We are committed to delivering
the perfect order - on time and hassle free.
Fast and reliable -- Jamestown Distributors will ship anywhere in the world.
Flotation Foam is a polyurethane 2 part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy. 2 Lb. density. Flotation range is 100-120 lbs./qt. and 480-600 lbs./gal.
This expandable foam is recommended for void filling in nonstructural applications. It can be poured underneath decks and inside cavities where a lightweight flotation foam is needed to provide buoyancy. This foam has been tested in accordance with U.S. Coast Guard Regulation # 33 CFR 183.114 . This foam is approximately 95-98% closed cell which resists absorbing water, however continuous water submersion can eventually lead to loss of buoyancy over a period of years.
$49.99
$49.99
$119.99
The item was added to your wishlist.
The item was added to your shop cart.
This two-part liquid, expanding rigid urethane foam is a closed cell, pourable foam, which will resist the absorption of water.
The densities shown refer to the weight per cubic foot of expanded foam (12 in. x 12 in. x 12 in.).
Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
This product can be poured in multiple layers with excellent bonding between layers.
All expansion rates and times given are temperature critical. Temperatures below 75 degrees F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75 to 80 degrees F or above.
Accurate measuring of these products is extremely critical.
Working time before foaming: approx. 45 seconds
Time before full expansion: approx. 5 minutes
The lightweight foam is commonly used for filling voids, filling under decks and practically any other flotation or insulation application. Higher densities are used for architectural castings, support applications and has virtually an unlimited number of potential uses.
Note: One Quart Kit expands to approximately 2 cubic feet, while the gallon kit expands to approximately 8 cubic feet. For more info check out the How-to's and Technical Data Sheets to the left.
Material:
Polyurethane
Number Of Parts:
Two Part
Type:
Foam
Questions & Answers about Flotation Foam:
2013-05-20A shopper asked: I am replacing the floor and stringers on my boat. I need to install neew foam. The size of the area is (2) triangles and the right angle dimensions are 9" tall by 24" across. How much do I need?
Thanks,
Scott
2013-05-07KATHLEEN LOOMIS asked: How many cubic feet does one quart make?
+Expand Answers
2013-05-09ROBERT HENNE JR: Sorry. I don't know.
2013-03-24A shopper asked: How much does it fill?
+Expand Answers
2013-03-26JAMES BALDWIN: My 3 year old memory can supply what I remember.
Carefully, read instrucations....temp will effect the pour.
If under a deck make 2 access holes. I cut 6" holes where I was to pour. And, 6" irunning downhill..........to make sure it fill and flows properly. Mostly the 2nd hole is to allow the air which is being displaced has somewhere to exit. Also, the 2nd hole was to allow topoff.
Assemble the mixing bucket....I used 5gal bucket.........for the gal at a time that I mixed.........+ mixing paddle for drill + wear gloves and chemical 3M canister masks.
I am thinking that the qt size foams filled at least a 5gal bucket sized area after pouring. And, the 1gal sized kit filled at least 5gal area at least 3-4 times.
Do first thing in morning. Too hot a day flashes the mix too fast and will not flow properly. But, if the area is an open bay just pour and you can push the mix around to fill the open void.
Hope this helps.
Jim
2013-03-26OMAR VAZQUEZ: I did this jod 2 years ago. Sorry but I dont recall. I suggest you buy the small container to get a feeling on how much you need. Then buy the big the 2 gallos mix if you need. I used one 2 gallon mix, and two 2 quarts mix to fill approx 1000 cubic inches.
2013-03-27LARRY GOBY: I used flotation foam in the bottom of a bass boat and used about 3 gallons to fill 4.5 inches deep X 6 feet wide and 12 feet long. The formula is based on the displacement of water. A gallon of foam will displace approx 450 pounds of water. Water weighs 64 pounds per cubic foot and approx 8 pounds per gallon. Good luck. Remember that working time is short and it is not good for filling closed areas.
