References

Roofing Materials

208 sources in the library on roofing materials. 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 5 of 6.

1. supplier figure RN-788O31

   SOPREMA UK (Celotex)

   Thin PIR insulation board with aluminium foil facings, boards 2400 x 1200 mm. Declared thermal conductivity (lambda D) 0.022 W/mK. Thickness range 20 mm to 40 mm. Compressive strength 120 kPa. BBA Certificate 25/7318 covers pitched roof, dry lining and floor insulation. Fire: SOPRATHERM TB4000 achieves a reaction to fire classification of Euroclass F in accordance with BS EN 13501-1.

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2. supplier figure RN-AHY1GO

   SOPREMA UK (Celotex)

   Thick PIR insulation board with aluminium foil facings, boards 2400 x 1200 mm. Declared thermal conductivity (lambda D) 0.022 W/mK. Thickness range 110 mm to 200 mm. Compressive strength 140 kPa. BBA Certificate 25/7318 covers pitched roof, dry lining and floor insulation. Fire: SOPRATHERM XR4000 achieves a reaction to fire classification of Euroclass F in accordance with BS EN 13501-1.

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3. supplier figure RN-K15VG3

   STEICO

   STEICOjoist is an I-joist to European Technical Approval ETA-20/0995 for floor joists, rafters or wall studs, with a natural wood fibreboard web 39 mm thick and laminated veneer lumber STEICO LVL R flanges. Three flange widths: SJ 45 in heights 160, 200, 220, 240, 300, 360 and 400 mm at 43 pieces per package; SJ 60 in heights 160 to 500 mm at 33 per package; SJ 90 in heights 220 to 500 mm at 23 per package. Heights range 160 mm to 500 mm overall. Every I-joist is also available with a factory pre-insulated web, which gives a uniform rectangular cross section so STEICOflex batts fit without cutting. STEICO LVL is built from 3 mm graded veneers, CE certified and manufactured to EN 14374: LVL R has all veneers longitudinal, LVL X has about one fifth crosswise. The system is certified by the Passive House Institute.

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4. supplier figure RN-0LR8HS

   STEICO

   Characteristic strength and stiffness in N/mm2. STEICO LVL R: bending edgewise parallel fm,0,edge,k 44 at 300 mm depth with size effect s = 0.15, flatwise parallel 50, tension parallel ft,0,k 36, tension perpendicular edgewise 0.9, compression parallel fc,0,k 40, compression perpendicular edgewise 7.5. STEICO LVL X at 24 mm or less: bending edgewise 30, perpendicular edgewise 10, flatwise 32; at 27 mm and above 32, 8 and 36. Span tables to BS EN 1995-1-1 for maximum single clear span in metres at final deflection L/250 and fundamental frequency above 8 Hz, live load 1.5 kN/m2: SJL 45 at 240 mm deep spans 4.785 m at 300 mm centres and 4.240 m at 600 mm centres with a 0.75 kN/m2 dead load; SJL 60 at 400 mm deep spans 6.850 m at 300 centres and 6.120 m at 600; SJL 90 at 400 mm deep spans 7.495 m at 300 centres and 6.685 m at 600. Floor tables are service class 1, roof tables service class 2, and double-span tables follow.

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5. supplier figure RN-3O5V57

   STEICO

   Rigid wood fibre underlay and sheathing board to EN 13171. Board designations: 40 mm WF - EN 13171 - T5 - WS1,0 - CS(10\Y)200 - DS(70,90)3 - TR30; 60 to 100 mm CS(10\Y)100 - DS(70,-)2 - TR10; 120 to 240 mm CS(10\Y)50 - TR10. Declared thermal conductivity 0.043 W/(mK) at 40 mm and 0.040 W/(mK) at 60 to 80 mm. Density 180 kg/m3 at 40 mm and 140 kg/m3 at 60 to 80 mm. Declared thermal resistance (m2K/W): 0.90 (40 mm), 1.50 (60), 2.00 (80), 2.50 (100), 3.20 (120), 3.75 (140), 4.30 (160), 4.85 (180), 5.40 (200), 5.95 (220), 6.48 (240). sd 0.28 m at 40 mm to 1.68 m at 240 mm. Compressive strength at 10% compression 0.2 N/mm2 (200 kPa) at 40 mm and 0.1 N/mm2 (100 kPa) at 60 to 80 mm. Resistance to water penetration W1, outdoor exposure 8 weeks, short term water absorption 1.0 kg/m2 or less, processing temperature 5 C or above. Suitable as a roof soffit panel from 5 degrees pitch, tile roofing from above 10 degrees. Fire class (RTF) according to EN 13501-1: E.

