You can use rigid foam panels or do as tom silva does with nearly all houses these days.
Cellususe for tight attic space.
For attics cellulose insulation is blown in parallel to the joists.
The remaining 20 is filled up by borax or aluminum sulfate.
The installation process for dry cellulose insulation looks like this.
The existing paperbacked fiberglass was not installed correctly leaving the space cold and drafty.
You can t simply buy it in bags and spread it around yourself.
Pros and cons of loose fill fiberglass attic insulation.
Cellulose blown in ceiling insulation is a good choice for diyers.
The house is a cape with a shed dormer roof with front pitch 6 12 and shed pitch 2 1 2.
The next best option s are fiberglass batts or sheets without the paper backing.
In fact our spray foam insulated attic temperatures rarely exceed a 15 degree variable from what the living space temperature is on the most extreme day of the year summer or winter.
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.
Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts.
It can be used by itself to fill in joist cavities that have no insulation or laid as a thick layer over the top of existing batts of fiberglass insulation.
In some cases you can remove the blown in cellulose insulation yourself but if you suspect that mold or asbestos has built up it is best to hire professionals who specialize in attic insulation removal.
Rock wool is more expensive than other eco friendly alternatives so budget conscious homeowners could opt to select a cheaper alternative for the attic exterior walls and crawl spaces only using rock wool to surround the recessed cans.
Hire a pro to install spray foam insulation.
There is room for 20 of insulation distance perpendicular to the face of the ceiling truss heal is over 2 and it would seem that no matter how tight the fabric forming the cavity is stretched the weight of the cellulose will cause it to bulge out and interfere with installation of the drywall.
It is considered preferable by many as a result of its eco friendly properties and its ability to conform to corners uniquely shaped spaces and around obstructions such as ducts or electrical wires and other penetrations.
Retrofit roof with cellulose insulation what insulation details would you recommend for an existing 2x8 roof with 4yr old roofing and plaster finished interior.
However when we seal and insulate your attic deck using lapolla odorless open cell spray foam you re protecting that attic from tortuous high temperatures.
Blown in cellulose insulation is one of the most common insulation types now used in attics and in an existing closed wall.
Loose fill fiberglass seems to dominate attic insulation in new construction homes and has an r value of approximately 2 5 per inch.
