Spray On Insulation Attic Roof

The blower should include two 50 ft.

Spray on insulation attic roof.

It can be fairly messy so benefits from having experienced crew do the installation. The insulation reduces wildly high temperature spikes and so the attic becomes a conditioned part of the home like any other room. It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass. Similar to loose fill though this is a liquid that when applied becomes a durable layer of foam insulation.

The attic you see in the photo here is a different home but it does have one feature in common besides the spray foam. When spray foam is installed on the underside of the roof deck the attic space is insulated from heat that otherwise would be entering the attic. It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing. The installer sprayed foam directly on the metal flues.

I d blow insulation on the attic floor after air sealing of course. Unlike solid insulation products that require careful measurement cutting and fitting spray foam can cover even the most uneven surface instantly. Hoses that you can connect and snake into the attic. Polyurethane or polystyrene spray foams can provide thorough coverage to roof rafters and attic walls in much less time than is needed for other materials.

If you look closely you ll see two exhaust flues on the left side. This construction approach was first used in the 1970s and it has been implemented much more widely since it was first included in the international code council s icc model building code in 2007 irc section 806 4. Spray foam insulation is an incomplete name. Set the blower on a tarp on flat ground near the window or vent opening closest to the attic access.

It really should be called spray foam insulation and air barrier. A properly done spray foam job not only insulates but also greatly reduces the air leakage of a home. Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls. Roof attic insulation options costs and pros cons.

The big disadvantage with spray foam is cost. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary. To get a better air seal. You ll also see another safety hazard and code violation.

Once you deal with the air up there this problem goes away with or without the insulation in the attic floor. Your helper will feed the blown in insulation into the hopper while you work the hose up in the attic photo 5.