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6. supplier figure RN-009TEM

   STEICO

   Rigid wood fibre sarking and sheathing board to EN 13171 and EN 14964, designation WF - EN 13171 - AFr100 - T5 - WS1,0 - MU5 - CS(10\Y)200 - DS(70,-)2 - TR30, EN-14964-IL. Declared thermal conductivity 0.048 W/(mK). Density 270 kg/m3. Water vapour diffusion resistance factor mu 5; sd 0.11 m at 22 mm, 0.18 m at 35 mm, 0.30 m at 60 mm. Declared thermal resistance 0.45 (22 mm), 0.70 (35 mm), 1.25 (60 mm) m2K/W. Compressive strength at 10% compression 0.20 N/mm2, that is greater than or equal to 200 kPa; tensile strength perpendicular to face greater than or equal to 30 kPa. Short term water absorption less than or equal to 1.0 kg/m2, outdoor exposure 4 weeks, suitable from a roof pitch of 14 degrees or more. Specific heat capacity 2100 J/(kgK). Fire class (RTF) according to EN 13501-1: E.

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7. supplier figure RN-OOMKQ5

   STEICO

   Flexible wood fibre batt to EN 13171, board designation WF - EN 13171 - T3 - TR1 - AFr5 - MU 2. Declared thermal conductivity 0.036 W/(mK). Density 50 kg/m3. Water vapour diffusion resistance factor mu 2. Specific heat capacity 2100 J/(kgK). Declared airflow resistance greater than or equal to 5 (kPa s)/m2. Declared thermal resistance (m2K/W) by thickness in mm: 0.80 (30), 1.10 (40), 1.35 (50), 1.65 (60), 2.20 (80), 2.75 (100), 3.30 (120), 3.85 (140), 4.40 (160), 5.00 (180), 5.55 (200), 6.10 (220), 6.65 (240). sd values 0.06 m at 30 mm rising to 0.48 m at 240 mm. Ingredients wood fibres, polyolefin fibres, ammonium sulfate; biogenic carbon approximately 82 kg CO2eq/m3. Fire class (RTF) according to EN 13501-1: E.

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8. supplier figure RN-QTEFLN

   Sunsquare Ltd

   Sunsquare Aero Electric Roof Access rooflight, which opens fully to 90 degrees for roof access under wall switch control, with a laminated pane. Published U-values are as low as 1.18 W/m2K for the access unit as standard, with glazing upgrades taking the range down to 0.5 W/m2K. Non-fragile glazing.

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9. supplier figure RN-VGXB4A

   Sunsquare Ltd

   Sunsquare Aero electric skylight. U-values as low as 0.5 W/m2K with standard high performance glazing (non-fragile glass with laminated inner pane). Upgraded 29.5mm insulating glass unit: 6mm clear toughened soft coat low-E outer pane, 12mm black warm edge spacer bar, 11.5mm clear laminated heat-strengthened inner pane. CU.in glazing using suspended-film technology reaches U-values around 0.4 W/m2K in a slim lightweight unit; triple glazing is also offered. Made to order in standard and bespoke sizes.

