panel cannot carry a meaningful Euroclass in the abstract: the classification attaches to the product as used in a stated build-up. This is the reference for reading the suffixes as well as the letter, s for smoke production and d for flaming droplets.
Cited in Cladding and Render: The Complete UK Guide (2026), PIR vs Mineral Wool Insulation Compared.
- strong RN-WDGC6T cited
BSI
The standard behind a correct render specification, published 31 March 2016 and current but under review. It sets requirements and recommendations for the design, preparation and application of renders based on cement, lime or other mineral binders and combinations of them, masonry cement, polymer modified binder based renders, and renders with organic binders. It covers rendering on both new and old backgrounds and the maintenance and non-structural repair of existing work, and gives guidance on site-made, factory-made and semi-finished factory-made renders, including material requirements for reinforcement, carriers and beads and for screws, plugs and anchor fixings, and the background characteristics that govern the design of a rendering system. It explicitly excludes external thermal insulation composite systems (ETICS), gypsum-based external renders, historic monument rendering, concrete structural repair, liquid-retaining structures, sealant specification and flashing design, which is worth noting because EWI render is covered elsewhere.
Cited in Cladding and Render: The Complete UK Guide (2026), Render Beads, Mesh & Stop Beads, Render Types: Sand-Cement, Monocouche & Acrylic.
- strong RN-NMRO24 cited
BSI
The product standard for bagged render and plaster, the one a monocouche, silicone or Tyrolean render should be declared to. Published 30 Nov 2016, Current, with Designated status for UKCA marking. Part 1 of the BS EN 998 series applies to factory made rendering and plastering mortars based on inorganic binders for external rendering and internal plastering on walls, ceilings, columns and partitions, and contains definitions, final performance requirements, the assessment and verification of constancy of performance regime and the marking requirements. The binder boundary is spelt out: a calcium sulphate binder may be used as an additional binder with air lime, and if air lime is the principal active binding component the mortar is covered here, but if calcium sulphate is the principal binder it falls under EN 13279 instead. Three exclusions matter on site: site-made rendering and plastering mortars are outside its scope and are covered by codes of application and national specifications; mortars with calcium sulphate as principal binder are excluded; and special fire-resistant and acoustic mortars, structural repair mortars, smoothing and trueing materials, paints, coatings, thin-layer organic renders and prefabricated units such as plasterboard are not dealt with.
Cited in Cladding and Render: The Complete UK Guide (2026), Render Types: Sand-Cement, Monocouche & Acrylic.
- strong RN-II5853 cited
BSI (British Standards Institution)
STATUS: WITHDRAWN on 10 December 2010. BS 8200:1985 was published 28 June 1985, ISBN 0 580 14352 X, committee B/209, ICS 91.040.01, and gave the code of practice for the design of non loadbearing external vertical enclosures, that is the building envelope, covering weathertightness, thermal performance, sound insulation, condensation control, joints and durability. It has no direct single replacement: its subject matter now sits across the Approved Documents (C for weather resistance, L for thermal, E for sound), BS 5250 for condensation control in buildings, and the cladding specific codes such as BS 8297 for precast concrete and the BS 8298 series for natural stone. A note citing BS 8200 for envelope design principles is quoting a standard withdrawn in 2010. Catalogue page confirms number, title, publication date, withdrawal date, ISBN, committee and scope.
- strong RN-PHNHDA cited
BSI (British Standards Institution)
The British Standard that tells a specifier what to actually write down when ordering timber cladding, and therefore the reference for what a quote should state. Published 31 Dec 2014 and Current. It describes ways to specify the characteristics of external timber cladding products, and is aimed at specifiers of external timber cladding components and at the manufacturers, suppliers and users of those components. It sits alongside BS EN 14915, which is the product standard: 14915 says what the board must be declared to, 8605-1 says how to ask for the one you want.