2013-01-07KEN RIDDLE asked: I have a 16' aluminium boat 6 wide, I want to fill the bottom with about 2 inches of Flotation Foam. I can only get to about 10 ft for the floor decking.
So I want to fill 10 ft x 6 ft by 2inches of foam.
How much product would i need? Do you have to prime the bottom of the floor
before adding the foam? What is required to get the foam to stick to the aluminium floor?
Thanks
Ken R
+Expand Answers
2013-01-07TIM SMITH: The space I filled with foam was about 11' by eight inches to an average depth of 4". I used approximately 3 quarts on this job.
Sound like 2 quarts might do it.
As for adhesion to aluminum, I think I might spray or brush in a layer of epoxy resin just to be safe, though I think this stuff sticks to almost anything. Hope this helps.
Tim S
2013-01-07EARNEST BOTTOMS: foam is very heat sensitive. the amount you will need depends on the temperature you plan to use it at. I dont even try to foam below 80 degrees and even then i heat part a and b up to about 120.0 also preheat the part you plan to foam if it below 80. I would think that a gallon should do the job. it will adhere to the wood and aluminum without doubt. after it cures to remove you will need a flat pry bar or some type of flat chisel. so dont worry about it sticking. The real question is are you going to fasten the plywood down prior to foaming. hope this helps. Ernie at Ernie's fiberglass boat repair.
2013-01-08LYNN CLARK: A quart kit shows that it would cover 2 cubic ft (13824 cubic inches). Your space is 17280 cubic inches so it would require 2 quart kits. If your work space is less than 80 degrees, you won't get as much expansion. The foam will expand up and out. If you need to maintain a 2" thickness, you will need to restrict it. If you put too much mix into a restricted area, you can cause the aluminum to bow under the pressure. I had painted the inside of the boat and adhesion was not a problem. I don't believe that it would be necessary if the bottom is wiped down, clean and dry. I used a solo red cup to mix and pour - seemed to be the right size to handle at one time. Just use a new cup each batch.
2013-01-08JEFFREY WOOD: Ken,
I used the two part foam a couple of years ago to replace the "water-logged" foam my boat's previous owner removed. I needed only one gallon to fill an 18inch by 6.5 foot long section about 4inches deep. I suspect you will need two gallons. My suggestion would be to work in small batches. Like any two part mix I have ever used the greater the quantity you mix at once the faster it wants to set. This caused me problems. It sets faster than you think.
I would not worry about priming as long as the aluminum you want it to stick to is clean. I had more problems getting it off what I did not want it on than the other way around. Think tar or epoxy. This stuff holds with tenacity. Good luck- Jeff W
2013-01-08JAY SCHELL: I used this foam under the deck of a fiberglass ski boat. The dimensions of the void I was filling is about 8ft long by 3 foot wide and about 4 inches deep. I used about a gallon of product. I found this foam stuck to any surface without priming.
2013-01-08ROBERT HENNE JR: I don' think this product would work for what you want. I used it to fill a void. Good luck
2013-02-23ROBERT HOLMSTROM: Hey Ken,
To answer your question about how much foam will be required, the expansion of the foam is very dependant on the temp of the boat and air when the foam is mixed and applied...the temp should be between 80 and 90 degrees to get the most expansion. The foam will stick to any grease free surface. Make sure the plywood is secured in place before adding the foam, given that the foam has expansion pressure and will lift the plywood if it is not held in place. Given the area you have described, the (2) quart size will work fine, when you add the foam, I would stand the boat up on the transom and pour from the bow, then while working quickly, lower the bow and roll the boat from side to side, taking no more than 1 minute total, then let it set and watch the foam expand. Do not further move the boat until the foam has completely dried, at which time you can easily trim any expanded foam. Great product if used properly.
2012-12-31A shopper asked: I have an area 8' x5' about 10"any cans would I need?
2012-09-29JOE THREE asked: I've got a lightweight custom made fiberglass kayak with a very thin fiberglass skin, I'd like to pour this into each end for boyancy, would you see any problems doing this? I'd stand the kayak upright and pour into the end, it should allow for expansion upward without side pressure...right?