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10. supplier figure RN-TQ48SK

    Sunsquare Ltd

    Sunsquare skylight range, made in Bury St Edmunds. SkyView rooflight: U-values as low as 0.5 W/m2K, non-fragile glazing tested to ACR[M]001:2014, electric ventilation options; a fire-rated SkyView with CERTIFIRE certification is also offered. Horizon external walk-on glass roof panels for terraces: load capacities up to 5.0 kN/m2 uniformly distributed and 4.5 kN concentrated, U-value 0.94 W/m2K. Internal walk-on floorlights: anti-slip glass to British standards for wet areas, U-values as low as 0.5 W/m2K, 99% UV filtering. Pyramid multi-pane roof lantern: from GBP 1,198 excluding VAT, standard sizes from 800 x 800mm, slim aluminium frame, U-values as low as 0.5 W/m2K, 10 year frame warranty, optional self-cleaning glass. Aero electric roof access rooflight opens fully to 90 degrees; Aero Pyramid opens to 30 degrees.

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11. supplier figure RN-HG2CBY

    Superglass (Etex)

    Non combustible glass mineral wool roll supplied 1200 mm wide to suit common rail and bracket systems. Declared thermal conductivity (lambda) 0.032 W/mK. Fire classification Euroclass A1 when tested to EN 13501-1:2018 Reaction to Fire. CCPI Assessment Mark certificate 005800128/0227. For walls and roofs of twin skin profiled metal clad systems and portable and modular buildings.

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12. supplier figure RN-GC70RS

    Superglass (Etex)

    Non combustible glass mineral wool loft roll, partially perforated so it can be laid between standard joist spacings or as a full width layer over the joists. Declared thermal conductivity (lambda) 0.044 W/mK. Fire classification: deemed non combustible with a fire classification of Euroclass A1 when tested to EN 13501-1:2018 Reaction to Fire. Holds CCPI Assessment Mark, certificate number 005800129/0227. Intended for new and existing cold pitched roofs and lofts.

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13. supplier figure RN-NEMR6H

    Superglass (Etex)

    Non combustible glass mineral wool roll cut at 2 x 570 mm widths to friction fit between common stud and rafter spacings. Declared thermal conductivity (lambda) 0.032 W/mK. Fire classification: Euroclass A1 when tested to EN 13501-1:2018 Reaction to Fire. CCPI Assessment Mark certificate 005800130/0227. Intended for external timber frame walls, warm pitched roofs and suspended timber floors.

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14. supplier figure RN-6TAMOI

    Superglass (Etex)

    Non combustible glass mineral wool roll for external timber frame walls, warm pitched roofs and suspended timber floors. Declared thermal conductivity (lambda) 0.035 W/mK. Fire classification Euroclass A1 when tested to EN 13501-1:2018 Reaction to Fire. CCPI Assessment Mark certificate 005800130/0227.

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15. supplier figure RN-KT3XMD

    Swisspearl (formerly Cembrit)

    Swisspearl Jutland fibre cement slate, formerly branded Cembrit. Flat square-edged slate, 4mm thick, available 600 x 300mm and 600 x 600mm, smooth surface with straight edges, supplied pre-holed. Made from Portland cement with a non-asbestos blend of synthetic and cellulose fibres, fully compressed and pigmented through, with a semi-matt acrylic coating to the top face and edges and a tinted high performance binder to the back. Conforms to class B strength, the highest classification for fibre cement slates, manufactured to EN 492. Fixing is two 2.65 x 30mm copper nails per slate plus a copper disc rivet at the tail bent down through 90 degrees.

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16. supplier figure RN-HJRKJO

    Swisspearl (formerly Cembrit)

    Swisspearl B5 fibre cement corrugated roofing sheet, the modern replacement for 3 inch corrugated sheets on older garages and equine buildings. Sheet thickness 6mm, cover width 1020mm, average weight 11.7 kg/m2. Twelve lengths from 4 ft 6 in to 10 ft 6 in, with matching translucent sheets for daylight. Available uncoated natural grey or in 6 colours using a 3-part painting process. Ridges, bargeboards, finials, fixings and eaves fillers complete the range.

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17. supplier figure RN-B7B38R

    Swisspearl (formerly Cembrit)

    Swisspearl B7 fibre cement corrugated roofing sheet: 6mm thick, 1150mm wide, in FS, CO, HO and PCO variants, average weight 13.4 kg/m2, noticeably heavier per square metre than the smaller-profile B5 at 11.7 kg/m2. Usable as roofing or as part of a ventilated facade, with reinforcement strips, mitred corners and pre-punched holes available on some types.

