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Choosing the Correct Spray Foam for Your Project

Safety, Storage and Handling Guidelines

General Touch 'n Foam Application


Fire Safety

Energy Tax Credit and Buy American Provision


Choosing the Correct Spray Foam for Your Project

What is a One-Component Spray Polyurethane Foam Sealant?

One-component spray polyurethane foam (SPF) is dispensed as a frothy liquid which expands and moisture-cures into a solid foam insulation and sealant. One-component foam is available in convenient aerosol cans and portable cylinders.

One-component foam is used to fill and seal small cracks and voids such as around door and window frames, sill plates, electrical devices where air leakage and energy loss can occur. Formulations are available for general use and specific applications such as sealing windows and doors, fire blocking, and construction adhesive. All Touch ‘n Foam one component polyurethane foam products are rated ASTM E84 Class A fire resistant. Consult with local building codes for guidance on acceptable uses.

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What is a Two-Component Spray Polyurethane Foam Sealant?

Touch ‘n Foam Pro two-component low-pressure spray polyurethane Foam Kits combine A-component and B-component to produce a frothy mixture that expands rapidly and chemically-cures to form solid foam. A-component (“Iso”, “MDI”) and B-component (“Polyol”) are delivered from portable cylinders through hoses to a spray applicator gun. The applicator mixes the components and creates the spray pattern to control the application of foam to vertical or horizontal surfaces.

Touch ‘n Foam Pro Spray Foam Kits are an excellent choice for insulating and air sealing small to mid-sized residential, commercial, industrial, and agricultural construction projects. Touch ‘n Foam Pro spray foam insulation is especially effective in air-sealing and weatherizing older homes that have many energy wasting cracks, gaps and penetrations that allow air to leak in and out of the house. It can be used to air seal behind fiberglass, cellulose and other permeable insulation products (“flash and batt”). Touch ‘n Foam two-component systems are an efficient way to apply spray foam to seal and insulate critical places in the building envelope such as rim joists and around large penetrations. Foam Kits are a convenient way to make small repairs of existing spray foam installations, including wall insulation and roofing systems.

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What are some common Touch 'n Foam applications?

  • Home weatherization
  • Commercial construction
  • Industrial insulation and void filling
  • Agricultural buildings
  • Structural Insulated Panel Systems (SIPS)
  • Cold storage
  • Roofing maintenance and repair
  • Storage tanks
  • Pipe insulation
  • Insulated transportation repair and maintenance
  • Specialty vehicles
  • HVAC systems

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Safety, Storage and Handling Guidelines

What are some general guidelines for using and storing Touch 'n Foam products?

  • Refer to product SDS and Safe Use, Storage, and Handling for Low-Pressure Spray Foam Products for detailed safety guidance prior to use. More information regarding safe use and handling of Low-Pressure Spray Polyurethane Foams and Sealants is available at www.spraypolyurethane.org.
  • Use products only in a well-ventilated area. Avoid breathing vapors.
  • For two-component spray foams, wear an organic vapor cartridge respirator.
  • Wear personal protective equipment (PPE): safety glasses or goggles, chemical resistant gloves and clothing to protect from skin exposure. Avoid skin contact.
  • Do not allow others without the proper PPE into the immediate vicinity of the spray application.
  • Ventilate area during application and for at least one hour after two-component foam is applied.
  • Keep out of reach of children.
  • Store products in a well-ventilated dry location between 60°-90°F (16°-32°C).
  • Do not expose products to open flames or temperatures above 120°F (49°C).
  • Do not expose finished foam product to open flames.
  • Follow recommended pressure relief instructions for empty containers prior to disposal.

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How do I remove wet foam from surfaces?
Use Touch ‘n Foam Cleaner or acetone and a clean cloth or paper towel. Do Not Apply Touch ‘n Foam Cleaner or acetone to any finished surface. Always test a small inconspicuous area to ensure Touch ‘n Foam Cleaner or acetone will not damage the surface. DO NOT USE SOLVENTS TO REMOVE FOAM FROM SKIN. 