+Expand Answers
2012-10-02PHILIP MATTHEIS: I used this product to fill in the middle of a paddle boat (replacing soggy styrofoam). Since it sets up quickly, I added the mix in several small batches, which passively filled the space available. The resulting layers seemed to bond well.
At the end as space was more restricted, there did not appear to be any side pressure, just a little more density to the final production. If you are simply filling space without a restricting compartment, there should be no problem with side pressure, though you might consider a loosely covering sheet of hard plastic to serve as protecting surface?
2012-10-02Joe Three: Thanks for the reply, I'm going to give this a try.
2012-10-02ROGER SCHWARZ: Might work. I used it on a 19 foot fiberglass boat with a solid hull and floor. I put around six four inch holes in the floor about 2.5 feet apart, and the foam expanded to fill the floor and through the holes as planned. The expansion is significant, you will need to experiment with a small batch. Again make sure to leave plenty of holes for expansion, and maybe even consider mixing and pouring in steps. If the fiberglass wall is too thin to channel the mixture excess out the holes, the foam expansion will easily break a thin skin. Also be aware the product is messy, so plan ahead with disposable gloves and containers...and wear a mask or work in open air.
2012-10-02JAMES GRIMES: This will work well for buoyancy. The foam will expand in the path of least resistance. If you pour a large amount at a time, that path of least resistance will be to push the fiberglass out. This is because the 'skin' will cure first, and resist the expansion of the core of the foam. Pour mulitiple small batches (4oz) at a time in layers to prevent damaging your work.
2012-10-02EARNEST BOTTOMS: be very carefull foam can expand and rupture the glass . I have seen this on floors in boats where the glass is much thicker. proceed with caution;
2012-10-02JAMES GATTO: Yes Joe, that will work just make your calculations so you don't over pour also be prepared to work very fast and its messy
2012-10-02DANIEL HAMEL: As long as there is an outlet. It expands fast especially if its warm out.
2012-10-03OMAR VAZQUEZ: Joe
I think is possible but is important you Make sure you can estime the exact volume and that there is a hole big enough to relief the pressure.
The foam has a lot of pressure when expanding. It can bow or crack open the fiberglass. If u have any leak it will try to expand that way too.
To canculate the volume you can use water. Assuming each cavities are sealed (no leaks) you can Use a 5 gallon bucket full of warer and weight it before pouring. Pour water in the cavity until is full then re-weight the remaining warer in the bucket. With the difference in weight you can calculate the cubic inches of water in the cavity (1 pound = 27.68 cubic inches) now u know the volume in the cavity.
Get a mixing container and fill it with water to the top calculate the volume same way you calculated the cavities in the Kayak. Now using the same container Prepare a little of the mix ( for example 2 oz of each chemical) to see how much is grows. After it drys Fill the container to the top with water. Remove the water and weight it separete but simillar container. With the difference in weight between one and another you can calculate the volume growth of the foam for 2:2 oz of chemicals.
For example if 2:2 = 10 cubic inch
You may need a mix of approx 5.7:5.7 oz of chemical to fill out a volume of 27.68 cubic inches.
Also make sure all parts that are suppose to be secured (not moving) are firm and secure. Otherwise te pressure will pull them out of place.
I hope this makes sense to you. Good luck.
BTW: the product is very good when used properly.
2012-10-03NEAL GANSER: Not a problem Joe. You have given the foam an area to expand without undue pressure on the boat skin. ng
2012-10-04JAMES BALDWIN: As I remember the slight side pressure is what assists the foam to expand upwards.
Just a small suggestion, have an inspection port to monitor any water vapor that might accumulate.
Did you build with epoxy? Then this is very important! Water vapor and epoxy do not mix.
I build a 20' tolman Skiff using West Epoxy. I have to open all inspection areas to alleviate the vapor. But, I would always use epoxy.
The slight side pressure will not force the kayak sides out of alignment, I don't believe.
