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Sold by: Atlantic Boat Supply
Sold by: Atlantic Boat Supply
(19164 ratings)
88% positive over last 12 months
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TotalBoat 6 Lb Density Expanding Foam Kit, 2 Part Closed Cell Polyurethane Liquid Foam for Boat Flotation, Casting, Carving, Sculpture, Reinforcement and Void Filling (2 Gallon Kit)

4.4 4.4 out of 5 stars 405 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Urethane Adhesives by TotalBoat

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2 Gallon Kit

Purchase options and add-ons

Brand TotalBoat
Material Polyurethane Resin
Compatible Material Wood, Fiberglass
Item Form Foam,Liquid
Color Clear

About this item

  • TWO-PART, MARINE GRADE EXPANDING FOAM cures very hard and rigid, with high compressive strength ideal for a number of marine and residential applications, including structural reinforcement, architectural castings, art projects and flotation
  • 6 POUNDS PER CUBIC FOOT HIGH-DENSITY FORMULA is perfect for casting, carving, sculpture, plug making, sign making, flotation for boats and buoys, floating decoys, part fabrication, replicating wooden parts, rigidifying, structural support and more
  • FAST-SETTING, CURES TO A 94% CLOSED CELL FOAM, where each cell traps air and prevents liquids such as water, gas, and oil from penetrating; once fully cured, foam is compatible with epoxy, polyester or vinyl ester resins, and can be painted
  • IDEAL WORKING TEMPERATURE IS 75-85°F. Proper temperature, mixing, timing and venting are critical for proper foam expansion; below 75°F expansion decreases; the foam expands rapidly after mixing, so prep the surface in advance and be ready to pour
  • AVAILABLE IN A 2 QUART KIT AND A 2 GALLON KIT. Yield: 2-Quart Kit – 3/4 cubic ft, 2-Gallon Kit – 3 cubic ft; Flotation Range for 6lb foam: 23 lbs per mixed 2 quart kit and 92 lbs per mixed 2 gallon kit
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Customer ratings by feature

Easy to use
4.3 4.3
Value for money
3.4 3.4

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$114.99 ($0.45/Fl Oz)
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TotalBoat

TotalBoat 6 Lb Density Expanding Foam Kit, 2 Part Closed Cell Polyurethane Liquid Foam for Boat Flotation, Casting, Carving, Sculpture, Reinforcement and Void Filling (2 Gallon Kit)


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Product Description

TotalBoat 6 Lb. density 2-Part Polyurethane Flotation Foam is a versatile, fast-setting expanding foam that cures rigid and strong, making it ideal for a number of structural and artistic applications, It's more than just a flotation foam for boats - use it for filling cavities to support heavy loads, casting, sculpting, making plugs for fiberglass molds, creating floating decoys, fabricating stage and stunt props and much more. This versatile foam can be finished and painted, once cured, and is very easy to cut or carve into shape. Cured marine foam is also compatible with epoxy, polyester, and vinyl ester coatings.TotalBoat two part foam has a simple 1:1 mix ratio that makes it very easy to use, and it cures quickly at room temperature. Always have good ventilation, and wear proper gloves, eye, and clothing protection when you mix or pour foam. Warm conditions of 75-85°F are extremely critical for it to expand properly, as are accurate measuring and thorough mixing. Boat foam expands tremendously by volume, so proper venting is critical in the area where the foam is to be applied. Just mix one part resin and one part activator together, stir vigorously for about 25 seconds, pour immediately into the prepared cavity or mold, and leave undisturbed until cured. The foam hardens, with minimal shrinkage, and can be cut or carved to shape easily. For best results filling larger areas, pour in multiple layers to allow a proper cure and maximum strength bonding between layers. If consecutive pours are not possible, the polyurethane foam will still cure mechanically to itself.Compare to US Composites Expanding Urethane Foam, Fibre Glast Mix and Pour Foam, AeroMarine Pour Foam, and Iso-Pak IsoFoam. TotalBoat 2 Part Marine Foam sets up quickly, and has high compressive strength. All TotalBoat products are developed for boaters, by boaters. We know what works and what doesn't. 100% made in the USA.

