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DAP Premium Polyurethane Construction Adhesive Sealant

4.3 out of 5 stars 35 customer reviews
| 22 answered questions

Price: $11.13 & FREE Shipping on orders over $49. Details
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1-Pack
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  • This product is a 10.1Oz Gray Mas Sealantique
  • Purpose of use for Caulk & Sealants, silicone-adhesives
  • Manufactured in the United States
  • Polyurethane sealant
  • Permanently flexible
  • Maximum adhesion
  • Waterproof
  • 10.1 oz
20 new from $5.24

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$11.13 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

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  • DAP Premium Polyurethane Construction Adhesive Sealant
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Total price: $23.46
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Product Description

Size Name: 1-Pack

Product Description

A one-part, moisture-curing, commercial grade sealant. Specially formulated to provide a permanent, waterproof seal when filling exterior gaps, joints and cracks. This high performance sealant offers superior adhesion to a variety of substrates and remains permanently flexible. Paintable. 50 year durability guarantee. Meets or exceeds Federal Spec TT-S 00230C, Type II, Class A and ASTM C 920, Type S, Grade NS, Class 25. Ideal for use on doors, windows, sidings, ducts and vents.

From the Manufacturer

A one-part, moisture-curing, commercial grade sealant. Specially formulated to provide a permanent, waterproof seal when filling exterior gaps, joints and cracks. This high performance sealant offers superior adhesion to a variety of substrates and remains permanently flexible. Paintable. 50 year durability guarantee. Meets or exceeds Federal Spec TT-S 00230C, Type II, Class A and ASTM C 920, Type S, Grade NS, Class 25. Ideal for use on doors, windows, sidings, ducts and vents.

Product Information

Size Name:1-Pack

Technical Details

Part Number 18814
Item Weight 1.4 pounds
Product Dimensions 2 x 2 x 12 inches
California residents Click here for Proposition 65 warning
Item model number 18814
Size 1-Pack
Color Black
Item Package Quantity 1

Additional Information

ASIN B0006MXS42
Customer Reviews
4.3 out of 5 stars 35 customer reviews

4.3 out of 5 stars
Best Sellers Rank #27,164 in Home Improvements (See top 100)
#49 in Home Improvement > Hardware > Adhesives & Sealers > Caulk > Adhesive Caulk
#143 in Industrial & Scientific > Tapes, Adhesives & Sealants > Industrial Sealants
#516 in Home Improvement > Painting Supplies & Wall Treatments > Prep Materials
Shipping Weight 1.2 pounds (View shipping rates and policies)
Date First Available February 17, 2007

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Customer Reviews

Top Customer Reviews

Size: 1-Pack Verified Purchase
This polyurethane concrete and masonry sealant is a very good product. It is the only thing you want to use on concrete. It adheres much better than silcone and will last years longer. It cost more than other sealers but it is worth the extra money knowing that it will still be there years to come. Therefore it is really cheaper in the long run.
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Size: 1-Pack Verified Purchase
I used this product to hold together solid cement bricks for an elevated fern garden. The polyurethane was used with a metal pipe strapping between each layer of bricks. came out awesome and super solid. plenty of time to fit before it hardened. Only thing to note is that it is grey/silvery and it was important to make sure it didn't squeeze out between the blond cement bricks. When it did, it was difficult to completely wipe it off.
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Size: 1-Pack Verified Purchase
Used this to seal the space between a poured concrete patio and the cinder block foundation of the house. 50+ years of settling had caused the patio to slant toward the house and separate from the cinder block by 1/4" to 3/4". Water collected there and has seeped into the basement. I had previously sealed this with silicone sealant, but over the years that separated from the patio and the water seepage resumed. During a recent downpour (3" of rain in 45 minutes), the water seepage was significant. I researched to see what else was available and came up with this product. The description of what it would do fit my needs perfectly and the reviews so far were excellent. I had to use some backfill material since the spaces were pretty deep in spots. I did two applications, filing the space about 1/2 way up the first time; waited a few days and did then the second application. I used 4 tubes. I found it easy to use and the results look good. In a subsequent downpour there was no seepage at all. This was done in July with temperatures in the upper 80's. I wonder what will happen when the weather gets cold this winter and the patio shrinks; will the sealant hold? Time will tell; I'll try to update this review late next spring with my observations.
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Size: 1-Pack Verified Purchase
I used it on my smooth cement garage floor with cracks anywhere from very thin 'spider' to an inch and this stuff fills them all. It's very easy to work with a caulk gun and spatula, not too thin nor thick. Since many of the larger cracks were deep I had to go over them a second time using much less. I did it in warm summer weather and it still took a few days to 'dry' and after a week or so it was hard yet with a very slight flex. It drys with a slight sheen and a color pretty much as shown on the tube. I can tell paint will adhere to it with no problem. I feel really confident it will last a very long time.
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Size: 1-Pack Verified Purchase
Adheres very well to concrete. seems to weather well(its outside) a little on the expensive side but keeps the elements out on cracked concrete foundation.(so far). This winter will be the big test.....
It survived the winter without splitting. This is on an external concrete foundation wall(above ground). Crack is 3 feet long and had a 1/8" opening.... This is good Sealant!
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Size: 1-Pack Verified Purchase
I used this concrete sealant to repair a concrete retaining wall. The short wall/support anchors a wood fence around our back yard. Over the years, it has deteriorated somewhat and an irregular baseball size chunk of the concrete fell off the wall. I spread the Dap sealant over the chunk and put more on the wall where it fell off. I put a couple of pieces of duct tape on the repair and let it sit overnight. When I pulled the tape off the next day, the repair was solid and it has stayed in place for a month or more now. Highly recommend.
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Size: 1-Pack Verified Purchase
I did a lot of research and settled on this product to complete the project I was performing. I have a cinder block home that has stucco over it then painted. There seems to be a shift in the foundation over the years and there were numerous cracks on the outside walls. While I new this profuct would not hold my house together, not only do the cracks look bad, but water and bugs could get inside the walls.
I read the directions and put on some rubber gloves since this stuff is heck to get off your hands, and basically ran a bead of it on top of the cracks then pushed it in and smoothed it around to blend in with the stucco. It says to wait 7 days to paint over it with no primer needed. I painted over it in 7 days and it looks professionally done.
I would buy this product again if needed.
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Size: 1-Pack Verified Purchase
I used this to adhere waterproof LED lights to the underside of my swimming pool's coping. Getting it to stick to concrete was my obvious challenge, but this product worked great.

The adhesive has some immediate hold, as it's very thick. due to the weight of the LED's, I used clamps to hold them in place while the adhesive cured. After about 2 hours, it was dry enough to hold the strips without the clamps. It really did take more than a week for it to completely cure.

I have no complaints and would use this again for another project.
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