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18. supplier figure RN-G11A2A

    Swisspearl (formerly Cembrit)

    Swisspearl Cemsix corrugated fibre cement sheet: 6mm thick, 1086mm width, multiple lengths, available in natural grey or 4 colours from a 3-part colouring process (7 colours quoted for the coated range). The whole Swisspearl system is covered by BBA Agrement Certificate 03/4049 and is guaranteed for 30 years durability and 10 years colour stability.

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19. supplier figure RN-5OQH2D

    Swisspearl (formerly Cembrit)

    Swisspearl Moorland fibre cement slate: smooth surface with dressed edges, rectangular, 4mm thick, sizes 600 x 300mm and 600 x 600mm. Portland cement with a non-asbestos synthetic and cellulose fibre formulation, fully compressed, pigmented through production, semi-matt acrylic coloured coating to top face and edges and a tinted or transparent high performance binder to the back face. Fixed with two 2.65 x 30mm copper nails plus a copper disc rivet at the tail bent to 90 degrees. The dressed edge distinguishes it from the square-edged Jutland at the same 4mm thickness.

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20. supplier figure RN-Y7524Z

    Swisspearl (formerly Cembrit)

    Swisspearl Westerland fibre cement roof slate: textured (riven) surface with dressed edges, rectangular and square formats, 4mm thick, sizes 600 x 300mm, 600 x 600mm, 500 x 242mm and 500 x 492mm. Lightweight and pre-holed, cuts with hand tools without nuisance dust, and needs no grading or sorting on site unlike natural slate.

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21. supplier figure RN-TOS2R5

    Thermafleece (Eden Renewable Innovations Ltd)

    High density sheep wool rich insulation slab, 75% wool with recycled fibres, 20 to 25% recycled content. Density 31 kg/m3. Thermal conductivity 0.035 W/mK. Slabs 1200 mm long in 390 and 590 mm widths, thicknesses 50, 70 and 90 mm with a plus or minus 5 mm tolerance. Published thermal resistance (m2K/W): 50 mm 1.43, 70 mm 2.00, 100 mm 2.86, 140 mm 4.00, 190 mm 5.43, 240 mm 6.86. Fire Classification EuroClass E; flammability and smoulder resistance to BS 5803-4 pass. Vapour resistivity 9 MNs/gm. Specific heat capacity 1800 J/kgK. Water absorption at 100% RH 24% w/w. Sound reduction Rw 41 dB, NRC 1.10 at 90 mm. Dimensional stability to EN 1604 pass, EPD registration S-P-04468. Cradle to gate A1-A3 carbon 0.05 kg CO2e per functional unit. Thermafleece states UltraWool is not suitable for use as a cavity barrier.

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22. supplier figure RN-MBGE96

    Unilin Insulation (formerly Xtratherm)

    Width variable pitched roof board with composite foil facers both sides, 1200 x 370 mm, thicknesses 100, 125 and 150 mm. Thermal conductivity 0.023 W/mK. Reaction to fire: Euroclass F. Typical roof U-values to EN ISO 6946 for an unvented sloped roof with rafters at 400 mm centres and a 25 mm void, combined with an under rafter layer: Rafterloc 100 mm gives 0.20 with 30 mm under, 0.18 with 40 mm, 0.16 with 50 mm, 0.15 with 60 mm, 0.14 with 70 mm; 125 mm gives 0.17 to 0.13; 150 mm gives 0.15 to 0.12 W/m2K. An approved vapour permeable membrane is required.

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23. supplier figure RN-BCR1ZD

    Unilin Insulation (formerly Xtratherm)

    PIR roof board with composite foil facings both sides, 2400 x 1200 mm. Thicknesses 25, 30, 40, 50, 60, 70, 75, 80, 90, 100, 125 and 150 mm. Thermal conductivity 0.022 W/mK. Compressive strength CS(10Y) 140 kPa. Reaction to fire: Euroclass F. Covered by BBA 23/6997 (2026).

