Polyurethane foam

Polyurethane foam used to fill voids and gaps, gaps between walls and windows and door frames, sealing of joints between prefabricated elements and structures, seal skins roofing, insulation of pipes and electrical wiring, sound and heat insulation. Polyurethane foam perfectly adheres to wood, concrete, bricks, steel, aluminum, glass and other materials. Does not adhere to polyethylene, silicone and Teflon. To increase the adhesion surface must be cleaned, and mineral, absorbent and dry substrates (eg, brick, stucco, concrete) must be pre-moistened. Hardens (loses its viscosity) of foam after 15 minutes, cures through the 5-24 hours depending on thickness, temperature and humidity. The optimum temperature of application and solidification of +15 to +25 ° C, if necessary, the vial can be heated in a pot of warm water. Before use, vials should be about 20 times as much to shake. Lever firmly screwed to the valve. While working to keep the bottle valve at the bottom. Push the lever to dose out sparingly. Filling start with the lowest point, large voids to fill in layers. Foam increases its volume by 2-3 times for 30-60 minutes and therefore raise the space should be only 40%. After 60 minutes, you can optionally apply another layer of foam. Guaranteed connection (adhesion) of these two layers of foam. When fixing the upper closed voids, to prevent formation of air cushions, it is necessary to ensure adequate ventilation. When sealing foam deformed parts (eg, window and door frames, window sills, etc.), the thickness of the foam should not exceed 50 mm, but in this case can be attained maximum strength mounting. In addition, it is necessary to ensure good attachment of building elements. While fixing door frames, for example, to install spacers on the level of the loops and the door lock. After two hours at 20 timillimetrovom layer and an air temperature of +20 ° C spacers can be removed. At lower temperatures, the foam hardens slowly, hence the spacers should be removed later. With short (15 minutes) interruptions in the work of cleaning the valve is not required. If necessary, the tube, the lever and the valve can be cleaned with solvent or acetone. Hardened foam removed from the valve conventional screw. After solidification of the foam can be applied plaster, it can be painted, glued, drilled, sawed. Foam should not be subjected to the direct influence of ultraviolet radiation. Work should be wearing gloves and goggles. Foam residue on skin or clothing should immediately remove with acetone, alcohol and other solvents. Hardened foam was removed by scraping. Keep banks up to 13 months at temperatures between +5 ° C to 5 in an upright position. It should be borne in mind that the bottle is under pressure and should not be heated above +50 ° C. In the case of spray foam will get your eyes, you need plenty of rinse eyes with water and seek medical advice.