AZEK Building Products, Inc.
AZEK Building Products, Inc.
Trim and Beadboards
894 Prairie Ave.
Wilmington, OH 45177
Toll Free: 877-ASK-AZEK
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AZEK Building Products, Inc. > PRODUCT > Fill & Flex Sealant, Gap Filler

Use for expansion and contraction joints on PVC trim boards. Seals gaps around windows and doors. Slow curing, one-part, urethane-based sealant with high level of flexibility and elongation to absorb expansion and contraction from heat or cold.


  • Premium-grade TiO2 pigments
  • Resists long-term yellowing
  • Allows ample work time
  • 300 ml


Rated 5 based on 1 product reviews
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