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24. supplier figure RN-4JG775

    VELUX Company Ltd

    VELUX centre-pivot and top-hung roof windows, glazing options quoted as whole-window Uw (not centre-pane Ug). Glazing 70 Comfort double glazed: Uw 1.3 W/(m2K), g-value 0.46, 35 dB sound insulation. Glazing 68 Better Comfort triple glazed: Uw 1.1 W/(m2K), g-value 0.49, 35 dB. Glazing 62 Comfort extra noise reduction triple glazed: Uw 0.92-0.96 W/(m2K), g-value 0.47, 42 dB. Suitable roof pitches 15-90 degrees for centre-pivot, top-operated and solar/electric versions; 15-65 degrees for the electric top-hung outward opening version and 15-55 degrees for the manual top-hung. All glazing includes rain noise reduction, safety laminated inner pane, toughened outer pane and a UV filter.

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25. supplier figure RN-0Z8QTL

    VELUX Company Ltd

    VELUX curved glass rooflight: Urc,ref300 of 0.55 W/(m2K), the whole rooflight including a 300mm reference upstand, declared for the fixed variant with three-layer glazing at 1.2 x 1.2m with a 300mm curb to EN 1873:2014+A1:2016, Arc,ref300 = 4.4 m2. The curved glass top sheds rainwater on roof pitches down to 0 degrees. Base unit double or triple insulating glass with laminated inner pane P4A; sound insulation 42 dB with triple glazing; burglary resistance class 2 as standard.

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26. supplier figure RN-42SD0Z

    VELUX Company Ltd

    VELUX dome with glazing, for roof pitches 0-15 degrees: U-value 0.80 W/(m2K) declared for the fixed anti-burglary variant with a 2-layer glazing unit, calculated at window size 1.2 x 1.2m with a 300mm curb to EN 1873:2014+A1:2016, A = 3.4 m2. Sound insulation 36 dB. Note this is the assembly figure including the upstand, not a centre-pane value.

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27. supplier figure RN-MJX4Y8

    VELUX Company Ltd

    VELUX flat glass rooflight: energy performance is quoted as Urc,ref300 of 0.60 W/(m2K), which is the whole rooflight including a 300mm reference upstand, not a centre-pane Ug and not a bare unit U-value. The declared figure is for the fixed variant with a three-layer glazing unit, at a window size of 1.2 x 1.2m with a 300mm curb, calculated to EN 1873:2014+A1:2016, with Arc,ref300 = 4.1 m2. Top unit is toughened glass, base unit a double or triple insulating glass unit with laminated inner pane to class P4A. Sound insulation up to 42 dB (curved variant, triple glazed). Supplied burglary resistant as standard to resistance class 2. VELUX recommends rooflight area of at least 10% of room floor area to meet EN 17037 (300 lux for 50% of the year over 50% of the room), rising to 15-20% where the window is overshadowed.

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28. supplier figure RN-E8DFE5

    VELUX Company Ltd

    VELUX sun tunnel for flat roofs, available only in 14 inch / 35cm diameter. Rigid version: recommended tunnel length 0.9m to 6m, with up to 98% daylight reflectivity from the super high reflective coating; the ZTR extension tunnel is recommended where the ceiling-to-roof distance exceeds 170cm, taking total length to 600cm. Flexible version: recommended tunnel length for a flat roof is 0.2m to 0.9m only. The integrated cover frame suits flat and profiled roof coverings up to 12cm high but not standing seam metal. Ventilation adapter (TWR 0K14 only) has a 10cm pipe connection.

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29. supplier figure RN-6HYJNY

    VELUX Company Ltd

    VELUX sun tunnel for pitched roofs. Rigid tunnel: 25cm and 35cm diameters, recommended tunnel length 0.9-6m, highly reflective coating giving up to 98% daylight reflectivity; extension tunnel ZTR is recommended where ceiling-to-roof distance exceeds 170cm, taking total length to 600cm. Flexible tunnel: 35cm diameter only, recommended length 1.5m, for use where a beam or other obstruction blocks a straight run. Integrated cover frame suits flat and profiled roof coverings up to 12cm high; not suitable for standing seam metal roofing. Optional low U-value kit ZTB. Ventilation adapter (TWR 0K14 only) has a 10cm pipe connection.

