Spray Foam Insulation

SPRAY FOAM INSULATION

Spray foam insulation is a type of building insulation that can be used in walls, ceilings, crawlspaces and other parts of buildings. The material is mixed on site with special equipment for large applications and should be applied by professionals only. When the foam insulation is sprayed, it coats the surface and quickly expands as it solidifies. It dries quickly, providing insulation that is relatively permanent and will not sag. If the foam expands beyond the desired area, the excess insulation can be trimmed or cut away to the desired size. When the foam is used in the interior of a house, it must be covered with a fire-resistant material, such as drywall.Spray foam insulation is somewhat dangerous to people when it is being sprayed. Particles can get into the eyes, on the skin or breathed in through the mouth and nose if proper safety equipment and clothing are not worn. The chemicals can irritate the eyes and the respiratory system and can cause inflammation or rashes on the skin. It is recommended for a person to wear goggles, a breathing mask, gloves, long sleeves and long pants when spraying foam insulation.

For small applications, single component foam is available in spray cans, for sealing around windows, doors, etc. The foam will act as an air barrier, but not a vapour barrier and should be protected from prolonged exposure to sunlight.

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