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DynaFlex 230

Dynaflex 230 product image
DynaFlex 230 logo

100% waterproof window, door & trim sealant

  • Superior flexibility & crack proof
  • Seal joints up to 2" wide
  • Paintable & easy water clean-up

Key Features

  • Delivers a "Silicone Tough" latex formulation for outstanding exterior performance
  • 100% waterproof & weatherproof
  • Seals joints up to 2” wide
  • Superior flexibility & crack proof
  • Ideal for composite wood & PVC trimboard
  • Paintable, low odor & easy water clean-up
  • Easy to gun out & tools smoothly
  • Interior/exterior

Premium Elastomeric Sealant

Helpful Tips

  • 1

    Proper surface preparation is key. Remove any old caulk from the seam or joint by cutting or scraping it away. Clean the area with soap and water to remove dirt, dust, grease or debris, and rinse thoroughly. Make sure the area to be sealed is clean and dry to ensure good adhesion.

  • 2

    Want straight lines? Apply painter’s masking tape to either side of the joint before applying the sealant. Remove the tape before the sealant skins over – about 2-5 minutes. To remove, lift the edge up at a 45° angle and pull away from you.

  • 3

    To get a professional-looking finish after the sealant has been applied, smooth the bead of sealant with a caulk finishing tool dipped in water. Do this before the sealant starts to skin over, about 2-5 minutes.

DynaFlex230® Available Colors

  • White

  • Clear

  • Almond

  • Clay

  • Cedar Tan

  • Brown

  • Grey

  • Dark Bronze

  • Black

Frequently Asked Questions

Windows, doors and trim are among the top applications for sealant for both Pros and DIYers. Many times consumers choose acetoxy silicone technology for exterior applications on these projects, however DYNAFLEX 230® meets performance standards of acetoxy silicone with the added benefits of being paintable, low odor, easy to tool and easy to clean up with soap and water. It is engineered with increased elongation by 33% to deliver increased toughness for outstanding performance against the elements.

Based on laboratory testing, DYNAFLEX 230® delivers the performance characteristics of acetoxy silicone, but with all of the advantages of a latex sealant (paintable, low odor, easy to tool and easy to clean up with soap and water). Beyond meeting the ASTM C920 Class 25 test standard (demonstrating over 50% total joint movement in extreme temperatures), the DYNAFLEX 230® also meets the same stress/strain tests as acetoxy silicone.

The term “composite” is a term used to describe synthetic building materials (including polystyrene, MDF and others). The synthetic building materials market is a $3 billion industry and is growing quickly, especially with molding and trim. Usage of composite and PVC trimboard has become common, and few sealants are able to claim compatibility with this category of materials.

DYNAFLEX 230® comes in a wide variety of colors to match the most popular colors of exterior siding and trim. Colors include: white, clear, almond, gray, clay, cedar tan, brown, bronze and black.