TotalBoat 2-Part Polyurethane Flotation Foam 2 lb. Density 2-Quart Kit
Jamestown Distributors Totalboat by Jamestown Distributors
  • TotalBoat 2-Part Polyurethane Flotation Foam 2 lb. Density 2-Quart Kit
  • TotalBoat 2-Part Polyurethane Flotation Foam 2-Gallon Kits
  • TotalBoat 2-Part Polyurethane Flotation Foam In Use

TotalBoat 2 Part Polyurethane Flotation Foam

Mix TotalBoat 2-Part Polyurethane Flotation Foam in equal parts and pour in place to soundproof, insulate, provide buoyancy, and even create art. Pourable foam has 94% closed-cell structure to resist absorbing water, and is unaffected by gas or oil. Available in 2 lb & 6 lb density.

2 pound density foam is great for filling voids in non-structural applications. Can be poured beneath decks and inside cavities to provide buoyancy, and has a flotation range of 75 lbs/qt and 300 lbs/gal.

6 pound density foam has higher compressive strength, ideal for filling cavities to support heavy loads. Its smaller cell structure makes it a popular choice for uses ranging from buoys to sculptures. Its flotation range is 23 lbs/qt and 92 lbs/gal.

Both have been tested in accordance with U.S. Coast Guard Regulation # 33 CFR 183.114.

Available in 2-Quart and 2-Gallon Kits.

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Tech Spec Product Info User Generated Content
2-Part Polyurethane Flotation Foam Specifications:
  • The lightweight, 2 lb. density foam is commonly used for filling voids, filling under decks, and practically any other flotation or insulation application.
  • 6 lb. density foam is used for architectural castings, support applications, and has virtually an unlimited number of potential uses.
  • The densities shown refer to the weight per cubic foot of expanded foam (12 in. x 12 in. x 12 in.)
  • 2 lb. density foam expansion: One 2-Quart Kit expands to approximately 2 cubic ft.; one 2-Gallon Kit expands to approximately 8 cubic ft.
  • 6 lb. density foam expansion: One 2-Quart Kit expands to approximately 3/4 cubic ft.; one 2-Gallon Kit expands to approximately 3 cubic ft.
  • All expansion rates and times given are temperature critical. Temperatures below 75 degrees F will lower the expansion rate, which will require more foam. The ideal working temperature is 75 to 80 degrees F, or higher.
  • Accurate measuring of these products is extremely critical.
  • Once fully cured, either foam can be laminated over with any type of polyester, epoxy, or vinyl ester resin without melting. Polyurethane foam is compatible with both epoxy and polyester resin systems.
  • This product can be poured in multiple layers, with excellent bonding between layers.
  • Working time before foaming: Approximately 45 seconds (2 lb. density) to 65 seconds (6 lb. density).
  • Time before full expansion: Approximately 5 minutes
Technical Specifications  2 LB. Density Foam  6 LB. Density Foam 
Mix Ratio by WEIGHT  100 Resin:109 Activator  100 Resin:100 Activator 
Mix Ratio by VOLUME  1 part Resin : 1 part Activator  1 part Resin : 1 part Activator 
Cream Time  45 seconds  65 seconds 
Gel Time  235 seconds  150 seconds 
Tack-Free Time  380 seconds  215 seconds 
Rise Time  400 seconds  240 seconds 
Flotation (Admixed)  75 lbs/qt; 300 lbs/gal  23 lbs/qt; 92 lbs/gal 
Application Temperature  60-85°F (75-85°F is optimal for yield and cure/working times)  60-85°F (75-85°F is optimal for yield and cure/working times) 
Yield: 2-Quart Kit  2 cubic ft.  3/4 cubic ft. 
Yield: 2-Gallon Kit  8 cubic ft.  3.0 cubic ft. 
Weight  9.4 lbs/gal (resin), 10.2 lbs/gal (activator)  9.0 lbs/gal (resin), 10.2 lbs/gal (activator) 
Shelf Life  6 months from date of manufacture  6 months from date of manufacture 
WARNING: The 6 LB. Density Flotation Foam Activator can expose you to chemicals including ethylene glycol, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to

