Azek Decking Cost: 2026 UK Price Guide

Azek is an American brand of cellular PVC and capped composite decking, sold in the UK under the Azek and TimberTech labels. It positions itself at the premium end of the market, alongside Trex Transcend and Millboard, and is priced accordingly. TimberTech publishes no UK prices, and we found no UK merchant listing Azek boards online, so an Azek price comes from a distributor’s quote.

Its premium rivals do publish theirs, and they are the fairest guide to what to expect. Trex Transcend is £117.53 including VAT for a 4.88 m board at Howarth Timber, about £172 per m².¹ Millboard’s own retail price guide, dated January 2025 and including VAT, puts its decking boards at £145.99 to £187.46 per m².²

That puts boards of this class at the upper end of what you would pay for any composite or PVC decking in the UK. Whether the premium is justified depends on the performance characteristics you need and how long you plan to keep the deck.

What Is Azek Decking?

Azek decking is not traditional composite (wood fibre + plastic); it is cellular PVC, entirely plastic, with no organic wood fibre content.³ The TimberTech range (sold alongside the Azek brand in the UK, under the same owner) includes capped composite boards, which combine wood fibres with plastic under a protective cap.⁴ TimberTech gives its composite boards 25 or 30-year product, fade and stain warranties.⁴

Key characteristics:

• No organic content, cannot rot, will not absorb moisture, highly resistant to mould and mildew
• Stain and scratch resistance, the cap layer on capped products is highly durable
• Expansion and contraction, PVC moves more than timber with temperature change, so the installation guide’s gapping rules matter: TimberTech asks for a 1/8 to 1/4 inch (about 3–6 mm) gap between the sides of Advanced PVC boards⁵
• Colour range, available in realistic wood-effect finishes; the Azek Vintage Collection includes shades such as English Walnut, Mahogany, Weathered Teak and Coastline
• Warranty, TimberTech’s own site gives its Advanced PVC (Azek) boards a limited lifetime product warranty and a 50-year fade and stain warranty; UK terms depend on the distributor, so get them in writing³

Azek Decking Cost Per m²: 2026 Breakdown

TimberTech sells the boards in collections, among them Harvest, Prime+, PRO Reserve and the Azek Vintage Collection, and publishes no UK price for any of them. Get a written quote from a distributor, per m² and for the same deck, before comparing. Azek and TimberTech boards are available through specialist composite decking distributors rather than from the high-street merchants.

The rest of the deck is priced in the open, and costs the same whichever board goes on top:

• Frame and substructure: UltraDecking’s January 2026 price guide puts the timber joists for a deck at about £17.15 per m² and the posts at about £7 per m².⁶
• Fixings: in the same guide, the hidden clips and screws for a 10 m² deck came to £104.96, about £10.50 per m².⁶

How Does Azek Compare to Other Decking Options?

These are published UK board prices, supply only, with the price per m² worked out from the board’s face area:

• Pressure-treated softwood: Wickes’s Standard treated deck board is £3.06 a metre, about £25 per m².⁷ Its thicker Pro deck board is £5 a metre, about £35 per m².⁸
• Hardwood: yellow balau boards, 21 × 145 mm, are £9.33 a metre before VAT from a specialist importer, about £64 per m² before VAT.⁹
• Entry-level composite: NeoTimber’s Classic hollow board, 145 mm wide and 3.6 m long, is £24 including VAT, about £46 per m².¹⁰
• Mid-range composite: Trex Enhance Basics is £36 for a 3.66 m board at Wickes, about £70 per m².¹¹ Trex Enhance Naturals is £59 for a 4.88 m board, about £86 per m².¹²
• Premium composite and Millboard: see the published Trex Transcend and Millboard prices at the top of this guide.

Azek sits alongside Millboard and Trex Transcend as a top-tier product. On those published prices, boards of this class cost three to four times as much per m² as entry-level composite, but the maintenance saving over pressure-treated timber over 20 years can offset some of this.

Installation Costs and Labour

UltraDecking’s January 2026 price guide, which it says draws on over 50 professional UK fitters, puts the average decking fitter’s day rate at £200 a day.⁶ In its case study a 10 m² deck with a new timber subframe took two to two and a half days, so labour came to £500, and the finished deck to £1,208.32 to £1,514.86 depending on the board.⁶ That case study used the supplier’s own boards, so a deck in Azek would add the difference in board price on top. London and South-East rates are typically higher.

For Azek/TimberTech specifically, correct installation matters more than with solid timber:

• A conventional timber joist frame is acceptable: TimberTech’s composite installation guide covers shimming or planing timber joists, and an aluminium frame is an option rather than a requirement¹³
• Use the fasteners TimberTech approves: hidden clips, or top-down screws such as its colour-plugged Cortex system; the Advanced PVC guide suggests face fastening with stainless steel screws where heat build-up could open up gaps⁵
• Board gaps must follow the installation guide: Advanced PVC (Azek) boards are laid with their ends butted tight, with no gap at butt joints, while TimberTech composite boards have their own gapping rules⁵

Always use an installer who can evidence experience with PVC/composite board installation and who will provide documentation with the warranty transfer.

Running Costs and Maintenance

One of Azek’s main selling points is near-zero maintenance:

• Annual care: sweep clean, occasional wash with soapy water or a composite deck cleaner
• No oiling, staining, or sealing required
• No sanding as the cap layer is integral to the board

Over 25 years, a timber deck needs sanding and treating every 2–3 years, eight to twelve treatments in all, against none for Azek. The products are not the main cost: Wickes’s own decking stain is £20 for 2.5 litres, or £8 a litre.¹⁴ The cost is the labour, or your weekends.

Does Azek Require Planning Permission?

Decking in a rear garden up to 300 mm above ground level is permitted development in England, provided the decking together with any other extensions and outbuildings covers no more than 50% of the garden. Above 300 mm, or forward of the wall forming the principal elevation, planning permission may be required, and within the curtilage of a listed building no decking is permitted development at all.¹⁵ The surface material, timber, composite, or PVC, does not affect the planning rule; what matters is height and location.

Is Azek Decking Available in the UK?

Yes, through specialist decking distributors rather than direct from the maker. The boards are made in the USA and imported.³ Lead times vary: standard colours are often in stock, but premium Azek Vintage boards may have to be ordered in, so check the lead time before booking an installer.

Should You Buy Azek Decking?

Azek/TimberTech is worth the premium if:

• You want a 25+ year deck with very low maintenance
• The deck will be in heavy use or exposed to significant moisture
• Appearance long-term is important (the cap prevents fading well)
• You are prepared to use a specialist installer who understands PVC board requirements

It is harder to justify if you have a modest budget, plan to move within 10 years, or need a deck quickly and cannot source the product locally. In those cases, a mid-range capped composite such as Trex Enhance or Cladco delivers similar performance for considerably less.