Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and.
Easy way to insulate attic.
By stapling the foil sheets to your attic roof rafters you can reflect the heat that hits the rafters back down into your home s living space.
Don t worry if the fiberglass batt insulation at the home center seems to be too thin.
Installing a vapor barrier.
Cut any larger width rolls 1140mm to the desired width dependent on your joist s spacing.
In some ways rigid foam insulation is easier to work with but fiberglass is usually easier to get up into the attic.
If you re laying narrow pre cut rolls 370 380 or 570mm or encapsulated insulation jump to step 2.
Cut a hole in the insulation wherever there is electrical wiring.
It will expand to as much as 6 inches thick.
While insulating your attic space with foam can be an effective way to lower heating costs you can use a simple reflective foil material as a cost effective alternative.
See how to calculate the desired width of loft roll insulation for appropriate width sizes.
Place planks 1 by 6 or 1 by 8 or plywood sheaths across floor joists to improve.
Pull the wiring up through the hole and rest it on top.
To install insulation.
Press and tuck the edges of each part of the blanket to make sure they fit snugly and that there are no gaps between.
Lay a two by four on top temporarily compressing the insulation to a manageable.
To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down.
Batts and blankets insulation often comes with a vapor retardant facing and some varieties.