- strong RN-21YSR6 cited
BSI (British Standards Institution)
The product standard for EPS, the white bead board used for most external wall insulation systems and under many floor slabs. Published 28 Feb 2013, current but under review. It specifies requirements for factory made expanded polystyrene products with or without rigid or flexible facings or coatings used for the thermal insulation of buildings, made as boards, rolls or other preformed shapes including tapered, tongue and groove, shiplap and profiled, and notes the same products are used for sound insulation and in prefabricated systems and composite panels. It sets classes of dimensional tolerance for length, width, thickness, squareness and flatness, the EPS designation code, sampling and conditioning for thermal tests, and the Assessment and Verification of Constancy of Performance regime of type testing plus factory production control. Products with a declared thermal resistance below 0.25 m2K/W or a declared thermal conductivity above 0.060 W/mK at 10 degrees C are outside its scope, as are in situ products, building equipment and industrial insulation, civil engineering applications and beam and block floor systems.
Cited in Cavity Wall Insulation Materials Compared, EPS vs XPS Insulation: Which & Where, Floor Insulation Materials & Build-ups, Wall Insulation Materials: Cavity, Internal & External.
- strong RN-03453V cited
BSI (British Standards Institution)
The product standard for PIR and PUR boards, the rigid foil faced insulation sold under brand names such as Kingspan and Celotex. Published 28 Feb 2013, listed as Current with Designated status for UKCA marking. It specifies requirements for factory made rigid polyurethane foam products with or without facings or coatings used for the thermal insulation of buildings, made in board form, and the page states explicitly that PU includes both PIR and PUR products, which settles the common confusion about whether PIR has its own standard. It covers multi-layered PU insulation products, product characteristics, testing, evaluation of conformity, marking and labelling, dimensional tolerance classes for length, width, thickness, squareness and flatness, the designation code, and the AVCP regime of type testing plus factory production control. Products with a declared thermal resistance below 0.25 m2K/W or declared thermal conductivity above 0.060 W/mK at 10 degrees C are excluded, as are in situ insulation products and insulation of building equipment and industrial installations.
Cited in Floor Insulation Materials & Build-ups, PIR vs Mineral Wool Insulation Compared, Wall Insulation Materials: Cavity, Internal & External.
- strong RN-DJJNP5 cited
BSI (British Standards Institution)
STATUS: CURRENT (marked Under Review). BS EN 350:2016 was published 31 October 2016, identical to EN 350:2016, ISBN 978 0 580 87895 4, committee B/515. It replaced the two part BS EN 350-1:1994 (principles of testing and classification of natural durability) and BS EN 350-2:1994 (natural durability and treatability of selected European wood species), so a note citing BS EN 350-1 or BS EN 350-2 is citing superseded parts. It gives the methods for determining and classifying the durability of wood and wood based materials against biological wood destroying agents: wood decay fungi, beetles, termites and marine organisms, and it applies to individual wood species, batches, and processed materials including heat treated, preservative treated and modified wood. This is the standard behind the durability class rating quoted for cladding and decking species such as western red cedar, oak and larch. Catalogue page confirms number, title, date, status and scope; the species tables are paywalled.
- strong RN-JXXFKF cited
BSI (British Standards Institution)
STATUS: CURRENT. BS EN 492:2012+A2:2018 was published 30 June 2018 and supersedes BS EN 492:2012+A1:2016 and BS EN 492:2012. It sets the technical requirements and test methods for fibre cement slates and fittings used for roofing and for internal and external wall and ceiling finishes, applying to slates with a maximum height dimension of 850 mm and covering products reinforced with various fibre types. It specifies nominal dimensions, shapes and edge configurations and gives test methods for density, mechanical properties and water resistance (impermeability). Importantly for a note, it does NOT cover installation technique, design or wind uplift calculation: those sit in BS 5534, so a note should not cite BS EN 492 for fixing patterns. Catalogue page confirms number, title, date, status and scope; the requirement tables are paywalled.
Cited in Natural Slate vs Fibre-Cement Slate.
- strong RN-BNGAID cited
United Kingdom Accreditation Service
The live UKAS register of accredited bodies currently under sanction. It records the British Board of Agrement under imposed suspension from 26 February 2026 across all four of its accreditations: ISO/IEC 17065 product certification and ISO/IEC 17021 management systems under reference 0113, ISO/IEC 17020 inspection under 4345, and ISO/IEC 17025 testing under 0357. This is the page to check before repeating any advice that treats a BBA certificate as accredited third party assurance.
Cited in Breathable Membranes for Roofs & Walls, Brick Slips & Brick Cladding Systems, Cavity Wall Insulation Materials Compared, Damp Proof Membranes (DPM) & DPC: Types & Installation and 7 more.
