Starting From $78.00

AeroMarine Products expanding 2 part pour-in place foam is a closed cell, rigid urethane foam. Our closed cell pour foam works very well as a flotation foam in building and/or repairing boats, barges, docks, canoes, kayaks, pontoons, etc. Additionally, AeroMarine Products’ closed cell pour foam is good for insulating buildings, pools, hot tubs and spas.

Do NOT use our pour foam on inflatables and/or canvas.

**This is a closed cell pour foam only. It is NOT a sprayable foam!

Always wear a respirator or self-contained breathing apparatus when working with pour foam.

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FAQs

Q. I’m making a pontoon boat from empty 55 gallon drums. How much floatation foam do I need?

A. Each 55 gallon drum requires about 8 cubic feet of urethane foam. Since each cubic foot weighs two pounds, you will need 16 pounds of foam per empty drum. Therefore, it will require about one gallon kit (makes two gallons) per drum.

Q. Can I brush or spray the liquid foam onto a vertical wall to provide a uniform thickness of insulation foam?

A. No, the liquid foam will just run to the floor, then rise. You will have a big blob of foam on the floor. It is NOT a sprayable foam.

Q. Is this flotation foam compatible with styrofoam?

A. Yes. It will not “eat” or dissolve styrofoam. If you have a large cavity to fill, you can put some chunks of styrofoam in the cavity to save foam.

Q. How do I know how much foam I need to float my boat?

A. Get your calculator ready, you will need it. A cubic foot of polyurethane will float about 60 pounds of “dead weight”. The wood parts of your boat will probably float, so you don’t need flotation foam to offset that weight. The fiberglass parts of your boat will barely sink, so you really don’t need much foam to offset the fiberglass- maybe one cubic foot of foam per two hundred pounds (or more) of fiberglass hull. The metal parts of your boat are what you really need to account for. A small (4-6hp) outboard may weigh 45-55 pounds. A 50hp outboard will weigh about 200 pounds.

So a 16 foot fiberglass skiff with a 50 horse outboard will need about six cubic feet of urethane foam to keep it afloat. A 12 foot plastic kayak will only need one cubic foot. A 30 foot fiberglass sailing sloop with a diesel engine and lead keel would need about 150 cubic feet of foam. Actually, very few 30 foot keelboats have positive foam flotation, but it’s not out of the question- especially when you consider all of the air pockets that would exist, as well as all of the wood interior components that provide some positive flotation.

Q. Do I need to paint or fiberglass over the floatation foam?

A. You probably should. Polyurethane will absorb a small amount of water, because some of the the cells are open (95%+ are closed, though). Painting or glassing will seal the foam and prevent any water absorption. However, it really shouldn’t be necessary unless the foam is constantly immersed in water, such as in a boat with bilges that are always wet. The foam is not UV resistant, so it must be painted if exposed to sunlight.

Q. Is the polyurethane foam resistant to fuel, oil, and solvents?
A. Mostly yes. It is resistant to splashes of gasoline and diesel fuel, although it will absorb a small amount because no pourable foam can be guaranteed to be 100% closed cell. A strong solvent such as acetone or toluene would eventually break the foam down, but it would take a long time.

Q. What is the maximum exothermic temperature that cured polyurethane foam can reach?

A. 250 degrees F.

Q. What is the maximum surface temperature that cured polyurethane foam can withstand before it begins degrading?

A. 200 degrees F.  The foam does not ignite. Under high heat and direct flame, it will char like wood. The foam will break down with continued exposure to excessive heat/flame.  The damaged area can be repaired by removing the damaged portion and pouring new foam into the void.

 

Quick Comparison

Settings8# Density Foam removeOne-to-One Silicone Mold Making Rubber - 1 Quart removeAM 150 Silicone Potting and Encapsulation Rubber removeAeroMarine Concrete Molding and Stamping Rubber removeAeroMarine 5 Minute Epoxy remove2lb. Flotation and Insulation Foam - 10 Gallon Kit remove
Image75a urethane elastomer parts a and b with mold release
SKUAM325AM7865AM435AM332AM275AM9020
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PriceStarting From $78.00$59.00Starting From $135.00Starting From $75.00Starting From $77.00$615.00
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Estimated delivery between 2022/12/07 - 2022/12/09

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Estimated delivery between 2022/12/07 - 2022/12/09

