Why use spray foam insulation?
Spray foam insulation has numerous advantages over the more traditional insulation types:
As foam can fill almost any space, even the smallest cracks and holes are sealed. This means a warmer house in the winter and a cooler house in the summer. It also means a quieter home with significantly reduced energy costs.
Foam can stick to the underside of floors not only as a insulation but as a noise barrier.
There are no openings for insects and rodents to get into due to it penetrating ability.
Spray foam insulated homes are usually cleaner environments for allergy sufferers because the foam fills the tiniest of cracks, preventing pollen and dust from entering. Its air-tight vapour barrier qualities make it resistant to mold and moisture-based decay which also cause allergies for many people.
There are NO harmful emissions and it is durable and long-lasting.
How does it work?
Spray foam insulation is starts as a liquid and it is applied via a high pressure nozzle as a spray. It looks a little like paint when first applied however it is actually a combination of two substances that blend together at the nozzle. It immediately begin to cure once the two substance blend at the nozzle of the spray gun. The curing process—which happens within seconds – expands the liquid into a thick foam, which then fills the space and creates an air-tight seal.
What is open cell versus closed cell insulation?
When it comes to spray foam insulation there are essentially 2 types – open cell and closed cell. Open cell insulation is, as the name suggests, made from tiny foam cells that are not completely closed. The density of an open cell insulator is typically ½ lb. In closed cell insulation, the foam cells are closed and filled with a gas that helps expand the foam and create a tight barrier. The density of a closed cell insulator is typically 2 lbs. The advantages of closed cell foam include its strength, higher R-value, and its greater resistance to the leakage of air or water vapor.
Envotek uses both open and closed cell products from Foamsulate Eco however we believe that there is a clear advantage to the closed cell foam
What is R-value?
R-value is the way we measure thermal resistance which is the ability of a material to resist heat flow. The higher the R-value, the greater the resistance to heat loss. The R-value is a very useful measurement, but it only measures conduction. Conduction is where heat escapes through solid objects by transfer. Conduction accounts for approximately 20% of a building’s heat loss. The rest of the heat lost is from convection – where heat escapes via air moving from one place to another. Spray foam insulation, a little as a ¼” can stop 99% of convection heat loss.
Will spray foam insulation stick to cement?
Yes, providing the surfaces is reasonably clean Sprayed Polyurethane foam will form a bond on virtually all substrates including wood, stone, gravel, brick and cement.
Will the foam give off gasses?
A slight odor will be present during installation of spray polyurethane insulation. This will rapidly dissipate after the spraying operation stops. After that, the installed spray polyurethane insulation will be odorless. It emits no VOCs (Volatile Organic Compounds) or CFCs (Chloro Fluoro Carbons). It contains no formaldehyde or bleach and insulates without any of the harmful environmental side effects of older insulation materials.
Can Spray Foam Insulation be applied in the winter?
Yes, the formula is adjusted to account for the temperature and humidity and the equipment is heated to ensure the foam is applied at the optimum temperature and cures correctly regardless of the ambient temperature and humidity.