DAP Dynaflex Ultra 10.1 oz Light Gray Window, Door, and Siding Sealant

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DAP Dynaflex Ultra 10.1 oz Light Gray Window, Door, and Siding Sealant
DAP Dynaflex Ultra 10.1 oz Light Gray Window, Door, and Siding Sealant
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DAP Dynaflex Ultra 10.1 oz Light Gray Window, Door, and Siding Sealant

4.5 stars out of 57 reviews
(4.5)|
57 ratings

Key item features

  • Advanced Weather Protection: Formulated with Weather Max Technology, this sealant provides durable, all-weather protection for exterior windows, doors, siding, and trim, resisting UV fading, chalking, crumbling, cracking, and dirt buildup.
  • Waterproof Seal: The proprietary synthetic latex formula creates a 100% waterproof and weatherproof seal, ensuring resistance to mold, mildew, and algae on the cured caulk surface.
  • Versatile Adhesion: Bonds effectively to various indoor and outdoor building materials, including wood, MDF, PVC, and composite trimboard, meeting ASTM Specification C920, Class 36.
  • Efficient Application: Dries to a tack-free finish in 30 minutes and is ready for paint and rain in just 1 hour, offering better productivity with effortless gunning and smooth tooling.
  • Clean Appearance: The light gray sealant fills joints up to 1 inch wide, creating a tough hydrophobic surface that prevents water absorption and resists dirt buildup, maintaining a clean look.
  • Low Odor Cleanup: This proprietary synthetic latex sealant is low in odor and can be easily cleaned up with water, making application and post-project tidying convenient.
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Customer ratings & reviews

4.5 out of 5 stars
stars57 ratings55 reviews
How item rating is calculated
  1. 5 stars79% (45)
  2. 4 stars11% (6)
  3. 3 stars4% (2)
  4. 2 stars2% (1)
  5. 1 star5% (3)

Reviews summary

Pros
  • : Application is quick and easy with this.
  • : Allows for simple cleaning after use.
  • : Forms reliable seal in various weather conditions.
  • : Has a strong hold and retains color.
  • : Dries quickly, often within minutes or hours.
  • : Forms a tight seal in cracks without shrinking.
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Showing 1-3 of 55 reviews

Sep 1, 2019
Bill
5 out of 5 stars review

Performs exactly how it's marketed to.

I'm replacing the south facing windows in my house and needed some caulk to seal them with. I had replaced the north facing windows years ago and used Alex Plus caulk, which while easy to apply and cleanup didn't hold up in the long run. It cracked and shrunk. Dynaflex Ultra goes on just as easy and is also easy to cleanup, but unlike silicone can be painted and also remains flexible after curing unlike the Alex Plus. I live in Colorado and this stuff has been applied to south facing windows so it's going to get tested to the extreme. We have temperature swings that can approach 100F on south facing surfaces all winter long, and extreme low humidity (1% was registered on my weather station twice) in the summer. If it holds up here it will work anywhere but only time will tell. That being said I'm impressed enough that I'm sitting here writing a review on caulk so that should tell you something! I'll try and return with an update after 6-12 months to see how it holds up this winter.

Review from DAP.com
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Dec 28, 2017
American Gothic
5 out of 5 stars review

DAP Dynaflex ULTRA great for weatherization projects

[This review was collected as part of a promotion.] Currently we're experiencing well below zero temperatures and I'm very happy with the way Dap's Dynaflex Ultra has worked to seal those tiny cracks preventing moisture and air infiltration. It's been keeping our home warmer this winter and protecting the exterior wood around the windows and doors from the melting and freezing cycle where little drips get into the smallest places and damage the wood. It works well in lower temperatures - it was around 40 degrees when I applied it earlier this month and it's holding up well to rain, snow, sleet and wind. While I did try this as a free sample through Viewpoints, I have since purchased several more tubes at our local hardware outlet and will continue to buy this product because it gets the job done - and done well.

Review from DAP.com
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Jan 30, 2018
Cottonwood Tom
4 out of 5 stars review

Happy with results

[This review was collected as part of a promotion.] I have to replace the seal on my home seams and corners very often living in a very hot climate over 100 degrees for months during summer. The Dap was easy to use and worked as I would like it to, cleaning up was easy as well. Time will tell as to the length of time it will last, I hope it has a longer life than previous products I have used. I received this product as a sample and write a review.

Review from DAP.com
Helpful?5KVF4465Z6JK331068770