Compare with similar items

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TotalBoat 6 Lb Density Expanding Foam Kit, 2 Part Closed Cell Polyurethane Liquid Foam for Boat Flotation, Casting, Carving, Sculpture, Reinforcement and Void Filling (2 Gallon Kit)
TotalBoat 6 Lb Density Expanding Foam Kit, 2 Part Closed Cell Polyurethane Liquid Foam for Boat Flotation, Casting, Carving, Sculpture, Reinforcement and Void Filling (2 Gallon Kit)
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Price-8% $114.99
List:$124.99
-8% $114.99
List:$124.99
$75.99$39.99$75.99$114.99
Delivery
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Customer Ratings
Easy to use
4.3
4.3
4.7
4.0
4.0
Value for money
3.4
4.0
4.7
3.8
3.7
Sold By
Amazon.com
Amazon.com
Fiberglass Supply Depot
Fiberglass Supply Depot
Fiberglass Supply Depot
Fiberglass Supply Depot
color
Clear
Clear
Clear
Black, Yellow, Clear
compatible material
Fiberglass, Wood
Fiberglass
Fiberglass
Vinyl
Polyurethane, Vinyl
Vinyl
volume
2 gallons
2 gallons
1 gallons
1 quarts
1 gallons
2 gallons
number of items
1
1
2
2
1
2
water resistance
waterproof
waterproof
waterproof
container type
Pail
Can
Can
Can
Can
Can

Customer reviews

4.4 out of 5 stars
4.4 out of 5
405 global ratings

Customers say

Customers like the quality, density, and ease of use of the bonding adhesive. For example, they mention it works well, is strong, and is good for structural applications. That said, they are happy with durability, and the ease of mixing. Opinions are mixed on expansion and value.

AI-generated from the text of customer reviews

42 customers mention35 positive7 negative

Customers like the quality of the bonding adhesive. They say it works well, is easy to use, and is excellent. Some customers also mention that the foam expands very wick and works great for adding support where needed.

"Forms quickly and works great for adding support where needed...." Read more

"Amazing product, I’ve been waiting 6 months to try this product.Yesterday, the weather finally allowed me to get some work done...." Read more

"Worked excellent in my boat will bring buying more in future!" Read more

"Product works like it says. Definitely block off they area you are working with...." Read more

13 customers mention10 positive3 negative

Customers like the tightness of the bonding adhesive. They say it's strong, easy to mix, and makes tough, hard foam. It's good for structural applications and hardens quite quickly.

"...Expanded fast expanded well and was as hard and durable as I hoped." Read more

"...- 6lb / CuFt kit, and found that the finished product was robust / tough / solid and probably expanded to the advertised ~3 CuFt volume after I got..." Read more

"...as much as I thought it would but it is very easy to use and hardens quite quickly" Read more

"...it will have to grow vertically more than ~3 inches, that tight structure will vanish and you will get large irregular bubbles...." Read more

9 customers mention9 positive0 negative

Customers like the density of the foam. They mention that it is extremely dense, stiffer than 2 pounds foam, and fine-grained rigid foam that is perfect for sanding or otherwise. The heavier density is perfect to build dock floats.

"I used this for making plugs for fiberglass parts. Makes a dense, fine grained rigid foam that's perfect for sanding or otherwise carving to shape...." Read more

"Good foam, quite dense, and very supportive. Only thing was we only got about 1/3 expansion, alot less than was stated in directions...." Read more

"This is working out well for my project. The foam is dense and cures quickly...." Read more

"...It was much stiffer than 2 pounds foam." Read more

9 customers mention9 positive0 negative

Customers find the bonding adhesives very easy to use. They mention it sets up hard, is easy to mix, and pour.

"...Expands at a somewhat surprising but manageable rate. Sets up hard! Not the fluffy can foam." Read more

"Didn't feel as much as I thought it would but it is very easy to use and hardens quite quickly" Read more

"With the 50:50 ratio, it was very easy to mix. I would advise only using in quantities that you can pour in 10 to 20 seconds...." Read more

"...I would estimate it expands 6 - 8 times. Easy to pour. I was very happy with the results." Read more

4 customers mention4 positive0 negative

Customers like the durability of the bonding adhesive. They say that the foam is dense and cures quickly.