- good RN-0YCUN4 cited
INCA (Insulated Render and Cladding Association)
INCA's page on how external wall insulation sits inside the PAS 2035 retrofit framework. It defines PAS 2035 as a Publicly Available Specification designed to provide a clear retrofit standards framework for the installation of energy efficiency measures, built to raise standards and consistency in both the design and the installation of those measures and to ensure they are appropriate for the property and will perform as expected. It points to PAS 2035/2030+A1 2022 as the applicable version, and it flags the point most often missed on an EWI retrofit: the requirements for air tightness testing and for ventilation measures that come with wrapping a house. It also links the Retrofit Academy guide PAS 2035 Ventilation for Domestic Retrofit. Use it to explain why a grant funded EWI job carries assessment and ventilation obligations that a straight private render job does not.
- supplier figure RN-Y69Y7T cited
Cedral (Etex)
The fixing guide Cedral publishes for its own fibre cement facade boards. It sets the ventilated cavity depth, batten size and spacing the manufacturer requires behind lapped planks.
Cited in Fibre Cement Cladding & Boards Explained.
- very strong RN-6PSUIL
Department of Finance, Northern Ireland (Building Control NI)
The Northern Ireland U-value standards, which differ from England's Approved Document L and are the figures to quote for an NI reader. Table 2.2 gives limiting U-values for new dwellings in W/m2K as area-weighted averages: wall 0.18, floor 0.18, roof 0.16, party wall 0.00, and windows, roof windows, glazed rooflights, curtain walling and pedestrian doors 1.40. Column (b) sets the maximum U-value at any point: 0.60 for wall, floor and party wall, 0.30 for roof and 3.00 for windows and doors. Where space heating is underfloor heating the maximum floor U-value tightens to 0.15 W/m2K, and that 0.15 still applies even under the whole-building trade-off route in paragraph 2.44. Table 3.2, for new thermal elements in existing dwellings, gives wall 0.28, pitched roof with insulation at ceiling level 0.16, pitched roof with insulation at rafter level 0.18, flat roof or roof with integral insulation 0.18, floor 0.22 and swimming pool basin 0.25. Maximum permissible air permeability is 10 m3/(h.m2) at 50 Pa, with 5 or less expected in practice, and below 3 the booklet says alternatives to natural ventilation should be considered. Roof window and rooflight U-values are quoted as assessed in the vertical position and must be adjusted in accordance with BR 443 where assessed in another plane. Regulation 43 requires that where renovation of a thermal element amounts to more than 50 per cent of its surface area, the whole element is brought up to standard.
- very strong RN-MMEX1T
Historic Environment Scotland
A free public-body technical guide on damp in traditional buildings, and the accessible route to heritage-grade damp advice because Historic England blocks scripted fetches. Published 1 July 2007 by Historic Environment Scotland, publication type Technical, Advice and Guidance, INFORM Guide, audiences Planners and Owners and Conservation and Heritage enthusiasts, subjects Architecture and Climate Change, downloadable as a 288 KB PDF from the page. Scope stated on the page: recognising the causes and early signs of damp, and guidance on rectifying damp problems. Use it as the counterweight to damp-proofing sales literature, since HES guidance for solid-walled traditional buildings does not start from the chemical injected damp proof course assumption that dominates UK damp articles. Note the jurisdiction: it is Scottish guidance, so the building science transfers but any regulatory reference does not.
- very strong RN-HIUMHY
Historic Environment Scotland
The public-body source for why cement mortar on a traditional stone or soft brick wall causes decay, published 13 October 2016 by Historic Scotland (now HES), INFORM Guide, 377 KB PDF. Scope stated on the page: it focuses on the two commonly used mortar types, lime mortars and cement mortars, gives an overview of the physical properties of both, and indicates their technical suitability for use with traditional stone masonry, on the basis that selecting a suitable mortar for repair works matters for conservation and for PREVENTING MASONRY DECAY ASSOCIATED WITH THE USE OF INCOMPATIBLE MATERIALS. Pair it with the HES Short Guide: Lime Mortars in traditional buildings (1 March 2013, 2.16 MB PDF), which covers the history and use of lime mortars, sourcing of raw materials, preparation of mortars for repairs and how to recognise and reduce the risk of failure, and with the INFORM Guide: Hot-Mixed Lime Mortars (1 April 2015, 4.41 MB PDF), which explains how hot-mixed lime mortars differ from other lime mortars and how they are prepared on site.