Good luck,,,,,,,,,,,,,,,Jim
2012-10-04Paul Conrads: Jim - I used the foam to replace soggy foam under a floor on a 16 ft High Tide. After laying new plywood I made sure to cut expansion hole to control the excess foam and it worked well. Pouring small batches with the kayak standing vertically I think should work well. Good luck! Paul
2012-09-17STEVE S asked: Is the FIB-5614 Gallon item actually 2 gallons or just 2 2-quarts that equal 1 gallon?
+Expand Answers
2012-09-17JASON MACARTHUR: The foam comes in 2-1 gallon containers to equal 2 gallons total.
2012-05-23FRED PERALES asked: i have a 21 foot flats boat that i am rebuilding, i am tryn to figure out the amount of foam i would need to fill the cavity underneth the deck. my measurments are, 4 sections that are 15'L*16"W*10"H and there are three stringers that split up these cavitys?
+Expand Answers
2012-05-23LYNN CLARK: I found that if the foam was mixed at recommended temps, the yield was as described. 8 cubic feet/gallon. With your measurements, it would require 8 gallons assuming you are to foam up to the floor. That would give you up to 4000lb of flotation which is probably far more than you need. It might be better to figure the weight of the boat sitting on the water and foam based on weight to float it incase of an accident. If you are going to foam the cavities full, you will need to make some kind cover to keep the foam from expanding over the top of the stringers. I used some plywood covered with poly to make it easy to remove. I have also seen people use some pieces of closed cell house foundation foam as a filler to take up space as it is much cheaper than the expanding foam. The trade off is that the foam boards tend to be noisey unless encapsulated in the expanding foam. Good Luck.
2012-05-23WILLIAM DOYLE: Fred
My understanding is that the expansion is 10-12 times the volume but varies with temperature. I have bought the goods but have not used it yet.
2012-05-23fred perales: lynn is that 8 gallons total mixed or 8 gallons of each part?
2012-05-24ROBERT HENNE JR: My best suggestion is to start with small batches and keep adding till you get the right amount. i poured on top of a cured batch. You can cut the foam with a saw if it gets too high. Good luck
2012-05-24OMAR VAZQUEZ: My cubic foot was 2 long cavities of 8' L x 16" W x 9" H divided by 2 because of the triangular shape of the hull (13,824 sq ft) and I used 1 unit of the 2 Gallon Flotation Foam. I use it all, nothing left on the cans. Just using your dimensions you have 28,800 sq ft. You would need double the quantity for your project (2 units of 2 gallons). When working on it install the desk and 1/2" hole in the deck pour the foam and wait until it drys. Then layout you fibreglass in top of the wood deck. Good luck.
2012-05-14CARLOS OLIVEIRA asked: Can it be submerged in salt water for indefinite period?
+Expand Answers
2012-05-14JAMES PHELPS: I took it out of my row boat because it weighed too much. I. Build air tight compartments.
2012-05-15JAMES BALDWIN: Carlos, this foam was used as per recommendation..filling voids between the stringer and the hull, below decks. But, I would not hesitate full immersion in salt/fresh water full time. And, it expands very well. But, you have to have the area to be filled, ready!
Large hole into which to pour the product after mixture as per instructions. And, an exit hole so product will push the air which is in the area to be filled, out of the exit hole. And, very careful about the temps of the boat void and ambient temp. during mixing and pouring of product.
Too cold and product will not expand properly. Too hot and product will not expand properly.
Hope this helps you.
Jim
2012-05-15JIM COOK: Hey Carlos, I built a small, classic duck hunting boat called a barnagat bay seek box. It is never used in saltwater, however I have filled the boat with water and Gear, only to find that I could not sink the boat... The foam works great in fresh water
2012-05-16ROBERT HOLMSTROM: Carlos,
The foam will eventually absorb water and should be used in a sealed compartment. It is a great product when used correctly. It expands best when the air temp is above 80 degrees.
2012-05-14A shopper asked: If you lined the cavity to be filled with 6 mil plastic sheeting before pouring in the foam, would you be able to lift the foam out once it has expanded to fill the cavity?