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How do I remove wet or cured foam from my hands, skin or hair?
Polyurethane foam has extraordinary adhesive strength and is very difficult to remove. It is important to wear chemical resistant gloves and protective clothing to avoid skin contact during application. If foam does come in contact with skin, immediately wipe off as much of the liquid as possible and wash well with and soap and water. Generously apply moisturizing lotion. Do not use solvent to try to remove the foam. Residual foam on the skin will gradually wear off over time. If a rash or persistent irritation develops, consult a physician.

Just as with skin exposure, foam cannot be completely removed from hair. It may be necessary to cut off foam encrusted hair. If a rash or persistent irritation of the scalp develops, consult a physician.

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How should unopened foam containers be stored?

Store Touch ‘n Foam two-component foam systems in a dry, well-ventilated area between 60°-90° F (16°-32°C).

  • Storage above 120°F (49°C) may result in chemical leakage due to excessive pressures. Do not store near open flames or other sources of heat or ignition. Pressurized cylinders have a safety rupture disk which will relieve excessive pressure; however, chemical leakage will occur when the disk ruptures.
  • Storage below 60°F (16°C) may result in crystallization of the liquid components and affect the quality of the finished product.

Always check the product label for application and storage temperature ranges.

Keep out of reach of children.

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General Foam Application

How much coverage will I get with a two-component foam kit?

A number on the upper right hand corner of the package front will indicate theoretical* spray foam output. A board foot is defined as 12” x 12” square by 1” thick. A System 200 Kit will provide up to 200 board feet theoretical output, a System 600 kit will provide up to 600 board feet theoretical output, etc. Reference the product Technical Data Sheet for cubic feet.

*Theoretical yield is used as an industry standard to represent the size of two-component foam kits. The calculation is based upon ideal conditions, does not include blowing agent loss, and may vary according to application method or environmental factors.

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How do I assemble my two-component Foam Kit?
Two-component foam assembly instructions

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Are Touch 'n Foam products compatible with common building materials?

Touch ‘n Foam two-component foams, when installed according to manufacturer instructions, are compatible with most common building materials. For information about compatibility with specific materials, please contact our Customer Service Department at 800-325-6180.

Examples of compatible substrates for Touch ‘n Foam polyurethane foam products include:

Plastics Elastomers / Rubber Common Materials
ABS Butyl Rubber Aluminum 
Epoxy Natural Rubber Copper
Polystyrene Neoprene Steel
Fiberglass Composites Nitrile Butadience Rubber (NBR) Wood
Polyethylene Styrene Butadiene Rubber (SBR)  
Crosslinked Polyethylene (PEX)    
Polymethylmethacrylate (PMMA)    

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What surfaces will foam stick to?

Examples of substrates to which Touch ‘n Foam two-component polyurethane foam products will adhere well are:

Plastics Elastomers / Rubber Common Materials
ABS Butyl Rubber Aluminum 
Epoxy Natural Rubber Copper
Polystyrene Neoprene Steel
Fiberglass Composites Nitrile Butadience Rubber (NBR) Wood
Polyethylene Styrene Butadiene Rubber (SBR)  
Crosslinked Polyethylene (PEX)    
Polymethylmethacrylate (PMMA)    

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What are the optimal temperatures for foam application?

For best results apply Touch ‘n Foam spray foams when surface and ambient temperatures are between 60°-90°F (16°–32°C). Chemical components must be between 70°-90°F (21°–32°C) before dispensing.

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What is the cure time for Touch 'n Foam?

Cure time is dependent upon temperature, humidity and formulation. Please check your product label or go to the product page of this website and view the product data sheet to obtain an accurate cure time. Two-component foams are tack-free and cure much more quickly than one-component foams (spray foam in a can).

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Will polyurethane foam support the growth of fungus or mold?

No. Mold and other micro-organisms require a food source, moisture and oxygen to live and grow. Since polyurethane foam is not a food source for mold and fungus, it does not support growth. However, materials adjacent to or in contact with the foam, such as wood, cellulose insulation, dry wall paper, dust and dirt may are food sources and may support growth.

