Insulate Attic Rafters Illinois

Attic baffles also known as rafter vents go along the sides of your attic and keep your soffit vents from being blocked by insulation.

Insulate attic rafters illinois.

All exterior walls including. Extend insulation into joist space to reduce air flows. You can buy air ducts that staple to the inside of your roof above the eave vents and fit between the rafters. In finished attic rooms with or without dormer insulate 2a between the studs of knee walls 2b between the studs and rafters of exterior walls and roof 2c and ceilings with cold spaces above.

Achieving greater r values in attics. Walls between living spaces and unheated garages shed. In finished attic rooms with or without dormer insulate. The ones i ve used are made of styrofoam and iirc they cost around 2.

Place the plastic sheeting on top of the rolled insulation. 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. The will hold open an air gap of approximately 1 inch to allow airflow past a layer of insulation. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss. Home ceilings are usually insulated in order to seal off the extreme temperatures in your attic. You should only insulate your rafters if you have baffles installed to separate the actual rafters themselves from the insulation. 2d extend insulation into joist space to reduce air flows.

You can achieve better thermal performance in your attic by adding an. Between the studs of knee walls. Hire a pro to install spray foam insulation. For rolled insulation place it between roof rafters.

You can use rigid foam panels or do as tom silva does with nearly all houses these days. Together with an expert you should inspect and consider the condition of your attic s current insulation if it has any. Then feed the rolled insulation under wires and pipe if either is present. Ceilings with cold spaces above.

This is an important step as you may find roof problems or rafter damage which a roofer should correct before you install new insulation.