+Expand Answers
2012-05-14BRIAN WINKLER: It really just depends on how "over-full" you filled it and how smooth the sides of your cavity are. It will expand and press out against the sides of the cavity, but the foam can be lifted out of your contraption if you want, and the geometry of the cavity doesn't prohibit it. If it is tight, you can saw or cut it out afterwards.
2012-05-14BILL SMITH: You would have to use a release agent and depending on the angles, it would be hard to pull in one piece. I have not tried to pull foam out in one piece.
2012-05-16MITCHELL PEZANOSKI: Yes. You should be able to lift the foam out as long as there are no protrusions in the cavity you are filling and there is nothing in the way above the foam.
In searching for this foam I found Jamestown to be lower in pricing for a larger amount of product. All other companies who offered this same foam were higher in price for a less amount...Read complete review
In searching for this foam I found Jamestown to be lower in pricing for a larger amount of product. All other companies who offered this same foam were higher in price for a less amount. [...] There was no direction in using the product so I contacted Jamestown who walked me thru step by step. Excellent customer service and I would not only recommend this product but recommend Jamestown Distributors when purchasing anything for you boating needs. I purchased a boat that had major water damage so I ripped out everything including the rooted wood and foam. I re-fliberglass and left holes to pour this foam into. The reason I am writing a blog because the directions: I used 8oz cups - 1 for part A and 1 for part b - stirred for 30 seconds mixing well - poured in and foam expanded to a very hard shell - worked great!
VS
Most Liked Negative Review
Flotation Foam
Product was great! The package was dented bad and was not properly packaged. Jamestown also added a $16.00 charge for handling that was not in the final price when I checked out (beware) ...Read complete review
Product was great! The package was dented bad and was not properly packaged. Jamestown also added a $16.00 charge for handling that was not in the final price when I checked out (beware) I will not order from this place again. But the product worked as sold.
Comments about Jamestown Distributors Flotation Foam:
Pour in place foam is great for boat flotation when restoring waterlogged foam. It expands quickly and is relatively easy to work. Expansion is sometimmes hard to contain. I just let it grow and then cut off the excess.
Work quickly after getting prepared ( especially in warm weather).
Was this a gift?:
No
7/16/2012
5.0
Flotation Foam
By Betty Anne Builder
from Ithaca, NY
About Me Casual/ Recreational
Pros
Easy to Use
Cons
Messy
Best Uses
Comments about Jamestown Distributors Flotation Foam:
Used to fill voids under deck.
Was this a gift?:
No
6/11/2012
2.0
Flotation Foam
By eaglewings
from ga
About Me Casual/ Recreational
Pros
Easy to Use
Cons
Best Uses
Outdoor
Comments about Jamestown Distributors Flotation Foam:
Product was great! The package was dented bad and was not properly packaged. Jamestown also added a $16.00 charge for handling that was not in the final price when I checked out (beware) I will not order from this place again. But the product worked as sold.
Was this a gift?:
No
5/15/2012
5.0
used for flotation fo my sit in kayak
By stringbean
from capecod
About Me Casual/ Recreational
Pros
Easy to Use
Protects Well
Visually Pleasing
Weather Proof
Cons
Best Uses
Outdoor
Comments about Jamestown Distributors Flotation Foam:
I used this to fill the void in the bow of my sit in kayak. I hung the kayak upside down and poured the product in untill i was satisfied.the produt set up fast.a year later i filled the kayak with water and stayed afloat just fine. Good product.Just have help mixing it and timing it, it sets up very fast.
Was this a gift?:
No
10/25/2011
5.0
Great Product
By Stringbean
from Cape Cod
About Me Casual/ Recreational
Pros
Easy to Use
Protects Well
Visually Pleasing
Weather Proof
Cons
Best Uses
Outdoor
Comments about Jamestown Distributors Flotation Foam:
I used this product to fill in the void in the bow of my kayak. I hung the 12' kayak from a tree branch so i could pour it in to the void in the bow. I mixed it in small batches in a paper coffee cups and gave it about 10 min to set up.You have to time it carefully it set verry fast. I rolled the kayak about 3 weeks ago and it held up fine. It made it easier to roll it back over and empty the water out so i could climb back in. Great stuff, I recomend it for flotation in any sit inside kayak or small boat bow.