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30. supplier figure RN-UUO6RP

    Welsh Slate Ltd

    Cwt-y-Bugail Welsh Slate, quarried east of Blaenau Ffestiniog since 1840 from Ordovician beds, a dark blue-grey slate with occasional white veins, riven texture and distinctive relic bedding. Three thickness grades: Capital 5.5mm, County 7mm, Celtic 9mm. Core production sizes 500 x 250mm, 400 x 250mm and 300 x 200mm (note the 500 x 250mm core size, where Penrhyn and Ffestiniog use 500 x 300mm).

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31. supplier figure RN-393IQI

    Welsh Slate Ltd

    Ffestiniog Welsh Slate, a thin uniform slate with less texture than the nearby Cwt-y-Bugail quarry. Three thickness grades: Capital 5.5mm, County 7mm, Celtic 9mm. Core production sizes 500 x 300mm, 400 x 250mm and 300 x 200mm, with production possible in excess of 1 metre length.

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32. supplier figure RN-1G1BWN

    Welsh Slate Ltd

    Penrhyn Welsh Slate from Penrhyn Quarry, Bethesda. Supplied in three thickness grades: Capital 5.5mm (thinnest production), County 7mm (the main production thickness) and Celtic 9mm. Core production sizes are 500 x 300mm, 400 x 250mm and 300 x 200mm, although the stone can produce slates over 1 metre long.

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33. supplier figure RN-JZY712

    Welsh Slate Ltd

    Welsh Slate coverage, slates per m2 by nominal size and headlap. At 50mm lap: 600 x 350mm 10.2/m2, 600 x 300mm 11.9, 550 x 300mm 13.1, 500 x 300mm 14.6, 455 x 250mm 19.4, 400 x 250mm 22.4, 400 x 200mm 27.9, 350 x 200mm 32.5, 300 x 200mm 39.0. At 100mm lap the same sizes need 11.3, 13.1, 14.6, 16.4, 22.1, 26.1, 32.5, 39.0 and 46.5 slates per m2 respectively, so increasing lap from 50mm to 100mm adds roughly 10-20% to the slate count. The largest 600 x 350mm slate at a 150mm lap needs 12.5 slates/m2.

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34. supplier figure RN-PB5VDM

    Welsh Slate Ltd

    Welsh Slate minimum headlap tables to BS 5534, split by driving rain exposure. Moderate exposure (less than 56.5 l/m2 per spell): a 600 x 350mm slate needs 115mm headlap at 22.5 degrees, 105mm at 25, 95mm at 27.5, 85mm at 30, 80mm at 35, 70mm at 40, 60mm at 45-75 and 55mm at 85 degrees and over; a 600 x 300mm slate needs 190mm at 22.5 degrees. Small slates (400 x 250mm and below) are only listed from 35 degrees, at 70mm headlap falling to 45mm at 85 degrees plus. Severe exposure (56.5 l/m2 per spell or greater) demands markedly more: 600 x 350mm needs 150mm at 22.5 degrees, 130mm at 25, 120mm at 27.5, 110mm at 30, 100mm at 35, 85mm at 40, 80mm at 45-75; 500 x 250mm is not permitted below 25 degrees and needs 150mm there. Recommendations apply to rafter lengths up to 9m in moderate and 6m in severe driving rain exposure.