Estimated delivery between 2022/12/07 - 2022/12/09

Estimated delivery between 2022/12/07 - 2022/12/09

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DescriptionQuadruple Density Foam (8# per cubic foot) This expanding boat foam is closed cell, rigid foam.It doesn't have quite as good properties as AM 128 shown above. However, it is ideal for most mold making applications. AM 125 silicone mold making rubber cures in less than two hours. This molding RTV rubber is great for first time mold makers. PLEASE NOTE: Do NOT expose AM 125 to any moisture; moisture ruins it! Re-cap the containers immediately after pouring. Store AM 125 at 72F/room temperature. AM125 has a 60 day shelf life once you open the containers.AeroMarine Products AM 150 Silicone Potting and Encapsulation Rubber is a two component, room temperature addition cure silicone material. The cured rubber is flame resistant and has excellent mechanical properties.AeroMarine Concrete Molding and Stamping Rubber This is a tough black rubber similar in feel to a car tire. It is used not only for concrete or cement stamping mold, but also for making hard durable rubber parts for machinery or automotive applications.AeroMarine's 5 Minute Epoxy is a fast setting adhesive for rapid assembly or repairs. Our 5 Minute Epoxy is a 2 part epoxy glue. It works well as an industrial epoxy adhesive.
  • AeroMarine Products 2# density polyurethane pour foam.
  • Closed-cell: Does not react to splashes of oil or gasoline and does not absorb water.
  • Designed for positive flotation, cavity and void fills, and insulation.
  • 10 gallon kit; includes one 5 gallon bucket each of Part A and Part B.
  • 2 lbs. per cubic foot density.
  • Yields 40 cubic feet.
ContentAeroMarine Products expanding 2 part pour-in place foam is a closed cell, rigid urethane foam. Our closed cell pour foam works very well as a flotation foam in building and/or repairing boats, barges, docks, canoes, kayaks, pontoons, etc. Additionally, AeroMarine Products' closed cell pour foam is good for insulating buildings, pools, hot tubs and spas. Do NOT use our pour foam on inflatables and/or canvas. **This is a closed cell pour foam only. It is NOT a sprayable foam! Always wear a respirator or self-contained breathing apparatus when working with pour foam.This is a simple, 1:1 mix Silicone Mold Making RTV designed for beginners to mold making.  AM 125  has a mix ratio of 1:1 by volume and is sold by volume, not weight.Features: Simple one to one mix ratio Low viscosity Wide operating temperature range Flame resistant Fast demold time Excellent dimensional stability DO NOT USE ON HUMAN OR ANIMAL SKIN!
300/11 EpoxyUrethane 75AAM 150 Silicone
Color:Clear Amber/BlackBlackBlack
Flexibility:Very hard (85 shore D)Hard rubber (75 shore A)Medium rubber (50 shore A)
Mix Ratio:1:1 by volume1:1 by volume1:1 by volume
Pot Life:45-60 minutes5 minutes45 minutes
Cure Time:24 hours12 hours12 hours
Viscosity:3000 cps850 cps3000 cps
Shrinkage:NilNilNil
Dielectric strength:450 volts per mil (.001")450 volts per mil (.001")450 volts per mil (.001")
Years in use:1078
This is a tough black rubber similar in feel to a car tire. It is used not only for concrete or cement stamping mold, but also for making hard durable rubber parts for machinery or automotive applications. ** Please note: If you are using AeroMarine Products Concrete Molding and Stamping Rubber for making concrete molds and/or stamps, it works for basic concrete or cement shapes without undercuts or fine detail.** For fine detail concrete or cement molds, please use either our"Mold Making Latex" or our"AM 128 Brushable RTV Silicone" This 1:1 by volume mix ratio polyurethane rubber is used for making molds for concrete and/or cement. The smallest container in the picture contains a mold release which is included with each small kit. **You must mix, apply and cure AeroMarine Products Concrete Molding and Stamping Rubber in a humidity-controlled environment.

Instructions for AeroMarine Products' Concrete Molding and Stamping Rubber 75A Urethane

Use between 65° and 75°F in a humidity-controlled environment. AeroMarine Products Concrete Molding and Stamping Rubber 75A Urethane is moisture-sensitive. Use only clean plastic or metal mixing utensils and containers. Do not use paper or wood. Re-cap the bottles immediately after pouring the amount you are going to use. Shake both A and B bottles very vigorously to disperse the product about 30 minutes before pouring. Measure out A and B in 1:1 by volume ratio. Use our Double Mix and Pour method: Pour into a clean container. Mix well for 60 seconds. Do not scrape the sides of the container because it will contaminate your mix ratio. Pour into a second clean mixing container and mix again thoroughly for 60 seconds. Pour within 5 minutes of final mixing. If you are pouring layers of Concrete Stamping Rubber 75A Urethane, let each layer fully cure before pouring subsequent layers. 75A Urethane bonds very well to itself.

You must use a mold release when pouring AeroMarine's Concrete Molding and Stamping Rubber 75A Urethane against another surface. AeroMarine Products' Mold Release (sold with the smaller sized kits) is the standard release for this product. To release the concrete easily from the mold, you can also use motor oil or castor oil.

AeroMarine concrete molding and stamping rubber is a tough rubber that resembles a rubber shoe heel. AeroMarine's Cement Molding and Stamping Rubber also an excellent choice for making clutch and brake pedals, motor mounts, or door trim rubber for automobiles. DO NOT USE ON HUMAN OR ANIMAL SKIN!
Color: Clear Yellow when cured Viscosity: Very Thick Liquid Work Life: 5 Minutes Cure Time: 60 minutes at 77F View Technical Data Sheet

Features

  • Low viscosity
  • Convenient volumetric mix ratio (1:1)
  • Rapid set time
  • Low odor
  • Excellent base for epoxy/polyester resins
  • Readily accepts paints, stains and finishes
  • Approvable under U.S. Coast Guard Regulation # 33 CFR 183.114

Physical Properties:

  • Parallel to Rise Compressive Strength: 40 psi
  • Tensile Strength: 30 psi
  • Shear Strength: 30 psi
  • Flexural Strength: 50 psi

Room Temperature Features of Resultant Product

  • Cured Density: 2 lbs/ cubic foot
  • Compressive strength: 40 psi
  • K-factor: 0.22
  • R- Value: 7 per inch
Weight040110
DimensionsN/AN/AN/AN/AN/AN/A
Additional information
WeightN/A
Weight4 lbs
WeightN/A
WeightN/A
WeightN/A
Weight110 lbs