Was this a gift?:
No
5/29/2011
5.0
A little goes a long way
By Bill
from South Mills, NC
About Me Casual/ Recreational
Pros
Easy to Use
Good Expansion for voids
Cons
No instructions
Best Uses
Added floatation
Add Rigidness strength
Void filling
Comments about Jamestown Distributors Flotation Foam:
Did exactly what I needed, replaced foam floation that had to be removed to conduct repair. A little goes a long way, one issue with this product is determining how much is needed to fill a void. if working in small areas you needed to do in small batches.
Was this a gift?:
No
10/13/2010
4.0
Mix, Mix ,Mix makes it work
By Sunray 180
from Leesburg, Ohio
About Me Advanced
Pros
Easy to Use
Not Rocket Science
Cons
A Little Messy
Best Uses
Boat Floatationstructure
Indoor
Comments about Jamestown Distributors Flotation Foam:
Easy to use. Accurate 1:1 ratio mix is a must. Mix it well, I mean real well, vigorously. The better you mix the two parts, the better it will expand. I mixed until it was about to expand out of the container, then poured. I used it to replace the foam in the under floor side structure of my 18 ft boat. used 2ea. gallon kits. I covered precut plywood boards w/6 mil plastic, poured in the void, and then and placed the boards over the void area. I sat on the boards, about 15 min. until the foam was fully expanded and hard. Pulled the boards up, Plastic will release from the foam. It filled the void and will provide support for the floor. Safety: This stuff gets pretty hot when expanding. Remember to protect your eyes, skin and hair (I speak from experience). This stuff will not come off easily when dry. Have Fun!
Was this a gift?:
No
7/26/2010
4.0
The Blob
By South Jersey Speed Skiffs LLC.
from Southern New Jersey
About Me Advanced
Pros
Easy to Use
Cons
Messy
Best Uses
Comments about Jamestown Distributors Flotation Foam:
Product worked as described. It sorta grew into the Blob, but did what it was intended to do. Wear gloves if you need to get into a small place to pour it out.
5/24/2010
5.0
Exactly what I was looking for...
By Dale
from Owatonna, Minnesota
About Me Casual/ Recreational
Pros
Easy to Use
Protects Well
Visually Pleasing
Cons
Best Uses
Comments about Jamestown Distributors Flotation Foam:
The only directions for use I received was in this section from other users. But for that, the 2-part foam was EXACTLY what I was looking for, easy to use, not messy if you're careful, and filled the void in my boat perfectly. The 2 quarts filled expanded to approximately 18"x18", and I have a bit left over. Make sure you mix it well... expansion is slow and takes a bit of time, its not immediate. The more you mix it, the better it looks and denser the final stage.
4/28/2010
4.0
Smaller boats and craft
By Matt
from Newberry, MI
About Me Casual/ Recreational
Pros
Easy to Use
Cons
Messy
Best Uses
Replacement floatation
Comments about Jamestown Distributors Flotation Foam:
This product is very easy to use, once you get the hang of it. I replaced the foam in the bottom of my 16 foot aluminum boat with this product. It can be very messy, it does find its way to the lowest point in the boat. I would recommend being careful with this product until you know how far it will expand. I would pre-cut the flooring for the boat before using this product so that you can place the new flooring down as you poor the product. It will hold up the flooring if the floor is not secured before it finishes expanding.
Price Match Promise:
If you find a lower delivered price on a new identical item in stock and available for purchase from an authorized U.S. merchant.
- email us at pricematch@jamestowndistributors.com. This offer does not include special coupons or other promotional offers.
Special order items are not stocked and are ordered direct from the manufacturer. They are non-returnable, may take 2-4 weeks, price and shipping charges subject to change.
Checkout: 
Item(s) in your cart:
The item was added to your wishlist.
