DAP Dynaflex 230 is a premium elastomeric latex sealant with silicone-like toughness. This DAP sealant combines outstanding durability, adhesion and flexibility with easy tooling, paintability, low odor and water clean-up. It is highly flexible to handle joint movement caused by variations in temperature and humidity without cracking making it an excellent choice for outdoor use. Provides a long-lasting, durable seal that is 100% waterproof and weatherproof. Ideal for caulking and sealing air leaks around windows, doors, siding, trim and baseboards to improve the energy efficiency of a home and reduce utility costs. Meets ASTM Specification C920, Class 25. VOC compliant. Interior/exterior use. DAP caulk and sealants provide durable performance for a variety of projects.

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

DAP Dynaflex 230 sealant is Silicone tough with superior flexibility and crackproof performance
Dynaflex 230 is a premium elastomeric latex paintable sealant that can be painted in 2 hours
Dynaflex 230 100% waterproof sealant provides a weatherproof seal
White sealant seals joints up to 2" wide and performs like silicone providing a highly flexible sealant that handles joint movement without cracking
Premium elastomeric latex sealant adheres to a wide range of building materials indoors or outdoors, such as wood, MDF, PVC, polystyrene, and composite trimboard
Paintable, allowing for a seamless finish that blends perfectly with your surface, whether you use latex or oil-based paints.
Water-resistant formula offering reliable protection against moisture and humidity
Used for a waterproof sealant on windows, doors, siding, and trim
Suitable for both indoor and outdoor applications, making it a versatile choice for all projects.
Smooth application and easy tooling ensure a clean, professional-looking finish every time, saving time and effort during installation.
Provides the durability of silicone with superior adhesion, ensuring a tight, secure seal that resists weathering.
"Designed for comfort, it has a low odor formula, making it easier and more pleasant to work with in indoor spaces. "

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Reviews

Rating Snapshot

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105 reviews with 5 stars.

15 reviews with 4 stars.

3 reviews with 3 stars.

0 reviews with 2 stars.

6 reviews with 1 star.

Overall Rating

4.7

121 out of 127 (95%) reviewers recommend this product

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application
ease of use
cleaning
for rainy weather
purchase
metal
satisfaction
installation

1 to 4 of 129 Reviews .

1 – 4 of 129 Reviews

Tony1

Wexford, PA

Review 1

GenderMale

Age65 or over

1 out of 5 stars.

2 years ago

Bad product. It smeared and dissolved after a rain storm

No, I do not recommend this product.

Originally posted on DAP.com

Response from DAP.com:

2 years ago

Technical Department

Thank you for posting your feedback. We are sorry to see your low star review on DAP Dynaflex 230 Premium Elastomeric Sealant. Because you did not indicate a time component, the size of the joint, application surfaces or application conditions, it is difficult to provide a proper response. At your convenience, please contact DAP’s Technical Customer Service Department at 888-327-8477 so that we can obtain some additional information from you about your project and provide you with the guidance you need to move forward.

Rory57

Review 1

5 out of 5 stars.

2 years ago

I've been using this brand for a few years now. When I converted a small barn to a shop the ceiling was covered in galvanized roof metal. The Dap #230 I purchased at the lumber yard was used to fill the gaps along where the wall an ceiling meet. It sealed and adheres to the different material very good. What I also like is that you dont have to plug the tip after opening the tube to keep the caulk from solidifying and wasting a tube if you dont use it up right away. I forgot to do that and a few days later I came back and used the tube with no problem after forgetting to tape the tube tip. This brand and specific product is now my go to product for any caulking needs.

Yes, I recommend this product.

Originally posted on DAP.com

Lou

Nebraska

Review 1

5 out of 5 stars.

Best product for many uses

3 years ago

This product is exceptionally easy to place and shape quickly and evenly. It dries without unexpected shrinkage or sagging; it has replaced most situations where I would have used pure silicone previously. It's excellent for sealing countertops to walls, and similar intersections with a variety of different materials, including masonry and metal. Superb workability in borderline temperatures.

ProsEasy To Clean, Smooth Trigger

Yes, I recommend this product.

Originally posted on DAP.com

Ottawa Ontario

Review 1

5 out of 5 stars.

Fantastic, better than Alex caulking.

4 years ago

Since discovering this product we have switched almost exclusively to Dynaflex 230. As professional cabinetmakers we use dozens of tubes in a year to finish our work to walls and floors. The product is easy to use, easy to clean, will still work a month or so after opening it (must be unclogged) and most of all, is superior to the Alex product (also by DAP) since it resists mould when left unpainted - the Alex turns grey after a year or so. We also use it as an adhesive in some instances.

ProsEasy To Clean

Yes, I recommend this product.

Originally posted on DAP.com

Dap 10.1 oz. Dynaflex 230 Premium Latex Sealant

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Dap 10.1 oz. Dynaflex 230 Premium Latex Sealant

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Reviews

Rating Snapshot

Overall Rating

Review this Product

Best product for many uses

Fantastic, better than Alex caulking.