DAP Dynaflex Ultra 10.1 oz White Window, Door, and Siding Sealant
DAP Dynaflex Ultra 10.1 oz White Window, Door, and Siding Sealant
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DAP Dynaflex Ultra 10.1 oz White Window, Door, and Siding Sealant

4.4 stars out of 58 reviews
(4.4)|
58 ratings
DAP Dynaflex Ultra 10.1 oz White Window, Door, and Siding SealantDap Dynaflex Ultra Advanced Exterior Sealant 7079818211
Size:10.1 oz
Pack Size:Single
Count Per Pack:1

Key item features

  • Weather Max Technology: Dynaflex Ultra, enhanced with Weather Max Technology, delivers durable, all-weather protection, making it ideal for exterior sealant applications.
  • All-Purpose Sealant: Made with a proprietary synthetic latex formula, it forms a 100% waterproof and weatherproof seal for various building materials.
  • Versatile Bonding: Bonds effectively to wood, MDF, PVC, and composite trimboard, complying with ASTM Specification C920, Class 36.
  • Mold and Mildew Resistant: Ensures resistance to mold, mildew, and algae on the cured caulk surface, maintaining a clean appearance.
  • Quick Drying: Dries to a tack-free finish in 30 minutes and is ready for paint and rain in just 1 hour.
  • Wide Joint Filling: Fills joints up to 1" wide and creates a tough hydrophobic surface that prevents water absorption and resists dirt buildup.
  • Easy Cleanup: Low in odor and can be easily cleaned up with water, making application hassle-free.
  • 10.1 oz Unit: The product is available in a 10.1 oz selling unit, suitable for both interior and exterior use.
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Customer ratings & reviews

4.4 out of 5 stars
stars58 ratings56 reviews
How item rating is calculated
  1. 5 stars78% (45)
  2. 4 stars10% (6)
  3. 3 stars3% (2)
  4. 2 stars2% (1)
  5. 1 star7% (4)

Reviews summary

Pros

  • : Product is easy to apply and use.
  • : Withstands extreme temperatures and humidity.
  • : Has a strong hold and retains color.
  • : Forms seals in various crack sizes and types.

Neutral

  • : Can be quick, but varies by user and situation.
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Showing 1-3 of 56 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?332L13P27JFB753191727