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Is foam a barrier to insects and rodents?

Touch 'n Foam Pro's polyurethane two-component foams do not contain chemical rodent deterrents or rodenticides.

Use of expanding polyurethane foam has been found to be an easy, means to help prevent insects and rodents from entering structures through voids, cracks and crevices.

Carefully select the appropriate foam based upon construction types and opening sizes for the area being filled. Follow all product instructions and safety guidelines.

Completely fill holes around the structure, such as in the siding close to the foundation, around cables and pipes that penetrate the structure and all openings in areas with evidence of rodents, such as gnawed items and rodent droppings. Do not overlook small holes. Some rodents, such as house mice, can squeeze through holes that are as small as ¼-inch across, according to information from the University of California's Integrated Pest Management Program.

While mice and rats can chew through polyurethane foam, this barrier will generally block mice from entering the area.

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Is foam water resistant?

Closed cell polyurethane foam resists immediate water penetration. However, foam may absorb water that is in direct contact for extended periods of time.

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What is the VOC (Volatile Organic Compound) content of Touch ‘n Foam products?

All of Touch ‘n Foam's one-component foam sealant formulations have less than 250 grams / liter VOC’s. All contain low VOC's.

The VOC content of Touch ‘n Foam products is given in section 9 of the Safety Data Sheet (SDS).

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Do Touch 'n Foam polyurethane foams reduce sound and noise transmission?

Spray foam can be used to reduce the transmission of sound by sealing gaps and cracks with one-component spray foam. Two-component spray foam can be used to fill larger spaces, such as between wall studs or floor and ceiling joists. Touch ‘n Foam two-component spray foams have been tested for sound control characteristics. The below represent the most common ASTM test procedures referenced within our industry.

  • ASTM E90 - 09 Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements, commonly referred to as STC or Sound Transmission Class. This standard evaluates the amount of sound loss thru a specific wall test assembly and roughly equals the decibel reduction in noise a partition can provide.
  • ASTM C423 - 09a Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method, commonly referred to as NRC or Noise Reduction Coefficient. This standard evaluates the amount of sound that a specific test assembly surface can absorb. An NRC of “0” means perfect reflection, while an NRC of “1” means perfect sound absorption.

Refer to the individual spray foam Technical Data Sheets for sound control ratings.

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Can I spray Touch 'n Foam products into an enclosed space or cavity, such as behind drywall?

No. Touch ‘n Foam systems are designed to be applied to open cavities and voids. The expansion of foam creates pressure against the surfaces of an enclosed void and may result in deformation. Drywall may bow or buckle if foam is sprayed into an enclosed wall cavity.

If high-pressure expansion is a concern, you may be interested in our No-Warp Foam Window & Door Insulating Sealant.

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Is Touch 'n Foam suitable for exterior / outside applications?

Polyurethane foam can discolor and degrade in sunlight. Touch ‘n Foam can be used for outside applications if covered with an exterior grade coating.

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Can I apply Touch 'n Foam around hot water pipes?

Touch ‘n Foam 1.75 pcf foams may be applied to hot water pipes. Do not apply to steam or other pipes that may exceed 250°F (121°C).

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What is the VOC (Volatile Organic Compound) content of Touch 'n Foam?

All Touch ‘n Foam 2-component polyurethane spray foams are low VOC.

The VOC content of Touch ‘n Foam products is given in section 9 of the Safety Data Sheet (SDS.) http://www.touch-n-foam.com/safety-data-sheets.html

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How does Touch 'n Foam save energy?

Touch ‘n Foam polyurethane foams provide a continuous insulating air barrier that helps stabilize and maintain inside temperatures by resisting heat movement and preventing moisture infiltration through air leakage.

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How much expansion should I expect with Touch 'n Foam two-component foam?

Touch ‘n Foam two-component foam, when applied according to directions, will expand varying amounts depending upon the foam’s designed density. The lower the density, more expansion will occur. 1.75 pcf SPF will expand approximately 6 – 8 times the volume of the dispensed froth.

