The pros often use spray foam insulation or blow shredded insulation.
Can I Use Wall Insulation In The Attic. Instead of insulating and making airtight walls adjacent to a vented attic space an the advantages of unvented attic construction using spray foam insulation are numerous. For diy attic insulation, you've got two choices:
Should I Remove Old Attic Insulation Before I Spray Foam ... from greenappleinsulation.com
When modeling an attic, there may be multiple insulation sections for the floor or roof yet really be part of the same attic node. New attic insulation service by attic guys. I have ripped the walls and ceilings.
Foamular® xps insulation for attic ceilings.
If installing shredded insulation, fill the attic space at least 15 inches when you reach a wall, pull the insulation back over a joist, lay a level over the insulation and cut across the level. Have you ever looked in the attic of your house? If your attic space is framed with rafters the knee wall, by itself, can provide some degree of insulation against air infiltration from the outside. Foamular® xps insulation for attic ceilings.