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35. supplier figure RN-BXJX6T

    Welsh Slate Ltd

    Welsh Slate standard roofing slate sizes and weights in tonnes per 1000 slates, excluding packaging. Thickness grades are Capital 5.5mm, County 7mm and Celtic 9mm (nominal). Penrhyn Heather Blue: 600 x 350mm 3.23 / 4.12 / 5.29 t per 1000; 600 x 300mm 2.77 / 3.53 / 4.54; 550 x 300mm 2.54 / 3.23 / 4.16; 500 x 300mm 2.23 / 2.94 / 3.78; 500 x 250mm 1.93 / 2.45 / 3.15; 455 x 250mm 1.75 / 2.23 / 2.87; 400 x 250mm 1.54 / 1.96 / 2.52; 400 x 200mm 1.23 / 1.57 / 2.02; 350 x 250mm 1.35 / 1.72 / 2.21; 350 x 200mm 1.08 / 1.37 / 1.76; 300 x 300mm 1.51 / 1.76 / 2.27. Ffestiniog Blue Grey is slightly lighter, for example 500 x 250mm 1.86 / 2.36 / 3.04 t per 1000 and 400 x 200mm 1.19 / 1.51 / 1.94.

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36. supplier figure RN-DSY1KY

    Whitesales Ltd

    Whitesales bespoke aluminium lantern rooflight: spans from under 1m up to 7m unsupported, and larger with a supporting framework. Standard slope 30 degrees, with bespoke pitches available. Glazing options are polycarbonate multiwall or solid sheet, or single, double or triple glazed glass (clear, opal diffused or heat reflect polycarbonate); thickness and type are determined by the unit size and configuration. Installed on a site-formed upstand or a proprietary em.curb, terminated with glazed gable ends, hipped ends, wall abutments or open ends, with bays at equal centres as standard.

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37. supplier figure RN-Z59YXK

    Whitesales Ltd

    Whitesales em.curb proprietary rooflight upstands, compatible with single ply (bonded, welded or mechanically fixed), torch-on felt, hot melt, asphalt, GRP and liquid waterproofing systems. Options include 150 Splayed GRP for circular units with integral 10mm polyurethane foam insulation, and 150 Splayed uPVC in extruded white multi-chambered profile. Whitesales states that choosing a vertical kerb rather than a splayed one increases daylight transmission by up to 40%, and that kerb selection changes the overall thermal transmission and U-value of the rooflight, which is why an installed rooflight U-value must be quoted with its upstand.

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38. supplier figure RN-W1HJX5

    Whitesales Ltd

    Whitesales em.dome modular rooflight: over 140 sizes from 400 x 400mm to 1900 x 2900mm, in a range of shapes, profiles and glazing options, with many sizes ex stock for next day delivery if ordered before 2pm. Normally specified with proprietary em.curb upstands but can be installed on builder's curbs; curb adaptors are available where the dome replaces an existing rooflight. Compliant with HSG33 recommendations (the HSE guidance on health and safety in roof work).

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39. supplier figure RN-9LOCG0

    Whitesales Ltd

    Whitesales em.glaze flat glass electric opening rooflight, with single or tandem actuators that communicate with each other. Air tightness Class 4 at 60 Pa to EN 12207 / EN 1026 (note the opening version is rated at 60 Pa where the fixed Premium is rated at 300 Pa and higher). Thermal insulation 1.24 W/m2K with a uPVC 150mm vertical upstand, to EN/ISO 10077-1, EN/ISO 10077-2, EN67 and DS418. Non-fragile to CWCT Class 1 as standard. 15 stock sizes in 3-5 days, bespoke sizes in 5-8 weeks.

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40. supplier figure RN-19N6P5

    Whitesales Ltd

    Whitesales em.glaze flat glass Premium modular rooflight. Glazing is a 32mm hermetically sealed double glazed low-E argon-filled unit with a warm edge spacer and toughened outer pane; standard frit width 84mm. Two distinct U-figures are published and should not be conflated: thermal insulation of the rooflight installed on a uPVC 150mm vertical upstand is 1.24 W/m2K (to EN/ISO 10077-1, EN/ISO 10077-2, EN67, DS418), while the Ud-value of the complete glass unit tested vertically is 1.23 W/m2K. Recommended installation pitch on an em.curb or builder's upstand is 5 to 15 degrees. em.curb upstand options include ECO uPVC 150mm splayed or vertical, 300mm splayed and 350mm oversleeve splayed. Aluminium frame is thermally broken and fully welded, powder coated Anthracite Grey RAL 7016 as standard. 14 stock sizes on 3-5 day delivery.

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