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Can I stop spraying and re-start my Touch 'n Foam product later?

Yes. Be sure to follow the instructions below for your specific foam product. 
All recommendations are based upon foam kits being stored in a cool, well-ventilated area. Ideal storage temperature is 60°-90°F (16°-32°C). Storage above 90°F (32°C) and in high humidity will reduce storage life. Do not store at temperatures above 120°F (49°C). Do not freeze.

  • Two-Component Foam – Each type of container has a specific procedure for shutting down to help prevent issues with restarting later. Consult Technical Bulletin, "Stopping and Re-starting”.

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How do I dispose of my empty two-component foam kit?

Please refer to the Technical Bulletin "Disposal of Used Containers"

Please watch our video on chemical disposal for instructions on properly disposing of your empty, two-component product. 

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How do I read date codes on foam containers?

Please refer to document 10004, "How to read date codes on foam containers."

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Why did the spray foam not cure properly?

The most common causes of improperly cured foam are:

  • Improper ambient, chemical or substrate temperature.
  • A clogged spray foam applicator caused by attempting to spray foam with a mixing nozzle that was filled with cured or partially cured foam. Replace mixing nozzles after 30 seconds of non-use.
  • Chemical valves may not have been fully opened.
  • Chemicals were beyond expiration date.
  • Failure to flush chemical hoses with fresh chemicals weekly, in partially dispensed foam kits, leading to clogged “A” side hose.
  • Partially discharged foam kits were not used within 30 days of initial dispensing.

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Can I temporarily store a partially dispensed foam kit for use later?

Yes. Please refer to Technical Bulletin “Stop & Restart”

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Checking the Applicator for Proper Function

Good quality foam is dependent upon one-to-one ratio dispensing. The easiest way to determine that you have good ratio is to observe the stream of chemicals coming out of the applicator before they pass through the mixing nozzle.

To do this, remove the nozzle from the applicator and point into a waste container. Pull the trigger and observe the chemical streams. You should see two chemical streams flowing at equal velocity.

Know that the "A" component is light brown in color and the "B" component is white (or nearly clear) in color. Ensure you perform proper assembly according to the instructions in your kit.

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Unequal Chemical Flow from the Tanks

If you see more "A" chemical flowing than "B" chemical, your foam is probably darker in color and may have a crunchy, glassy surface. First confirm the temperature of the foam, and the ambient temperature. The canisters should be brought to a temperature between 60°-80ºF, and the ambient temperature should be between 60°-100ºF. 

If the temperature is right for dispensing, then check the "B" component tank. Be sure it is not empty. Be sure the valve is turned all the way ON. Shake the tanks vigorously and try again. 

If all of these things seem to be right, contact us for further assistance. 

If you see more "B" component than "A" component, your foam is probably whiter in color with a spongy surface texture. 

First check the temperature. Chemicals that are too warm often result in foam that is rich in "B" component. First confirm the temperature of the foam, and the ambient temperature. The canisters should be brought to a temperature between 60°-80ºF, and the ambient temperature should be between 60°-100ºF. 

If the temperature seems right, check the "A" component tank. Be sure that it is not empty. Be sure the valve is turned all the way ON. Shake the tanks vigorously and try again. 

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Foam Seems to Rise, Then "Melts"

In very extreme cases, you may dispense foam that seems to be rising, then it "melts" or reverts to a liquid after a short period of time. This would indicate that there is no "A" component flow at all. 

When was the last time you used the system? We strongly recommend that the applicator is dispensed a minimum of once every week, more often in humid climates. Failure to do so will result in a blockage on the "A" component side of the applicator. 

If there is no chemical flow, the gun/hose assembly will need to be changed. 

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Inadequate Flow from Both Tanks

Inadequate flow from both tanks indicates a general lack of pressure. The only known cause for both tanks to lose pressure is if the kit was used while lying on its side. The chemical tanks are similar to aerosol cans. If you dispense foam while they are on their side, the propellant escapes through the hose and the pressure is lost. There is no remedy for this. You can only prevent this from happening by keeping the systems in their upright position during use. 

