In finished attic rooms with or without dormer insulate.
Insulate attic rafters illinois.
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.
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.
For rolled insulation place it between roof rafters.
Extend insulation into joist space to reduce air flows.
Ceilings with cold spaces above.
Achieving greater r values in attics.
All exterior walls including.
Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss.
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.
You can use rigid foam panels or do as tom silva does with nearly all houses these days.
Walls between living spaces and unheated garages shed.
You can achieve better thermal performance in your attic by adding an.
You can buy air ducts that staple to the inside of your roof above the eave vents and fit between the rafters.
The ones i ve used are made of styrofoam and iirc they cost around 2.
Home ceilings are usually insulated in order to seal off the extreme temperatures in your attic.
Then feed the rolled insulation under wires and pipe if either is present.
Attic baffles also known as rafter vents go along the sides of your attic and keep your soffit vents from being blocked by insulation.
You should only insulate your rafters if you have baffles installed to separate the actual rafters themselves from the insulation.
The higher the r value the better the thermal performance of the insulation.
Place the plastic sheeting on top of the rolled insulation.
This is an important step as you may find roof problems or rafter damage which a roofer should correct before you install new insulation.
Together with an expert you should inspect and consider the condition of your attic s current insulation if it has any.
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.
Between the studs of knee walls.
2d extend insulation into joist space to reduce air flows.