- very strong RN-YD9RWJ
Ministry of Housing, Communities and Local Government
Section 10 covers resisting fire spread over external walls, with the sub-sections Combustibility of external walls, Balconies, Metal composite materials, and the guidance on regulation 7(2) and requirement B4. Paragraph 10.3 requires the external walls of buildings other than those described in regulation 7(4) to either follow paragraphs 10.5 to 10.9 on external surfaces and cavities, or meet the alternative route. The 2022 amendments made consequential changes following the Building (Amendment) (England) Regulations 2022 and updated Section 10 for residential buildings in purpose groups 1 and 2 with a storey 11m or more in height, and added recommendations for secure information boxes in blocks of flats with storeys over 11m and evacuation alert systems where storeys are over 18m. The 2020 amendments cut the sprinkler trigger height in blocks of flats from 30m to 11m and added wayfinding signage above 11m.
- very strong RN-GWUUOR
Ministry of Housing, Communities and Local Government
The landing page for Approved Document L, Conservation of fuel and power. Volume 1: Dwellings, 2021 edition incorporating 2023 amendments, took effect 15 June 2022, with transitional cover where a building notice or initial notice was given or full plans deposited before 15 June 2022 and the work started before 15 June 2023. A 2026 edition, retitled Approved Document L: Energy and greenhouse gas emissions, Volume 1: Dwellings, is published on the same page alongside Volume 2 for buildings other than dwellings. Volume 1 was last updated 2 February 2023 and the 2023 amendment removed the primary energy factor as a performance standard for district heat networks and community heating.
- very strong RN-8Y875H
Ministry of Housing, Communities and Local Government
The list of test standards common across product families that UK approved bodies use when assessing construction products, published 27 January 2021 and last updated 21 May 2025, in force from 1 January 2021. Names the specific test methods behind fire performance claims a product data sheet will quote, so a note can verify what a rating actually measures: TS 1187 external fire exposure to roofs; EN ISO 1182 non-combustibility test; EN ISO 1716 gross heat of combustion or calorific value; EN 13823 the single burning item test for building products excluding floorings; EN ISO 11925-2 ignitability under direct flame impingement, the single-flame source test; EN ISO 9239-1 burning behaviour of floorings using a radiant heat source; EN 1365-3 and EN 1365-4 fire resistance of loadbearing beams and columns; EN 1634-1 and EN 1634-3 fire resistance and smoke control for door and shutter assemblies and openable windows; and the EN and ENV 13381 series for applied protection to composite, hollow steel, timber and steel structural members. The latest versions of the standards themselves are on the BSI website.
- very strong RN-FSY9SH
Office for Product Safety and Standards
The searchable national database a reader can use to check whether a specific building product, appliance or tool has been recalled or flagged, run by the Office for Product Safety and Standards. Holds 3,692 reports at the date checked, filterable by alert type (product safety alert, product safety report, product recall), risk level (serious, high, medium, low, not provided), product category, measure type and date. Relevant product categories for renovation work include Construction products, Gas appliances and components, Electrical appliances and equipment, Lighting equipment, Adaptors, plugs and sockets, Hand tools, Machinery, Lifts, Pressure equipment and vessels, Furniture and Personal protective equipment. Measure types range from warning consumers of the risks and marking the product with warnings, through modification programmes and withdrawal from the market, to recall from end users, destruction of the product, import rejected at border and removal of the listing by the online marketplace. Entries carry a reference number and date, for example Sophie Allport Doorstops and Draught Excluders (2608-0008) recalled 13 August 2026.
