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Internet #100678631

Model #181249

NP1 10.1 oz. Gun-Grade Polyurethane Sealants (4-Pack) White

Product Overview

The Sonneborn NP1 10.1 oz. Gun-Grade Polyurethane Sealants (4-Pack) are suitable for application on many surfaces in most climates. The flexible sealants can be used on masonry and concrete.
  • 1-component, solvent-based elastomeric polyurethane formula does not require mixing
  • Adheres to most materials with no primer required
  • Paintable and stainable
  • Mold and mildew resistant
  • Provides great flexibility to help keep moving joints tight
  • Easy to apply using a gun or a tool
  • ASTM C719 tested
  • UL listed
  • Subject to or will include a recycling fee in the following states: CA, OR

Info & Guides

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Specifications

Details

Dry to touch (min.)
20
Features
Paintable,Stainable
Number of Tubes Included
12
Paint Tool Product Type
Sealants
Professional Paint Supplies & Values
Pro Supplies
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
N/A

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 17 reviews
  • 94% recommend this product
Filter by:
Showing 1-17 of 17 reviews
If you have difficulty with product not coming out of container, you likely need to insert someth...
If you have difficulty with product not coming out of container, you likely need to insert something slightly longer than the nozzle down thru the nozzle after you snip the end off and then tap your insert with enough force to force it into the caulk. Remove your insert and wipe any caulk off with a paper towel. Caulk should now flow out fairly easily, regardless of caulk gun used. Definitely not easy to work with but supposed to be long lasting. We’ll see.
by
    • Recommended
    Great Item, slows like butter
    Purchased this a few months ago. I read the reviews on you need a high compression gun. I am not sure if you have a bad batch. So I put mine in the oven Turned the cold oven on at 300 for about 4 minutes, turn off the oven and put the tubes in. I would say the oven got to about 120. I left the tubes in there about 20 minutes. When I took them out they were warm but not hot. I applied the products and it flows like pudding. I used the old hand model with ZERO issues. Also, I just used my finger to smooth the product and it wiped off my finger with a paper towel. I went to paint today and noticed no issues with the caulk, no cracks, just a little dirty from rain the last few months. I will let you know in 10 years if this caulk holds up.
    by
    • DIY
    • Recommended
    NP1
    This stuff really worked well at sealing cracks in cement, and re-caulking our bath tub. Make sure to use a spray bottle with a mixture that is half water and half dawn soap. Soak the NP1 and your fingers in the mixture and smooth out the NP1.
    by
    • DIY
    • Verified Purchase
    • Recommended
    Wrong color and poor packaging.
    The polyurethane sealant is a good product. I ordered 4 tubes of white. I received 4 tubes of grey. It was very poorly packaged. The 4 tubes had a rubber band around them and were shipped in a box twice the size it needed to be with no packing material. Needless to say the bottom of the tubes were pretty banged up. I was able to straighten them enough to work and the color wasn't critical so I didn't return them as the nearest Home Depot is 40 miles. As stated earlier the sealant itself is an excellent product and the price for four was good as well. It does require a very good quality caulk gun to apply.
    by
    • Verified Purchase
    • Recommended
    1 person found this helpful
    Best caulk for Stucco, exterior doors and windows
    This is a very strong caulk, that will last to seal gaps in stucco, between doors, trim and windows. Please note, It will not peel out easily like a silicon caulk.
    by
    • Verified Purchase
    • Recommended
    1 person found this helpful
    Great product
    I've used this product for years. One if the best on the market for many uses to many substrates. I've read that many people have had troubles getting the product to flow out of the tube. You can't use many of the guns you buy at the stores. It takes a high compression gun, the clicker type will just wreck you hands. It was also suggested to use alcohol to tool it. Do not do this, it will stop the curing process or eat the caulking slowly. It's best to use a little soapy water. Use tape where you don't want caulking and alcohol to clean it up.
    by
    • Pro
    • Recommended
    6 people found this helpful
    not able to use....
    Impossible to get out of the caulking gun....too old? It may have reached its shelf life.....please advise. Other reviews say that it is easy to use. Not this batch!!!
    by
    • DIY
    • Verified Purchase
    1 person found this helpful
    faulty product
    The product had exceeded shelf life and was unusable. Sealants and caulk are supposed to flow out of the tube. This product was so hard that it hurt your hand when squeezing he gun.
    by
    • DIY
    • Verified Purchase
    1 person found this helpful
    The product is easy to apply
    I applied the product between wood framing and brick, LP lap siding and brick, and LP verticle siding and concrete. It was very easy to apply and bonded very well.
    by
    • DIY
    • Verified Purchase
    • Recommended
    great for many repairs
    lots of uses repairing roofs, chimneys, water troughs and many other things around farm.
    by
    • DIY
    • Verified Purchase
    • Recommended
    Do the Tighten Up!
    A masonry contractor who tuckpointed my home used this caulk to seal joints around windows, doors and concrete flatwork that touched up against stone and mortar. I bought more to do more caulking work and tighten up my home for winter. This stuff is simply awesome. It dispenses in a standard caulk gun and sets up in about 24 hours. Once set, it moves and flexes with the joint but maintains an airtight seal. Whatever color you choose (Home Depot usually just has white) it will mellow as it ages, blending into your home over time. I would warn users to use rubber gloves when handling this caulk, however. It is not for the novice DIY-er. The material is very tacky and difficult to remove, even with soap and water. Be careful!
    by
    • Verified Purchase
    • Recommended
    1 person found this helpful
    Great Product
    This Adhesive caulk works like a champ for what we needed it for. The adhesion is top quality, and working with it is a breeze.
    by
    • Verified Purchase
    • Recommended
    how to smooth polyurethane caulk
    This stuff is really flexible and really good for caulking windows. It is right on par with Valkum caulk. But keep a spray bottle of rubbing alcohol handy when you are applying it. Dont EVER smooth the caulk with your dry finger. It is too sticky for that. but spray a mist of alcohol on it and then smooth it and it works perfectly.
    by
    • DIY
    • Verified Purchase
    • Recommended
    7 people found this helpful
    Great Product, limited availability!
    Hi, I've used this product for a number of years. The only problem was that I had to travel too far to get it or pay rather high shipping to get it. It's very handy to order it online and pick it up at the Home Depot near me. Keep up the good work. Dan
    by
    • DIY
    • Verified Purchase
    • Recommended
    Tough caulk for tough jobs
    This polyurethane caulk is about the best you can get for adhesion and durability. I've used it to seal exposed cracks in a house foundation and it's held up to several seasonal cycles without a hint of peeling or losing its grip. Highly recommended for those jobs where you want a tough and lasting seal.
    by
    • DIY
    • Recommended
    5 people found this helpful
    Great Product
    Home Depot has this product cheaper than going to a local painters store. The only downside is the only color it comes in is white. Overall satisfied.
    by
    • Pro
    • Verified Purchase
    • Recommended
    6 people found this helpful
    Great Product
    Bonds very well to Metal Roofing, & Brick Cast. This Urethane product will flex with metal and not peel or crack under climate changes.
    by
      • Recommended
      13 people found this helpful
      Showing 1-17 of 17 reviews