"I used this product for repairing a classic 13’ whaler. It cures very hard and strong.I would estimate it expands 6 - 8 times...." Read more

"...I like the fact that the foam cures quite rapidly. 30 minutes after pouring it was ready to carve." Read more

"This is working out well for my project. The foam is dense and cures quickly...." Read more

"...Be careful with application process and take your time. Stuff is like a rock when cured" Read more

4 customers mention4 positive0 negative

Customers find the bonding adhesive easy to mix. They mention that it makes tough hard foam, and quickly becomes homogenous. They also say the bubbles are always small, consistent, and tight.

"...It rapidly became homogenous and coffee colored...." Read more

"Easy 1:1 mix. Read instructions, but for sure be ready to pour almost immediately. Expands at a somewhat surprising but manageable rate...." Read more

"...Controlling for structure - The initial bubbles are always small, consistent, and tight...." Read more

"This can be a messy operation. Mix well and quickly. Have good ventilation...." Read more

29 customers mention10 positive19 negative

Customers are mixed about the expansion of the bonding adhesive. Some mention it expands fast and well, while others say it didn't expand nearly as much as advertised.

"...There is no way that the lack of expansion was my fault...." Read more

"Forms quickly and works great for adding support where needed...." Read more

"...Tried it 3 times and product would not expand the way it was supposed to, make sure you use the product as soon as possible so it won't leave you..." Read more

"...I did everything by the book, only to wind up with - you got it - low yield!..." Read more

8 customers mention4 positive4 negative

Customers are mixed about the value of the bonding adhesives. Some mention it's a great purchase for the money, while others say it'll be very expensive based on product coverage.

"Great purchase for the money" Read more

"...The price is a little insane for the quality. I mixed as directed and the time given, and this is what came out for using about half of the jugs each." Read more

"Worth the money" Read more

"...This foam is not ideal for budget friendly boat flotation.The product was easy to use and worked as it should...." Read more

Foam structure is highly dependent on how you prep it
4 Stars
Foam structure is highly dependent on how you prep it
I'm not actually using this foam for it's intended purpose. The mechanical properties of the foam are all I cared about. I ran some tests to see if the foam was strong enough and consistent enough for my purposes. What I found was... it can be. This will get a bit long, so you can move on if you're not interested in the structure and or mechanical properties of the foam. I can't imagine any of this would matter if you're actually going to pour this into the hull of a boat.Prep - mix very very well. It's stated clearly in the instructions that it should be mixed until there are no more streaks. Well, the difference is huge between well mixed and partially mixed product. No photos for this one, just follow the directions.Controlling for structure - The initial bubbles are always small, consistent, and tight. If your pour puts in enough material that it will have to grow vertically more than ~3 inches, that tight structure will vanish and you will get large irregular bubbles. I think this happens because the new bubbles are created at the bottom and must force their way upwards, which causes them to join with previous bubbles and create larger voids. I cross-sectioned two samples that I did in toilet paper tubes. One grew up through the tube, the other was capped on both ends and poured through a hole in the side of the tube so that it grew across the diameter of the tube (larger starting area, shorter height, same volume). You can clearly see that the sample with the shorter growing height has a much tighter and consistent structure.Strength - I used a mechanical test frame to calculate the crush strength of the foam. The crush strength is 550-600N (see chart image) while using a 3/4" diameter probe. That equates to roughly 74psi. If you have an irregular foam structure with larger voids (and thicker walls), it is actually 15-30% stronger, but it is much less predictable.
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Top reviews from the United States

Reviewed in the United States on August 30, 2023
Size Name: 2 Gallon KitVerified Purchase
Reviewed in the United States on March 6, 2023
Size Name: 2 Gallon KitVerified Purchase
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Size Name: 2 Quart KitVerified Purchase
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Size Name: 2 Quart KitVerified Purchase
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Size Name: 2 Quart KitVerified Purchase
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Reviewed in the United States on August 10, 2023
Size Name: 2 Quart KitVerified Purchase
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Reviewed in the United States on June 8, 2018
Size Name: 2 Gallon KitVerified Purchase
3 people found this helpful
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Reviewed in the United States on August 12, 2023
Size Name: 2 Gallon KitVerified Purchase
One person found this helpful
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Top reviews from other countries

Michael K.
3.0 out of 5 stars Too expensive
Reviewed in Canada on June 2, 2023
Size Name: 2 Gallon KitVerified Purchase
Jean Horvath
1.0 out of 5 stars Didn’t do as described
Reviewed in Canada on November 16, 2022
Size Name: 2 Quart KitVerified Purchase