Insulate Attic Rafters Illinois

If your attic is usable space but not lived in then you won t need to insulate the roof rafters as long as the ceiling floor that separates the roof from your living area below is insulated.

Insulate attic rafters illinois.

You should only insulate your rafters if you have baffles installed to separate the actual rafters themselves from the insulation. Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss. 2d extend insulation into joist space to reduce air flows. Attic baffles also known as rafter vents go along the sides of your attic and keep your soffit vents from being blocked by insulation.

If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor. Extend insulation into joist space to reduce air flows. Then feed the rolled insulation under wires and pipe if either is present. Ceilings with cold spaces above.

Achieving greater r values in attics. This is an important step as you may find roof problems or rafter damage which a roofer should correct before you install new insulation. You can use rigid foam panels or do as tom silva does with nearly all houses these days. The will hold open an air gap of approximately 1 inch to allow airflow past a layer of insulation.

All exterior walls including. The ones i ve used are made of styrofoam and iirc they cost around 2. You can achieve better thermal performance in your attic by adding an. Between the studs and rafters of exterior walls and roof.

Home ceilings are usually insulated in order to seal off the extreme temperatures in your attic. Hire a pro to install spray foam insulation. Walls between living spaces and unheated garages shed. Place the plastic sheeting on top of the rolled insulation.

Together with an expert you should inspect and consider the condition of your attic s current insulation if it has any. In finished attic rooms with or without dormer insulate. You can buy air ducts that staple to the inside of your roof above the eave vents and fit between the rafters. For rolled insulation place it between roof rafters.

The higher the r value the better the thermal performance of the insulation.