Roof size reference

Roof size for a 1,200 sq ft house

One story: about 13.9–15.9 squares (1,391–1,586 sq ft of roof) at 4/12–8/12. Two stories: about 7–7.9 squares over a 600 sq ft footprint.

1,200 sq ft ranch, by pitch

Pitch	Roof sq ft	Squares	Bundles*	Ice barrier sq ft
4/12	1,391	13.9	46	534
5/12	1,430	14.3	48	534
6/12	1,476	14.8	49	534
7/12	1,528	15.3	51	534
8/12	1,586	15.9	53	534
9/12	1,650	16.5	55	534
10/12	1,718	17.2	57	534
12/12	1,867	18.7	62	534

*3/square + 10% waste. Footprint 1,200 + 10% overhang = 1,320 sq ft.

Two stories instead?

A two-story 1,200 sq ft house sits on about 600 sq ft, so its roof is 7–7.9 squares. A 2,400 sq ft two-story has about the same roof as this one-story.

Early budget · architectural shingles · our provisional setting

$7,000 – $15,900

1,200 sq ft ranch, 13.9–15.9 squares, Ohio and Michigan. Two-story: $3,500–$7,900.

Get your own range

Winter details for 1,200 sq ft in Ohio or Michigan

Attic vents. With about 1,200 sq ft of attic floor, the IRC R806.2 ratios work out to 1,152 sq in of net free vent area at 1/150 or 576 sq in at 1/300, about 288–576 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 1,200 sq ft ranch has about 89 ft of eaves. At 6/12 with a 12-inch overhang that is 2 courses (40.2 in up the slope), roughly 534 sq ft of membrane where your local code calls for it.

Frequently asked questions

How many squares is a 1,200 sq ft ranch roof?

About 13.9 to 15.9 squares between 4/12 and 8/12; at 6/12 it is 14.8 squares (1,476 sq ft).

How many bundles for a 1,200 sq ft one-story house?

46–53 bundles at 3 per square with 10% waste; 49 at 6/12.

What about a two-story 1,200 sq ft house?

Its footprint is about 600 sq ft, so the roof is roughly 7–7.9 squares.

Early budget for a 1,200 sq ft ranch roof?

$7,000–$15,900 for architectural shingles using our provisional $500–$1,000 per square setting, not a quote.