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Temperature Issues

When dispensing polyurethane foam, three temperatures must be considered. 

First and most important is the chemical temperature. If the chemical temperature is not right, you will not dispense good quality foam. 

Ideal chemical temperature is between 60-80°F. 

Good quality foam is light beige in color. It will set up to be tack free in 30 to 45 seconds. After approximately 20 minutes, it will be firm to the touch with a consistent skin. 

If the chemicals are too cold, you will likely dispense too much "A" component. This foam will be darker in color and may have a crunchy, glassy surface texture. Warm the tanks, shake them vigorously and check the chemical flow from the face of the applicator. 

If the chemicals are too warm, you will likely dispense too much "B" component. This foam will be whiter in color and have a spongy surface texture. Cool the tanks, shake them vigorously and check the chemical flow from the face of the applicator. 

The second temperature consideration is that of the surface temperature. This is important to ensure the optimum yield and in some cases, good adhesion. 

Ideal surface temperature is between 60°-80°F. 

Surfaces that are colder will result in reduced yield. This is caused by the cold surface extracting the heat from the exothermic reaction resulting in a reduced rise, and a reduced yield. If the surface is 40°F or colder, the exothermic action may also cause condensation, which would be like spraying foam onto a wet surface, and the foam will not adhere. The only way to determine if this will happen is to do a test patch. If the foam sticks to the cold surface, spray the thinnest layer possible to simply raise the surface temperature to a level that would be closer to ideal temperatures. Allow that layer to cure. Then add the desired thickness to achieve your R-factor. 

Surfaces that are too warm may result in the foam curing too fast. This would also result in a reduced yield because the foam would not have enough time to reach the full rise before a tack free state. In addition, extreme cases may result in loss of adhesion because the foam would cure so fast it could not develop a bond to the surface before it hardened. 

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Foam Cures Very Soft

Foam that dispenses soft is usually also whiter in color. 

This is an indication that you dispensed more "B" component than "A" component. 

Refer to the section “Checking the Applicator for Proper Function” for procedures to confirm and remedy this situation. 

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Foam is Very White, Instead of Yellow

Foam that is very white in color will also have a soft surface texture. In extreme cases, it may appear to liquefy, or melt shortly after it is dispensed. This is an indication that you have dispensed more "B" chemical than "A" chemical, or in those extreme cases, no "A" chemical at all. 

Refer to the section “Checking the Applicator for Proper Function” for procedures to confirm and remedy this situation. 

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Foam is Very Dark in Color

Foam that is darker in color usually also has a crunchy or friable surface texture. This is an indication that you are dispensing more "A" component than "B" component. 

Refer to the section “Checking the Applicator for Proper Function” for procedures to confirm and remedy this situation. 

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Only One Chemical is Dispensing

To assist you in this section, identify the "A" component as being the darker brown liquid and the "B" component as being white or nearly clear in color. 

Most often when there is only one chemical coming out of the gun, it will be the "B" component, or whiter chemical. This is usually caused by not using the applicator on a regular basis, causing a blockage on the "A" side of the applicator. 

If only the "A" component is coming out, something has occurred to freeze up the "B" component side of the gun. Most likely, the applicator and hose assembly had been sitting too long between applications. 

The "A" component is very sensitive to humidity. When exposed (and it can be exposed through the hoses), it forms small dark crystals that form on the inner side of the hoses or in the small spaces between the inner workings of the dispensing applicator. 

If you use the applicator a MINIMUM of once per week (even more often in humid climates), the constant flow of chemical will eliminate these crystals from forming. If the gun and hose assembly sits for too long, these crystals form, and when you pull the trigger the next time, they either create a blockage or completely freeze up the inner works. 

To prevent this from happening, USE THE APPLICATOR AT LEAST ONCE PER WEEK (more often in humid climates). 