- strong RN-04DH6J
BBA (British Board of Agrement)
The certification body whose Agrement Certificate is what a note usually means when it says a system is approved, and the page that lists which schemes it actually runs. The BBA's certification team issues certificates for the BBA Agrement, HAPAS (Highways Authority Product Approval Services), European Technical Assessment (ETA), and the Microgeneration Certification Scheme. Alongside product certification it runs certification of people, including the BBA Approved Installer Scheme, the BBA Competent Person Scheme, the BBA Gas Membrane Approved Installer Scheme, TrustMark registration and the BBA PAS 2030 Scheme, plus a Client Managed Inspection Service. Its testing services are also available standalone and include durability, mechanical, physical and structural, weather resistance and wind serviceability, conformance and fit-for-purpose, thermal performance, and onsite testing and trials. An Agrement Certificate is the route by which a product without a harmonised European product standard, such as a tanking membrane, a multifoil or a proprietary EWI system, gets an independently assessed statement of fitness for a stated use.
- strong RN-8QIL1K
BSI
The harmonised product standard for solid timber cladding, which is what a UKCA or CE marked cladding board is declared against. Published 30 Jun 2020, Current, with Designated status for UKCA marking. Its scope defines and specifies the relevant characteristics and the appropriate test methods for solid wood products used as panelling and cladding, including siding, for wall and ceiling panelling for internal use and wall and ceiling cladding for external uses. Because it is the harmonised standard, a cladding board sold without a declaration of performance against it, including thermally modified boards sold as Thermowood, is not being marketed on the same basis as one that is.
- strong RN-E6EZEI
BSI (British Standards Institution)
The standard the conservation trade works to, and the one a listed-building or period-property note should name. BS 7913 is paywalled, so only the BSI catalogue page is public; it confirms the current edition is BS 7913:2013, published 31 December 2013, status Current, ISBN 978 0 580 75778 5, prepared by BSI committee B/560 and classified under ICS 91.040.99. The catalogue page states this is the SECOND edition, updated to align with current best practice, and that the standard describes best practice in the management and treatment of historic buildings, applying to historic buildings both WITH and WITHOUT statutory protection, which is the point most renovation articles miss when they treat conservation guidance as relevant only to listed buildings. Its named audience includes owners, users, occupiers and managers of historic buildings, architects, engineers, surveyors, building managers, conservators, planners and local authority building control officers. The listed descriptors show its coverage: conservation, legislation, maintenance, fire safety in buildings, costs, hazard prevention, inspection, repair, building maintenance, design, renovation, building specifications, contracts and records.
- strong RN-LTB81Q
BSI (British Standards Institution)
STATUS: CURRENT (marked Under Review). BS 8297:2017 was published 31 October 2017 and supersedes BS 8297:2000, which is withdrawn, and BS 8297:1995; note the title also changed, from Code of practice for design and installation of non-loadbearing precast concrete cladding to Design, manufacture and installation of architectural precast concrete cladding, so a note using the old title is quoting a superseded edition. It gives recommendations for architectural precast concrete units used as building cladding, as decorative elements or as permanent formwork, that is units supported by and fixed to a structural frame or wall to perform a cladding role, with particular attention to permanent and temporary movements and tolerances of the supporting structure and to verification of product quality. It excludes glass fibre reinforced concrete (GRC), small masonry units and the design of the supporting structure itself. Catalogue page confirms number, title, date, status, supersession and scope.
- strong RN-4ZB4TM
BSI (British Standards Institution)
The code of practice for stone cladding fixed back mechanically, which is the reference point when comparing a genuine stone facade with brick slips or a stone effect render. Published 31 Dec 2020 and Current. Part 2 gives recommendations for the design, installation and maintenance of traditional handset external cladding of natural stone held directly to a structural backing by metal fixings, covering the sampling of stone for testing and production control testing, the provisions needed for the cladding to perform satisfactorily, the materials and methods most frequently used for stonework, and the use of thermal insulation behind external cladding. Its exclusions define the boundary with other systems: loadbearing masonry, cladding held only by adhesion, and any cladding supported or held around the perimeter by metal framing such as a rainscreen are all outside it, as are seismic loading and enhanced security scenarios such as blast. The general principles are noted as applying also to soffits and sloping surfaces.
