The roof and atti.
How to spray foam attic floor.
Install a minimum of 1 inch of spray foam insulation over the attic floor to provide a continuous air control layer.
The practice of foam insulating the attic has raised eyebrows in the building industry because standard roofing techniques call for the attic to be ventilated.
When to spray foam attic floors.
It s quick and easy to do.
Earlier this year i got a question about a home that had spray foam insulation in the attic.
That makes the surface of the spray foam cooler possibly even below the dew point.
But now the attic isn t vented to outdoors.
Class i e 84 fire retardant meets building code spec.
100 free of cfcs vocs penta bdes urea formaldehyde.
If you re not planning to turn your attic into another living space then you can address one of the worst areas of energy loss in a house.
Get your kits the easy to use spray foam kit.
Use closed cell foam it green for attic rafters.
There s no reason for an air conditioning and vent ductwork to have to work in that type of severe conditions.
Spray foam insulation that s convenient and easy to use.
Using spray foam insulation in an attic is a popular energy saving project.
A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.
However in a vented attic situation it will become approximately 130 degrees in the summer.
Sealing the top of the house keeps the air you paid to heat and cool inside your home.
Install the spray foam to meet or exceed code required r values or add additional loose fill or batt fibrous insulation over the 1 inch of spray foam insulation to levels that meet or exceed the current adopted building energy codes.
Nothing unusual about that.
The best attic insulation.
R value of 7 in 1 inch 97 closed cell foam.