There are two types of spray foam.
Best attic spray insulation.
The big disadvantage with spray foam is cost.
The open cell polyurethane foam has an r value of 3 5 to 3 6 per inch with a price tag of 1 1 20 square foot.
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.
Without question batt insulation is the most popular option for people who are looking to control sound and temperature.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts.
Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc.
Blanket insulation modern technology of blanket insulation today is considered the best insulation for attic.
Cellulose blown in ceiling insulation is a good choice for diyers.
Cellulose doesn t use any greenhouse gases as propellants.
Cellulose has more recycled material than any other commercially available insulation.
If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
Diyers can use this foam for small jobs such as insulating door frames.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Open cell polyurethane and closed cell polyurethane.
Rolls and batts are produced of mineral wool and fiberglass.
Loose fill or batt the common term for blanket insulation.
Choose from two types.
Cellulose is very inexpensive when it comes to attic projects in comparison to other materials.
Closed cell and open cell aka 2 pound and pound respectively.
Cellulose is the most effective material and has an r value of 2 2 to 3 8 per inch but if exposed to moisture it can get moldy.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs.
For diy attic insulation you ve got two choices.
This type of insulation can be purchased online or at home depot.
It can be a do it yourself attic insulation project.
This insulation comes in rectangular panels most of the time and they can vary in thickness quite a bit.
I d blow insulation on the attic floor after air sealing of course.