If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
Best attic spray insulation.
I d blow insulation on the attic floor after air sealing of course.
The big disadvantage with spray foam is cost.
This type of insulation can be purchased online or at home depot.
For diy attic insulation you ve got two choices.
Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts.
Choose from two types.
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.
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.
Loose fill or batt the common term for blanket insulation.
Cellulose blown in ceiling insulation is a good choice for diyers.
Cellulose doesn t use any greenhouse gases as propellants.
Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Without question batt insulation is the most popular option for people who are looking to control sound and temperature.
It can be a do it yourself attic insulation project.
Cellulose is very inexpensive when it comes to attic projects in comparison to other materials.
Spray foam attic insulation spray foam offers the best attic insulation performance available.
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.
Open cell polyurethane and closed cell polyurethane.
There are two types of spray foam.
They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.
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.
Rolls and batts are produced of mineral wool and fiberglass.
Diyers can use this foam for small jobs such as insulating door frames.
Cellulose has more recycled material than any other commercially available insulation.
Both can be added to uninsulated attics or layered over existing material.
This insulation comes in rectangular panels most of the time and they can vary in thickness quite a bit.
Blanket insulation modern technology of blanket insulation today is considered the best insulation for attic.