Roof size reference
Roof size for a 1,500 sq ft house
One story: about 17.4–19.8 squares (1,739–1,983 sq ft of roof) at 4/12–8/12. Two stories: about 8.7–9.9 squares over a 750 sq ft footprint.
1,500 sq ft ranch, by pitch
| Pitch | Roof sq ft | Squares | Bundles* | Ice barrier sq ft |
|---|---|---|---|---|
| 4/12 | 1,739 | 17.4 | 58 | 597 |
| 5/12 | 1,788 | 17.9 | 60 | 597 |
| 6/12 | 1,845 | 18.5 | 61 | 597 |
| 7/12 | 1,910 | 19.1 | 64 | 597 |
| 8/12 | 1,983 | 19.8 | 66 | 597 |
| 9/12 | 2,063 | 20.6 | 69 | 597 |
| 10/12 | 2,148 | 21.5 | 71 | 597 |
| 12/12 | 2,334 | 23.3 | 77 | 597 |
*3/square + 10% waste. Footprint 1,500 + 10% overhang = 1,650 sq ft.
Two stories instead?
A two-story 1,500 sq ft house sits on about 750 sq ft, so its roof is 8.7–9.9 squares. A 3,000 sq ft two-story has about the same roof as this one-story.
Early budget · architectural shingles · our provisional setting
$8,700 – $19,800
1,500 sq ft ranch, 17.4–19.8 squares, Ohio and Michigan. Two-story: $4,400–$9,900.
Winter details for 1,500 sq ft in Ohio or Michigan
Attic vents. With about 1,500 sq ft of attic floor, the IRC R806.2 ratios work out to 1,440 sq in of net free vent area at 1/150 or 720 sq in at 1/300, about 360–720 sq in of it at the soffits. That balance keeps the deck cold and cuts ice dams.
Eave ice barrier. Assuming a rectangle 1.5 times as long as wide, a 1,500 sq ft ranch has about 99 ft of eaves. At 6/12 with a 12-inch overhang that is 2 courses (40.2 in up the slope), roughly 597 sq ft of membrane where your local code calls for it.
Frequently asked questions
How many squares is a 1,500 sq ft ranch roof?
About 17.4 to 19.8 squares between 4/12 and 8/12; at 6/12 it is 18.5 squares (1,845 sq ft).
How many bundles for a 1,500 sq ft one-story house?
58–66 bundles at 3 per square with 10% waste; 61 at 6/12.
What about a two-story 1,500 sq ft house?
Its footprint is about 750 sq ft, so the roof is roughly 8.7–9.9 squares.
Early budget for a 1,500 sq ft ranch roof?
$8,700–$19,800 for architectural shingles using our provisional $500–$1,000 per square setting, not a quote.