BRAND: Jamestown Distributors
Material: Polyurethane
Number Of Parts: Two Part
Type: Expanding Foam
4.5 53

Great Product , Mix in small portions to test first


I used this foam to fill the transom opening on my pontoon boat , this open portion area fills with water when sitting still , it slowed the boat down on acceleration , the cavity would slowly empty as the boat took off. By filling in this cavity the water does not come in and the boat has much faster acceleration from take off. Great Product. mix small portions to see how much expansion it gives you . wear gloves and have multiple mixing containers. A+ Product


Vista Ca.


I would buy this product again


Worked exactly as described shipped in a timely manner




Great for surfboard repairs


Got this to repair a surfboard that had its foam core damaged. Worked perfectly. Poured it into the void and it filled in all the damage as the foam expanded. Left it overnight and sanded it flush the next day and glassed over the top. Will always keep this on hand for repairs in the future!




works great


Works great! Just make sure you have a lot of gloves, stir sticks and quart containers. wear old clothes and prepare to make a mess. Works great and take your time. The more holes the better.

Capt Quahog

Cape Cod


have used this product twice, no problems


i have used this product twice. no problems with shipping or damaged cans. have not had any cans explode endlessly. my reason for picking totalboat over other brands i had bookmarked is because totalboat 2lb flotation foam actually has the capability of carrying more weight per cubic foot than other brands. plus all products coming from jamestown come from craftsmen,builders,shipwrights and other boat lovers not just a company that sells foam and epoxy and such. the first time i used the foam was at 90 deg and the second time was around 60+deg didnt seem to matter, it still blew and covered bout same area. ( what would be great if it came in a divided tube with a mix nozzle or just a blank caulk tube to get to certain places you cant pour) but will being buying more and other products til im done with my boat. thank you jamestown. 1977 glastron t152 trihull


cincinnati oh


Good material


I filled in the gap between the hull and the cockpit floor thru 1.5 in. Holes I drilled thru the defective balsa sandwich floor. Than i sanded the floor level and epoxied in a 0.5 in. Coosa board to make the new solid cockpit floor.


Boynton Bch Florida


2 part foam sucks


This stiff was terrible, when i opened the lid on the activator it erupted like a volcano and spewed all over my workbench makking a mess everywhere. I was never able to do a complete.mix cause the activator wouldnt stop flowing, waste of money


San angelo texas


Used 2, 2 gallon kits 2lb foam & got only 5 cubic feet worth


I followed the instructions to a T as far as I can tell. The second time I bought this Total Boat foam for the same pour I even got the temperature just above 80 instead of over 75 as i did on the first pour. With my calculations 2, 2 gallon kits of 2lb only yielded about 5 cubic feet total (that's only about 2.5 cubic feet per 2 gallon kit). Am I confused with what the total yield should be? Is it actually supposed to yield just over 2 feet cubed or 8 feet cubed? I've seen many videos of even higher density foam expanding more than this stuff did. This was in the center of a room and i made sure everything got up to proper temp before the pour. The room was near 70 all day before i got it up to 80 and waited about 30 minutes after to proceed. What am i missing? i also stirred heavy with a mixer for 25 - 30 seconds before immediately pouring and the foam was evenly colored. Confused...




2 Part Foam Flotation


Read the directions and have everything ready to go. I found that while mixing the two parts together quickly and counting to 25 the mixture abruptly turns clear, pour the liquid into the void and watch the magic happen. From the video I thought I would get more volume from the foam. I calculated the cubic inches to be filled and came up short. To complete the job I used a second set to make up the difference.


Avalon NJ


Excellent product


I used it for under seat and bow and stern floatation materials in a Cap Dory homebrew. The material, of course is free form whereas the places you want to put it are structural. My point is, that a great deal of planning needs to go into the installation before committing to pouring the compound.




TotalBoat 2 Part Polyurethane Flotation Foam



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