Spray Foam In Attic Floor
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Spray foam attic floor.
Spray foam in attic floor. Then you can use other forms of insulation like fiberglass or cellulose to add r value now that you have a tight air seal. I can also tell you that 73 of all statistics are made up on the spot so please don t ask for. Our r value is 22 with the open cell spray foam on the roof deck and our attic is defined as conditioned space when we have spray foam on the roof deck as long as it s done right. This means installing spray foam to a depth of at least 2 on the entire attic floor to completely seal everything up.
Now why is that important. Homes insulated with it can be some of the most efficient and comfortable homes built. After the foam is cured loose fill fiberglass or cellulose insulation gets installed on top of the foam. Let s talk about the attic floor first.
But now the attic isn t vented to outdoors. Spray foaming your living space ceiling from the attic is the best way to ensure that no air is leaking into the attic. I ve been in plenty of these homes and can tell you that when spray foam is installed properly they outperform 99 of fiberglass batt insulated stick built homes. That makes the surface of the spray foam cooler possibly even below the dew point.
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. Never worry about batt insulation not covering all areas. The best part of using foam it green spray foam on an attic floor is you only need 1 inch cured thickness to seal the living spaces you use from the attic. A cost effective way to use foam insulation is to foam the lid of the house then use loose fill insulation on top.
Remove the insulation on the attic floor with spray foam on the roof deck u x a x delta t heat gain where. Removing the attic floor insulation will solve this problem. The first big pro to insulating the attic floor over the rafters is that if you measure out the square footage you re going to have less almost every time when you re looking at the attic floor. The attic is much warmer than outdoors in winter but significantly cooler than the living space if you leave the old insulation in the attic floor.
Spray foam insulation is a great product.
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