Features + Benefits
Features + Benefits
Superior Flexibility and Crack Proof

Seal Joints Up to 2" Wide

Paintable and Easy Water Clean-Up

Outstanding Exterior Performance
Usage

Uses + Applications

100% Waterproof window, door, & trim sealant. Ideal for composite wood and PVC trimboard.

Siding

Flexible enough to endure expansion and contraction without cracking or losing its seal.

Windows

Creates a 100% waterproof and weatherproof seal.

Trim and Baseboards

Seals joints up to 2" wide and has 50% total joint movement.

Doors

Durable and versatile formula backed by a Lifetime Guarantee.
Products

Dynaflex 230 Products

DYNAFLEX 230^® Premium Elastomeric Sealant

Silicone Tough latex sealant that offers outstanding exterior performance against the elements.

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Tips

Helpful Tips

Prep the surface

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.

Secret to 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.

Get a professional looking finish

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.

How to choose the right caulk

Are you not sure what caulk or sealant is right for your project? With so many choices, it can be confusing.
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Lower Your Energy Bills by Weatherizing Your Home

Properly sealing windows and doors not only prevents unwanted drafts, but also protects against damage from the elements.
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How to Fix Drafty Windows

Keep currents of cool air in check with these indoor and outdoor solutions.
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How to Caulk Like the Pros

Hone your caulking skills with these 8 tips for indoor and outdoor projects.
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How to Seal and Insulate a Window and Door

Prevent air leaks and help your home be more energy efficient and comfortable with this step-by-step project.
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Choosing the Right Caulk or Sealant

Use this guide to help you find the right caulk or sealant for the most common home projects.
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