DAP DYNAFLEX ULTRA 7079818215 Advanced Exterior Sealant, Iron Gray, 40 to 100 deg F, 10.1 oz Cartridge
DAP DYNAFLEX ULTRA 7079818215 Advanced Exterior Sealant, Iron Gray, 40 to 100 deg F, 10.1 oz Cartridge
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DAP DYNAFLEX ULTRA 7079818215 Advanced Exterior Sealant, Iron Gray, 40 to 100 deg F, 10.1 oz Cartridge

4.6 stars out of 57 reviews
(4.6)|
57 ratings

Key item features

  • Advanced Formulation: This DAP Dynaflex Ultra sealant features innovative Weather Max Technology for comprehensive all-weather protection and exceptional UV resistance against fading, yellowing, cracking, chalking, and crumbling.
  • Durable Performance: Once cured, the Iron Gray sealant resists mold, mildew, and algae, while its tough surface repels dirt buildup and water absorption, ensuring a 100% waterproof seal.
  • Flexible Adhesion: Formulated with advanced latex, it provides strong multi-material adhesion and remains permanently flexible to withstand expansion and contraction from environmental elements.
  • Efficient Application: The 10.1 oz cartridge offers 55 linear feet of coverage, is rain and paint ready in one hour, and allows for easy gunning and smooth tooling.
  • Convenient Cleanup: This sealant is designed for easy water cleanup and has a low odor, making it suitable for both indoor and outdoor applications.
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DAP DYNAFLEX ULTRA 7079818215 Advanced Exterior Sealant, Iron Gray, 40 to 100 deg F, 10.1 oz Cartridge $20.60

DAP DYNAFLEX ULTRA 7079818215 Advanced Exterior Sealant, Iron Gray, 40 to 100 deg F, 10.1 oz Cartridge
current price $20.60

DAP DYNAFLEX ULTRA 7079818215 Advanced Exterior Sealant, Iron Gray, 40 to 100 deg F, 10.1 oz Cartridge

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Customer ratings & reviews

4.6 out of 5 stars
stars57 ratings55 reviews
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Reviews summary

Pros
  • : Process is quick and easy.
  • : Allows for simple cleanup after use.
  • : Works well for sealing and insulating them.
  • : Forms a 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.

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Dec 18, 2020
Stewart
5 out of 5 stars review

Verified Purchase

Good value by the case

Ordered to arrive in time for a scheduled renovation project. Good value for the price.

Helpful?3DMDD12N2EHI884356167
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.

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