AZEK Deck Cost in Illinois
A AZEK deck in Illinois costs $55-$120/sqft installed with the state's 1.00× labor multiplier (Midwest). AZEK is the cellular-PVC premium brand (now part of TimberTech but sold under the AZEK name). 100% PVC core (no wood content) — termite + mold proof, scratch-resistant cap, lowest CTE of any major brand. Top of the deck-board pyramid. Illinois labor 1.00× national (Midwest baseline). Chicago's permit process is more involved than downstate.
AZEK cost by deck size in Illinois
Mid-tier AZEK (AZEK Vintage Mahogany) at Illinois's 1.00× labor multiplier — ~$72/sqft installed.
Cost ranges include materials + labor + standard railing. Excludes permit ($175 baseline + 1.2% of project value), demolition (if replacing), and footings for 42″ frost depth.
AZEK product lines in Illinois
AZEK installed cost ranges from $55/sqft (Vintage Coastline on standard framing) to $120/sqft (Harvest Slate Gray on premium engineered framing with PVC railing). PVC is the priciest mainstream deck-board option but has the longest warranty + lowest maintenance.
Illinois-specific notes
Get a precise AZEK quote for Illinois
Open the AZEK Deck Calculator with IL pre-selected to dial in your exact size, board line, and railing choices.
FAQ — AZEK in Illinois
How much does a AZEK deck cost in Illinois?▾
In Illinois, AZEK decking costs $55-$120/sqft installed (national $55-$120/sqft × Illinois's 1.00× labor multiplier). A typical 16×20 (320 sqft) AZEK deck lands around $28,160. Mid-tier AZEK Vintage Mahogany runs about $23,040 for the same scope.
Which AZEK line is best for Illinois's climate?▾
Illinois's freeze-thaw cycles favor PVC over composite where budget allows. AZEK PVC is the top performer for snow regions — no swelling/contracting from freeze-thaw.
What's the permit fee for a AZEK deck in Illinois?▾
Illinois permit fees typically run $131-$324 depending on jurisdiction and project value — most calculators use max(regional baseline $175, 1.2% of project value). Chicago metro permits $250-400. Frost depth 42″ across most of state.
How deep do footings need to be for a AZEK deck in Illinois?▾
Illinois's frost depth is approximately 42″. AZEK doesn't change the footing requirement — that's IRC R403.1.4-driven by frost line. Use Sonotube 10-12″ depending on tributary area. Verify with your local building department since AHJs sometimes require deeper depths than the state-published value.
Is AZEK worth the money in Illinois?▾
AZEK vs PT pine over 25 years in Illinois: PT pine = ~$30/sqft installed + ~$3/sqft/yr maintenance (stain/seal annually) = $93/sqft total. AZEK mid-tier = $72/sqft installed + $0 maintenance = $72/sqft total. AZEK typically wins the 25-yr TCO comparison by 20-40%, plus better resale value.