To be sure that both chemicals are dispensing from the applicator PRIOR to your application, always do a test shot into a waste container prior to actually dispensing the foam. If the resulting shot looks suspicious, follow the procedure in the section “Checking the Applicator for Proper Function” for procedures to confirm and remedy this situation.

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Chemical Clean Up

Evacuate and ventilate spill area, dike spill to prevent entry into water system, wear full protective equipment including respiratory equipment during clean up. 

Contain spill and collect using suitable absorbent material, such as sawdust, vermiculite, or other absorbent. Shovel into open containers and dispose as ordinary industrial waste in compliance with local regulations.

Cleanup of "B" component can be accomplished using soap and water, however, clean up the spill while it is still in the liquid state. 

Cleanup of "A" component is very tricky. Absorb the isocyanate with suitable absorbent material, such as sawdust, vermiculite, or other absorbent. Treat with neutralizing solution consisting of 90% water, 7% ammonia and 3% detergent. Add 10 parts of this neutralizing solution per part of isocyanate being cleaned up. Allow standing for 48 hours letting evolved carbon dioxide escape. Decontaminate spill area using the neutralizing solution and let stand over affected areas for at least 10 minutes. 

For a small amount of chemical, saturate a rag with dish soap and wipe it up. Be sure to do this while the chemical is still liquid. And be aware that there will most likely be a stain. 

If a transportation spill is involved, immediately call CHEM TEL, Inc., at 1-800-424-9300, within the U.S. 

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Defining Board Feet

A board foot is defined as a 12" x 12" square at 1" thick. 

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Theoretical Yield vs. Actual Yield

Actual output can be affected by a number of factors including temperature and humidity. The theoretical yield has become an industry standard for identifying certain sizes of two component kits. Theoretical yield calculations are performed in perfect laboratory conditions, without taking into account the loss of blowing agent or the variations in application methods and types. 

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Are Touch ‘n Foam Polyurethane Foams Combustible?

Yes. NEVER use spray polyurethane foam around fire or flame. All polyurethane spray foam is combustible. ALWAYS apply two-component foams in multiple, thin, sweeping layers with 1" of cured foam at a time, up to 2" maximum. Allow foam to cool between the application of additional layers. The foam chemistry generates heat during expansion, and multiple, thin layers will prevent heat build-up and reduce the potential for combustion.

Are your foams fire retardant?
All of our one-component gun and straw foams are Class 1 rated fire retardant.

Many of our two-component spray foams are Class 1 fire retardant. All two-component Class 1 fire retardant spray foams are designated by the term “FR” in their product.

Refer to product Technical Data Sheets and ICC-ES reports for detailed performance and code compliance information.

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Will “fire retardant” foams or caulks stop or prevent a home or building fire?

No. These products are intended to resist flaming, and retard the spread of flame, smoke and noxious gasses within a structure. They offer critical minutes to help enable escape.

Touch ‘n Foam offers a one-component foam called Fire Break, a flame resistant foam that protects from flame, smoke and gas in the event of a fire.

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What is the NFPA Classification for 2 Component Foams?

Convenience Products’ two-component polyurethane foam products are Level 1 aerosols per NFPA 30b, Code for the manufacture and storage of aerosol products, 2011 edition, chapter 1.7 Aerosol Classification.

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Do you have an ICC Evaluation Report for Touch 'n Foam products?
Yes. Information is available here

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Do Touch 'n Foam products qualify for the Federal Tax Credit for Energy Efficiency?

Yes. Touch ‘n Foam Insulation does qualify for the 2012 – 2015 Federal Tax Credit Under The American Taxpayer Relief Act, when used for insulation purposes, in new or existing residential dwellings. 

Download the IRS form.

Download and print a copy of the Manufacturer's Certification statement here.

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Are Touch 'n Foam products made in U.S.A?

Yes. Touch 'n Foam Insulation does comply with the American Recovery Act, Buy American provisions (ARRA-09, Section 1605).
Download and print a copy of the Manufacturer's Certificate of Compliance here.

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