Azek Fill-And-Flex Gap Filler
AZEK Fill & Flex is a flexible sealant made specifically for PVC trim applications. Its biggest advantage is that it stays flexible enough to accommodate the natural expansion and contraction of PVC as temperatures change.
It's especially useful for expansion/contraction joints between AZEK PVC trim boards, as well as sealing gaps around windows and doors. AZEK describes it as a slow-curing, one-part urethane-based sealant with high flexibility and elongation.
Key features include:
- 300 mL tube — product number AAD300MLFF
- Designed for AZEK/PVC trim
- Handles movement caused by heat and cold
- Useful for filling deeper gaps; AZEK specifically recommends Fill & Flex for deeper nail holes as well
- Contains premium-grade TiOâ‚‚ pigments
- Designed to resist long-term yellowing
- Slow curing provides plenty of working time
- Applies with a standard caulk gun.
Fill & Flex is primarily a flexible sealant/gap filler, not AZEK's structural PVC adhesive. For tightly bonded AZEK-to-AZEK joints such as scarf and miter joints, AZEK specifies its Cellular PVC Cement/adhesive products instead.
About this product...
AZEK Fill & Flex Gap Filler is a premium urethane-based sealant designed for PVC trim applications. Its highly flexible formula accommodates expansion and contraction caused by temperature changes, making it ideal for expansion joints, trim-board gaps, and sealing around windows and doors. The 300 mL formula provides ample working time and is formulated to resist long-term yellowing for a clean, professional finish.
