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Internet #306272827

Model #18212

Store SKU #1003545331

Dynaflex Ultra 10.1 oz. Clear Advanced Exterior Window, Door and Siding Sealant

  • Paintable latex flex sealant for exterior and interior use
  • Weatherproof with a lifetime resistance to mold, mildew and algae
  • Maintains flexibility and adhesion and rain ready in 1 hour
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Product Overview

DAP DYNAFLEX ULTRA Advanced Exterior Sealant powered by WeatherMax Technology resists UV fading, chalking, crumbling, cracking and dirt build up so the sealant stays looking clean and new. Permanently flexible with strong adhesion for a long-lasting, weatherproof seal that stands up to the elements and provides All Weather Protection. Easy application with one hour rain and paint ready times for better productivity. Provides lifetime, mold, mildew and algae resistance.

Info & Guides

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Specifications

Dimensions

Individual size (oz.)
10.1

Details

Caulk Form
Standard Tube
Caulk Type
Latex
Color/Finish
Clear
Coverage (linear ft.)
55
Cure Time (hours)
1
Dry Color Family
Clear
Dry to touch (min.)
30
Features
Moisture Resistant,Mold and Mildew Resistant,Permanently Flexible
Indoor/Outdoor
Outdoor
Interior/Exterior
Exterior
Longevity
50 years
Number of Tubes Included
1
Paint Tool Product Type
Caulk

Warranty / Certifications

Certifications and Listings
ASTM Compliant
Manufacturer Warranty
See Use & Care Manual

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.3
    out of 302 reviews
  • 84% recommend this product
Filter by:
Showing 1-10 of 302 reviews
miserable failure
I caulked a penetration where HVAC lines left my house. The caulk came out white, I put most of the tube in. Everything was within the application specs on the side. It rained about four hours after I put the caulk on, it claims to be rain-fast in two hours. I came back the next day to screw the shroud back on, and saw the caulk had completely run, leaving huge gaps. It was still as wet as it came out of the tube. Even the left overs on the outside of the tube, which were in a dry basement, were still wet/tacky. I double checked I bought clear, it was still completely white. As you can see in the image, even after squeezing the caulk thin, it is white. Last time I save money and settle for a DAP product for $1 less.
by d3vd
Response from DAPProductExpertJun 4, 2021
Thank you for posting your feedback. We're sorry to see your low star review on DAP DYNAFLEX ULTRA (CLEAR). DYNAFLEX ULTRA is a water-based (acrylic-latex) formula, the sole drying mechanism is the evaporation of water. Dry time can be significantly impacted by cool or humid application conditions, moisture in the application surfaces, by thick (deep) applications or entrapped application (application into a cavity and/or between surfaces that water cannot pass through). Given your commentary indicating: “I caulked a penetration where HVAC lines left my house” and "I put most of the tube in", it would appear to indicate that the product was not applied in accordance with: “Joint size should not exceed 1" wide by 1/2" deep. For joints deeper than 1/2", use foam backer rod material.” With respect your commentary indicating: “I double checked I bought clear, it was still completely white.”, as indicated on the product package label guidance: "SEALANT APPLIES WHITE & DRIES CLEAR IN 7-14 DAYS. Cooler temperatures and higher humidity will slow down dry time.” Of note: full clarity cannot develop until all of the water contained in the product has evaporated. 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 and to provide you with guidance on how to proceed. DAP
    Had a rotted step at the bottom of the sliding...
    Had a rotted step at the bottom of the sliding door to our deck. Found out it rotted the step, the lowest siding board, bottom of 4 vertical trim boards, and two deck boards. After everything was replaced, I used a couple tubes of DAP sealant. Has to be paintable(not done yet!), clear, and flexible since Colorado weather is rough on wood. Everything is waterproof after the couple inches of snow we had so far. I'll be painting the back door this spring, so will have to update how the sealant accepts the paint.
    by drywallbeginner
    • Verified Purchase
    by HomeDepotCustomer
      When I applied it, it came out white and not...
      When I applied it, it came out white and not clear.
      by Peter
        trasg
        Came out white and never turned clear like its suppose to. Takes way too long to cure.
        by lukemf
        Response from DAPProductExpertOct 8, 2021
        Thank you for posting your feedback. We're sorry to see your low star review on DAP DYNAFLEX ULTRA (Clear). As indicated on the product package label and supporting product literature: " DYNAFLEX ULTRA (Clear) applies white and dries clear in 7-14 days (depending on joint depth, temperature and humidity). DYANFLEX ULTRA is an acrylic-latex (water-based) chemistry, accordingly, the sole drying mechanism is the evaporation of water. Dry time can be significantly impacted by cool or humid application conditions, moisture in the application surfaces or by thick (deep) applications of the sealant. Clear acrylic-latex sealants cannot turn clear until all of the water contained in them has evaporated. Because you did not provide any project details, such as: size of the joint, application surfaces, surface preparation, application technique, application conditions or the amount of time since the product was applied, it is difficult to provide a proper response in this format. 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. DAP
          • Recommended Product
          by ruana
            Rating provided by a verified purchaser...
            Rating provided by a verified purchaser
            by HomeDepotCustomer
              by HomeDepotCustomer
                Great sealant. Just used patching up windows on old...
                Great sealant. Just used patching up windows on old shed.
                by Jules
                  by FREDERIC
                    Showing 1-10 of 302 reviews