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Boat Foam - Pouring Expanding Flotation Foam - 2lb density closed cell Polyurethane - 1 Gallon - Single Component needs only mixing with 1% to 5% water - Waterproof, Thermal Insulation, Soundproofing.

    • Based on 12 reviews
Condition: New
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Features

  • -Advanced tehnology of single component formula with foaming ration up to 30 times.
  • -Good propeties for flotation , waterproofing , sound proofing , thermal insulation.
  • -Not sensitive to the added water amount (1% to 5%..) and needs 20 second manual mixing (no need for drill mixing)
  • -Start foaming after 2 minutes after mixing with water which gives enough time for pouring. and it finsh complete foaming in 6 minutes , and tack free in 20 mi0nutes.
  • -The small packing of 1 Gallon makes easy handling.

Description

"Comtech Boat Foam" 2 Lb. Density is a new technology formula of single compontent expanding polyurthane foam for boat flotation. -It needs only mixing with 1% to 5% water to start foaming (manual mixing without drill). -It's suitable for filling gaps in all kind of boats , kayaks and other marine applications. "Comtech Boat Foam" is expanding with a high ratio to save the consumed quantity. -When it cured it makes rigid strong closed cell foam. -Reaction time : 2 minutes to start foamin , 6 minutes to complete foaming , 20 mintutes tack free. -As it has low viscosity it can penetrate through very narrow gaps. Foaming ratio up to times.

Item Package Dimensions L x W x H: ‎10.43 x 6.57 x 4.29 inches


Package Weight: ‎4.6 Kilograms


Brand Name: ‎Generic


Manufacturer: ‎USA


Date First Available: August 10, 2023


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Top Amazon Reviews

    • Great foam!
Review Image by Michael P. Michael P.
Review Image by Michael P. Michael P.
Review Image by Michael P. Michael P.
I waited for a warm afternoon, and mixed with a healthy splash of boiling hot water. The expansion of this stuff is great. And the excess is easily cut off with a small wood saw. I'm glad I poured it before the new deck. I probably would have blown it out, that's how much this stuff expanded. It peeled out of my plastic mixing cups so I could use them over as well. Would definitely buy again. ... show more
Reviewed in the United States on April 13, 2024 by Michael P. Michael P.
    • Excelente producto
Review Image by Natalia Toledo Torres Natalia Toledo Torres
Excelente producto! Fácil de trabajar, 0 complicaciones. En 10 min aprox. Ya está seco y expandido completo. Los 2 pies cúbicos de expansión son reales. Foam duro y de calidad
Reviewed in the United States on April 6, 2024 by Natalia Toledo Torres Natalia Toledo Torres
    • Use HOT water!! A large splash will do.
This stuff works very well if everything is warm. There are no instructions except use 1-5% (a few drops) of water. I used 3 gallons on my boat project. The first gallon I use room temperature water from a spray bottle. I mixed in 5-6 squirts. Then mixed for 90 seconds and poured. The results were disappointing. I had very little expansion (only about 5 times expansion). The result was a bulletproof thin layer of hardened sludge in the bottom of my fiberglass boat. (Which may not be all that bad- but not what I was expecting.) Honestly I was disappointed. The next gallon I used boiling hot water. I used a solid splash poured from a pitcher. I mixed vigorously until I got a color change from dark brown to tan. Then suddenly the slurry kicked! I had to pour quickly to get the rising foam out of my bucket. The results were fantastic! Very high expansion with very strong foam formation. Probably 30 times expansion. Every bit as much as a two part A & B expansion foam. At this point I was very pleased. The third gallon mixed with hot water worked as well as the second. (Caution the expanding foam does build some pressure in a confined space. I did hear my boat hull grown and pop as the foam expanded. I would recommend having your boat foam stored at room temperature until use. Pour your foam on a warm day into a warm compartment and use a solid splash of hot water and mixing vigorously for best results. Even though my first first attempt was disappointing. I’m going to give this product 5/5 stars. ... show more
Reviewed in the United States on November 12, 2023 by Shara
    • Works great
We bought this product to help repair some broken foam in our boat. With limited instructions and reading everyone reviews it works awesome. I will say it’s important to use warm to hot water to get the full results. I will definitely be reordering more to redo my little boat this summer .
Reviewed in the United States on March 10, 2024 by stephanie roberts
    • Worked as stated
Pour after 30 seconds of mixing, mixture will be liquid still it may seem like nothing is happening but IT IS. if it’s already reacting & turning into foam it’s hard to pour. Pour in liquid state AND WATCH IT GROW. Pour sparingly a little goes a long way. Just need enough to cover the surface of what you’re pouring do not lay it thick unless you’re working in a very deep cavity ... show more
Reviewed in the United States on January 23, 2024 by Vivify
    • Really, pretty amazing.
I was dubious of the claims but this stuff works. It is not as rigid as I expected. I was amazed that the humidity in the air actually was enough to set it his off. I am so impressed with in in my boat, I may try it in the attic. Lay out a thick film with an undercoat gun and let Floridas humidity do the rest. I’ll updat the latter once I try it. But for the boat, it is so much easier than mixing equal parts of A and B and hoping the ratio is right. This stuff seems very tolerant on the amount of water needed. Anything between 1 and 10% does just fine. One last thing… when you think it is done expanding, it will slowly grow another inch! It’s easy to cut with a handsaw. I fiberglassed right over it and it held up fine. ... show more
Reviewed in the United States on October 16, 2023 by REMAX_RussellLutzFL
    • Works like 2 part foam
Review Image by Michael Richardson Michael Richardson
Followed another reviewers tips. Used hot water and made sure surface and space was warm. Foam before mixing was at 65f I put it in a water bath and warmed to 80. Mixed 5g hot water to 8oz foam. Stirred vigorously as soon as it changed colors I started pouring. Cavity filled and foam was pretty solid in 20min. ... show more
Reviewed in the United States on January 16, 2024 by Michael Richardson Michael Richardson
    • Best pour foam ever
Loved it the best
Reviewed in the United States on October 4, 2023 by Robert

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