- strong RN-EW8H75
BSI (British Standards Institution)
The large-scale fire test that an external wall insulation or rainscreen system is put through when the route to compliance is a full system test rather than an A2 or A1 Euroclass on every component. Published 30 Apr 2020 and Current, superseding BS 8414-1:2015+A1:2017. Part 1 provides the test method for determining the fire performance characteristics of non-loadbearing external cladding systems, rainscreen over-cladding systems and external wall insulation systems fixed to and supported by a masonry substrate and exposed to an external fire under controlled conditions, recording fire propagation upwards, penetration through the system, falling debris and the extent of damage. Its stated exclusions matter when reading a manufacturer's test claim: it does not cover the performance of glass or its supporting frame for glazed window openings, the total configuration of a construction incorporating additional windows, doors, balconies or ancillary penetrations, or exposure to radiant heat from a fire in an adjacent building. Part 2 is the equivalent test on a structural steel frame.
- strong RN-BSRQDB
BSI (British Standards Institution)
The standard that governs how far a BS 8414 test result can be stretched to cover a system that is not identical to the one tested, which is the question behind most cladding compliance disputes. Published 30 Sep 2019 and Current. It specifies the procedures and rules used to evaluate variations and changes to products and systems tested to BS 8414-1:2015+A1:2017 or BS 8414-2:2015+A1:2017, and defines the options and limits for preparing reports on direct and extended application criteria. The systems covered are rainscreens, external thermal insulated composite systems (ETICS) and self-supporting double skin metal faced insulating sandwich panels. It expressly does not cover the performance of systems that include glazed elements, infill panels or external insulation finishing systems (EIFS), nor systems tested to BS EN 1364. A note explaining why a supplier's test certificate may not cover the exact build-up on a given house can cite this directly.
- strong RN-PPABEN
BSI (British Standards Institution)
The product standard for fibre cement cladding boards, planks and shingles, the material sold under names such as Cedral and HardiePlank. Published 30 Jun 2018, Current, with Designated status for UKCA marking. Its scope specifies the technical requirements and establishes methods of inspection and test as well as acceptance conditions for fibre-cement flat sheets, siding shingles and planks for internal wall and ceiling finishes and for external wall and ceiling finishes. It is the standard to cite when distinguishing genuine fibre cement, which is a mineral board with an A2 or better reaction to fire potential, from wood-plastic composite cladding, which has no equivalent harmonised standard of this kind.
- strong RN-PFR673
BSI (British Standards Institution)
STATUS: CURRENT. BS EN 12588:2006 was published 31 January 2007, is identical to EN 12588:2006, and supersedes BS EN 12588:1999, which is withdrawn. It specifies the designation, chemical composition requirements, surface condition and dimensional tolerances for rolled lead sheet produced by roll deformation, for roofing, flashings, weatherings, cladding, pre formed panels, damp proof courses and similar building uses, and it includes the colour codes for thickness that give the familiar Code 3 to Code 8 lead sheet designations. Two changes from the 1999 edition are worth citing: the maximum tin content was raised from 0.005 per cent to 0.05 per cent to improve corrosion resistance, and manual handling guidance was added because of the weight of the product, along with recycling recommendations noting a documented recycling rate above 90 per cent. Catalogue page confirms number, title, date, status, supersession, scope and those changes.
- strong RN-S7TZDR
BSI (British Standards Institution)
STATUS: CURRENT (marked Under Review). BS EN 1304:2013 was published 30 June 2013 and is the harmonised product standard for clay roofing tiles and fittings used in pitched roof coverings and in vertical wall cladding and lining, superseding BS EN 1304:2005. It specifies structural characteristics, geometric properties, physical and mechanical characteristics, and gives the marking and evaluation of conformity requirements, so it is the standard a clay tile is CE or UKCA marked against. It sits alongside BS EN 490 for concrete tiles, BS EN 492 for fibre cement slates and BS EN 12326 for natural slate, with the test methods for clay tiles in the BS EN 539 series and installation in BS 5534. Catalogue page confirms number, title, date, status and scope; the requirement tables are paywalled.
- strong RN-TRC3IR
BSI (British Standards Institution)
The product standard for wall breather membranes, the sheet that sits behind timber, fibre cement or rainscreen cladding. Published 31 May 2014 and Current. Part 2 of the BS EN 13859 series specifies the characteristics of flexible sheets used as underlays for walls, that is behind outside wall coverings, in order to avoid the penetration of wind and water from outside. It is the wall counterpart to Part 1, which covers underlays for discontinuous roofing, so a note distinguishing a roofing breather membrane from a wall breather membrane can cite one part each rather than treating them as interchangeable products.