FAQ

One-component spray polyurethane foam (SPF) is dispensed as a foamy liquid that expands as it cures into a rigid foam that insulates, seals, and fills small voids and cracks such as around windows and frames, sill plates, electrical devices where air leakage and energy loss can occur.

Two-component low-pressure spray polyurethane (SPF) Foam Kits combine an A-component and B-component to produce a foamy blend that expands quickly and chemically-cures to form a solid compound. The A-component and B-component are delivered from pre-pressurized portable cylinders through hoses to a spray application gun. The applicator combines both components and creates the spray pattern to control the application of foam to surfaces.

Two-component Spray Foam Kits are the right choice for air sealing and insulating small to mid-sized projects. residential, commercial, industrial, and agricultural construction projects. Foam insulation is efficient with air-sealing and weatherizing homes that have many energy wasting gaps and cracks that allow air to leak in and out of the house. It can also be used to air seal behind cellulose or fiberglass products (“flash and batt”).

Two-component systems are an effective 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.

• Residential new construction
• Home weatherization
• Manufactured housing
• 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
• Marine flotation
• Underground mining

Low-pressure one-component polyurethane foams (OCF) should be used as a bead application to fill gaps, cracks, small voids, and penetrations. They should not be used to seal or insulate any large area. This is because one-component foams cure upon reaction with moisture, such as humidity in the air. Without adequate moisture, the product will remain in a chemical state until moisture is introduced. Given the previous conditions, one-component foams are not typically suited for closed cavity filling where little to no moisture is present or where large areas of coverage are needed.

Low-pressure two-component polyurethane foams (SPF) expand and cure immediately upon chemical reaction of A component (isocyanate) and B component (a polyol blend) to a final volume that is three to five times the dispensed volume in typical applications. Two-component polyurethane foams are well suited for large surface areas of coverage requiring multiple layers or thicknesses. Since the product is a chemical cure, it is ideal for cavity, mold filling and a slew of different insulating applications.

A board foot is a 12ʺ length x 12ʺ width x 1ʺ thickness of coverage.

R-Value is a measure of thermal resistance. R-value measures how well building insulation can prevent the flow of heat into and out of the home. R-Value is used in the building and construction industry. The more effective the material is at resisting heat flow, the higher the R-Value rating will be.

Two-component foam, when sprayed following the manufacturer’s instructions, will expand differing amounts based upon the foam’s intended density. The lower the density, the more expansion will occur. 1.75 pcf SPF will expand approximately 6 – 8 times the volume of the dispensed froth.

Closed cell low-pressure polyurethane foam is not considered waterproof, but it is classified as a “vapor retarder.” The potential for water vapor or water to penetrate through foam differs by product and is characterized as the “Perm Rating” located on the TDS. The capability for the foam to resist transmission of water or moisture is directly linked to the thickness and closed cell content of the foam. It is generally not advised to use foam in an application where the foam itself will have constant contact with water.

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.

Storage one week or less:

1. Engage the spray foam applicator safety.
2. Turn the yellow chemical cylinder valves off (clockwise).
3. Remove and retain the used spray nozzle.
4. Clean the spray foam applicator barrel and apply petroleum jelly (Vaseline).
5. Do not drain chemicals from hoses. It is important that chemicals are left in the chemical hoses to prevent air from entering the chemical hoses and the spray foam applicator.
6. Place the used nozzle, with cured foam, on the barrel of the applicator. This will help to prevent air and moisture from entering the applicator.
7. Store as directed.
8. When reactivating, wear all appropriate PPE including safety glasses or goggles, nitrile gloves, clothing that protects against skin exposure and if applying spray foam in an area without adequate ventilation, it may be necessary to use an air purifying respirator.
9. Ensure the spray foam applicator safety is in the locked position.
10. Turn the yellow chemical cylinder valves on (counterclockwise).
11. Remove the used nozzle.
12. Pointing the applicator in a waste receptacle, spray foam for 3 – 5 seconds or until two forceful, roughly equal forceful streams of chemical are observed. This will fill the chemical hoses with fresh chemicals.
13. Ensure the front of the applicator barrel is clean of cured foam and excess petroleum jelly (Vaseline). Attach new, unused nozzle.
14. Spray as desired.

Storage longer than one week:

1. Follow steps 1 – 7 for “Storage one week or less” above.
2. Chemical hoses must be flushed weekly (filled with fresh chemicals) to ensure continued usability of the remaining spray foam material. Failure to do so may result in clogging of the chemical hoses and/or the spray foam applicator requiring the purchase of a new chemical hose and spray foam applicator set to use the remaining spray foam materials.
3. Begin purging by first wearing all appropriate PPE including safety glasses or goggles, nitrile gloves, clothing that protects against skin exposure and if applying spray foam in an area without adequate ventilation, it may be necessary to use an air purifying respirator.
4. Ensure the spray foam applicator safety is in the locked position.
5. Open the yellow chemical cylinder valves (turn counterclockwise).
6. Remove and retain the used nozzle.
7. Pointing the applicator in a waste receptacle, spray foam until two forceful, roughly equal streams of chemical are observed. This will flush fresh chemicals into the hoses and thru the spray foam applicator. Note: Depending on how long the chemical sets have seen stored, purging may take several minutes before two forceful chemical streams occur.
8. Ensure the front of the applicator barrel is clean and reattach the used nozzle.
9. Return to storage.
10. Repeat each week while the spray foam kit is in storage.
11. To reactivate, follow steps 8 -14 in “Storage one week or less” above.

For best results apply Touch ‘n Seal 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.

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 Foam Kit 110 will provide 110 board feet theoretical output, a Foam Kit 600 will provide 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.