Roofing & Exterior
TimberTech and AZEK, Built for the Rain They'll Live In
TimberTech capped composite and AZEK capped-PVC decking — moisture-resistant, low-maintenance, and installed on engineered framing with hidden fasteners and finished edges.
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Signs to watch
Is this you?
You want the top of the composite market
TimberTech and its AZEK line sit at the premium end of engineered decking. If you're building once and building well, they're worth putting on the comparison table.
Moisture is your deck's real enemy
In a climate this wet, moisture resistance is the whole game. AZEK's all-PVC construction and TimberTech's capped composite are both built to keep water out of the board.
You're finished maintaining wood
Both lines trade the stain-and-seal treadmill for a periodic wash. In the PNW, where wood demands constant care, that's years of weekends back.
Appearance matters as much as durability
These lines chase realistic wood-grain looks and deep color ranges. If you want the low-maintenance surface without the plastic look, they're where the market's appearance lives.
Your options
TimberTech composite vs. AZEK PVC — the honest difference
Both come from the same manufacturer, and the core distinction is what the board is made of. TimberTech's capped polymer and capped composite lines wrap a wood-and-plastic or mineral core in a protective shell. AZEK is capped cellular PVC — all-plastic, no wood fiber in the board at all — which is the most moisture-resistant construction of the group and typically the lightest and the premium tier. Both resist staining, splintering, and the moss that colonizes wood grain here; AZEK's zero-wood makeup gives it the edge where standing water and damp are relentless. Like any capped board, both can run warmer than wood in direct summer sun, so color and shade come into the conversation. Warranties are set and published by the manufacturer and differ by line — we'll direct you to the current coverage for the exact product you choose rather than cite a number that might be stale. Whatever the surface, the structure carries it: footings below frost line, ground-contact-rated framing at required joist spacing, hidden fasteners, and a flashed, bolted ledger. These are real product lines we install to spec — we're installers building the manufacturer's system, not holders of a certification we'd claim we don't have.
The method
How we do it
- 01
Material, line, and shade review
We lay out TimberTech composite against AZEK PVC on moisture, appearance, heat, and budget, match a line to your sun exposure, and design the frame to carry it.
- 02
Foundation and frame
Footings inspected below frost line, framing in ground-contact-rated lumber at required joist spacing, and the ledger flashed and bolted like the roof detail it is.
- 03
Deck, edges, rails, walkthrough
Boards set with hidden fasteners, fascia and railing integrated for a finished edge, a hose test on the ledger flashing, then a walk of the finished deck with you.
Straight numbers
What these decks cost here
TimberTech and especially AZEK sit at the premium end of decking — the boards carry a real premium, and AZEK's all-PVC construction typically prices above the composite lines, with correct framing part of the number either way. What moves it: which line you pick, square footage, height and access, railing and fascia, and stairs. The return is maintenance you skip for years. We price these against wood and against each other honestly so you're weighing true long-run cost, not just the day-one figure.
Where we do this work
TimberTech & AZEK Decking: straight answers
What's the difference between TimberTech and AZEK?
They're lines from the same manufacturer. TimberTech's capped composite and polymer boards wrap a core that includes wood or mineral content; AZEK is capped cellular PVC — all plastic, no wood fiber. AZEK is the most moisture-resistant and usually the premium tier; TimberTech composite offers strong performance at a range of price points.
Is PVC decking better than composite in the rain?
For pure moisture resistance, AZEK's all-PVC construction has the edge — there's no wood fiber in the board for water to reach at all. Capped composite is still highly moisture-resistant and performs well here. In a climate this wet, either beats wood; AZEK is the choice when standing water and damp are relentless.
What warranty comes with these decks?
Both lines carry manufacturer warranties that vary by product and are published and updated by the maker. We'll point you to the current coverage for the specific line you select rather than quote a figure from memory — coverage terms change, and we'd rather you see the real one.
How do these compare to Trex or cedar?
Against Trex, it's premium composite versus premium composite — AZEK's all-PVC option gives it a moisture edge, and we'll compare colors, feel, and price straight. Against cedar, it's low-maintenance longevity versus real-wood feel and lower up-front cost. We install all of them and price the honest comparison.
Get the timbertech & azek decking conversation started.
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