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INSULATION CHART |
How Many Bags of Insulation Will You Need?
Simply measure the area of the walls or ceilings that you want to insulate (height times width will give you the square footage), then use the guide below to calculate how many bags you'll need
| R-VALUE | WIDTH | LENGTH | THICKNESS | SQ. FT./BAG | |
|---|---|---|---|---|---|
| 15" WIDE | 23" WIDE | ||||
| WALLS | |||||
| R-12 | 15" | 47" | 3-1/2" | 88.1 | 135.1 |
| R-13 | 14-3/4" | 47" | 3-1/2" | 57.8 | 89.1 |
| R-14 | 15" | 47" | 3-1/2" | 49.5 | 75.9 |
| R-20 | 23" | 47" | 6" | 49.0 | 75.1 |
| R-22 | 14-3/4" | 47" | 5" | 33.7 | 52.0 |
| CEILINGS | |||||
| R-28 | 16" | 48" | 8" | 42.6 | 64.0 |
| R-31 | 16" | 48" | 8-3/4" | 42.6 | 64.0 |
| R-35 | 16" | 48" | 9-7/8" | 37.3 | 56.0 |
| R-40 | 16" | 48" | 10-3/8" | 26.7 | 40.0 |
| STEEL STUDS | |||||
| R-8 | 16" | 48" | 2-1/2" | 170.4 | 256.0 |
| R-12 | 16" | 48" | 3-1/2" | 106.5 | 106.5 |
| R-20 | 16" | 48" | 6" | 58.5 | 88.0 |
R-Values
and sizes may vary by region. |
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Tips & Ideas
Use the right tools for the job!
Like any job, insulating your home is a project that will be easier, safer and better if you choose the right tools for the job.
Safety light, extension cord.
Tape measure, straight edge and sharp utility knife.
Staple gun (for poly vapour barrier).
Lightweight safety goggles.
Dust mask
Don't forget... Wear loose fitting clothing, long sleeves buttoned up, a mask, snug work gloves and a hat.