Polytech Foam Products Inc.

Polytech Foam Products A Division of FAI International, Inc. Phone: (800) 888-3457 Fax: (510) 232-3721
Home Products Single Component Foam Two Component Foam Pour-In-Place Foam Order Support FAQ Tutorials Downloads Contact Us Links	Home : Support : Tutorials : Single Component Foam How To Use PolyTech Polyurethane Single Component Caulking Foam The PolyTech Single Component Polyurethane foam (PT-10 & PT-16) is significantly different from its two component counterparts. The foam kit comes in a single pressurized cylinder. All the reacting components are contained in one cylinder. The extruding resin from the cylinder is viscosous and tooth-paste like. This is a moisture cured product. Upon extrusion from the cylinder, the foam resin initiates the chemical reaction when it comes in contact with the moisture in the air. The reaction rate is slow. Under 77 F and 68% R.H., the outer skin of the foam bead will form. It will take an additional 30 minutes before the whole foam bead solidifies. The caulking foam is mainly used for cold air infiltration around windows, doors and exterior cold air entry points. It is useful for cracks or gaps that is narrow and shallow, usually less than 1/2" wide and 1" deep. Due to its slow reaction, if end user fills a deep cavity completely, the resultant foam will expand continuously for the next 24 to 48 hours. The excessive post expansion may create problem for the project. End users must fill the cavity to less than 50% to allow room for post expansion. Protruding excessive foam can be trimmed with a serrated knife. The viscosity of the single component foam resin is inversely proportional to the ambient temperatures. The viscosity of the foam resin increases as the ambient temperatures decrease. The flow rate of a standard formulation may be slightly too slow for some end users in the cold winter months and too fast in the hot summer. We have "winter formulation" and "summer formulation" upon request. The chemical reactions are continuous in a single component foam cylinder after it exits the production line. Components of Resin-A and Resin-B react perpetually until end user uses the product. The resulting continuous molecular crosslinking between Resin-A and Resin-B creates a bigger and bigger chemical molecule over time, and the resultant foam will become more viscous. This is the main reason why the optimal shelf life of the single component foam is approximately seven (7) months. The foam may become too viscous for easy application beyond this point. It is imperative that end users only purchase quantities that they can consume quickly and efficiently. If they decide to carry inventory, use the product in a 'first in, first out' fashion. Our product is significantly different than those foam aerosol cans in Home Depot or other hardware stores. Most aerosol foam cans use a petroleum base, flammable blowing agent. It is hazardous to use in some application. Our product only uses nonflammble, Freon base blowing agents. Underwriter Laboratories certifies that our product has the best (lowest) flame spread and smoke generation index in the industry.
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How To Use PolyTech Polyurethane Single Component Caulking Foam

The PolyTech Single Component Polyurethane foam (PT-10 & PT-16) is significantly different from its two component counterparts. The foam kit comes in a single pressurized cylinder. All the reacting components are contained in one cylinder.

The extruding resin from the cylinder is viscosous and tooth-paste like. This is a moisture cured product. Upon extrusion from the cylinder, the foam resin initiates the chemical reaction when it comes in contact with the moisture in the air. The reaction rate is slow. Under 77 F and 68% R.H., the outer skin of the foam bead will form. It will take an additional 30 minutes before the whole foam bead solidifies.

The caulking foam is mainly used for cold air infiltration around windows, doors and exterior cold air entry points. It is useful for cracks or gaps that is narrow and shallow, usually less than 1/2" wide and 1" deep. Due to its slow reaction, if end user fills a deep cavity completely, the resultant foam will expand continuously for the next 24 to 48 hours. The excessive post expansion may create problem for the project. End users must fill the cavity to less than 50% to allow room for post expansion. Protruding excessive foam can be trimmed with a serrated knife. The viscosity of the single component foam resin is inversely proportional to the ambient temperatures. The viscosity of the foam resin increases as the ambient temperatures decrease. The flow rate of a standard formulation may be slightly too slow for some end users in the cold winter months and too fast in the hot summer. We have "winter formulation" and "summer formulation" upon request. The chemical reactions are continuous in a single component foam cylinder after it exits the production line. Components of Resin-A and Resin-B react perpetually until end user uses the product. The resulting continuous molecular crosslinking between Resin-A and Resin-B creates a bigger and bigger chemical molecule over time, and the resultant foam will become more viscous. This is the main reason why the optimal shelf life of the single component foam is approximately seven (7) months. The foam may become too viscous for easy application beyond this point.

It is imperative that end users only purchase quantities that they can consume quickly and efficiently. If they decide to carry inventory, use the product in a 'first in, first out' fashion. Our product is significantly different than those foam aerosol cans in Home Depot or other hardware stores. Most aerosol foam cans use a petroleum base, flammable blowing agent. It is hazardous to use in some application. Our product only uses nonflammble, Freon base blowing agents. Underwriter Laboratories certifies that our product has the best (lowest) flame spread and smoke generation index in the industry.