Spray Foam Retrofit Attic

Spray foam insulation for the attic can be somewhat expensive.

Spray foam retrofit attic.

The unvented attic space is considered the most effective and up to date building practice particularly by the spray foam industry. Foam lok retrofit foam provides the same physical properties characteristics of the foam lok open cell spray applied insulation system and allows the applicator to insulate and air seal existing walls. Unvented attics sometimes called sealed enclosed or encapsulated attics feature insulation on the underside of the roof decking rather than on the attic floor. Why retrofit an existing home with spray polyurethane foam.

They are expected to insulate our homes and buildings based on the assumption of dead air and only the principles of advection and convection r factor. Nothing unusual about that. Spray foam retrofit attic these past several years advantage home performance has received numerous requests from home owners who want to eliminate attic vents and upgrade their attic insulation to half pound spray foam insulation installed on the underside of the roof deck these homeowners are ahead of the curve. Before any retrofit work is done inspect the work area for active knob and tube wiring bathroom fans venting into attics roof leaks and other hazardous conditions.

How to insulate attic floor with spray foam insulation. If you were to utilize a standard fiberglass insulation in your attic then the cost in some geographic areas would be about 40 cents per square foot. The vast majority of existing homes in the world are insulated with a air use insulator fiberglass cellulose. This seals and insulates the attic which helps keep the temperatures more moderate usually only about a 10 15 degree temperature difference from the inside of the home.

Create a conditioned or closed attic by adding spray foam insulation to the underside of the roof deck and the rafters and removing vents in the attic. Choosing spray foam for this need instead could cost you well over 6 per square foot in some markets if your r value code requires. Repair these conditions prior to adding insulation.