Roof size reference

Roof size for a 2,800 sq ft house

One story: about 32.5–37 squares (3,247–3,702 sq ft of roof) at 4/12–8/12. Two stories: about 16.2–18.5 squares over a 1,400 sq ft footprint.

2,800 sq ft ranch, by pitch

Pitch	Roof sq ft	Squares	Bundles*	Ice barrier sq ft
4/12	3,247	32.5	108	816
5/12	3,337	33.4	111	816
6/12	3,444	34.4	114	816
7/12	3,566	35.7	118	816
8/12	3,702	37	123	816
9/12	3,850	38.5	128	816
10/12	4,009	40.1	133	816
12/12	4,356	43.6	144	816

*3/square + 10% waste. Footprint 2,800 + 10% overhang = 3,080 sq ft.

Two stories instead?

A two-story 2,800 sq ft house sits on about 1,400 sq ft, so its roof is 16.2–18.5 squares. That matches a 1,400 sq ft ranch.

Early budget · architectural shingles · our provisional setting

$16,300 – $37,000

2,800 sq ft ranch, 32.5–37 squares, Ohio and Michigan. Two-story: $8,100–$18,500.

Get your own range

Winter details for 2,800 sq ft in Ohio or Michigan

Attic vents. With about 2,800 sq ft of attic floor, the IRC R806.2 ratios work out to 2,688 sq in of net free vent area at 1/150 or 1,344 sq in at 1/300, about 672–1,344 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 2,800 sq ft ranch has about 136 ft of eaves. At 6/12 with a 12-inch overhang that is 2 courses (40.2 in up the slope), roughly 816 sq ft of membrane where your local code calls for it.

Frequently asked questions

How many squares is a 2,800 sq ft ranch roof?

About 32.5 to 37 squares between 4/12 and 8/12; at 6/12 it is 34.4 squares (3,444 sq ft).

How many bundles for a 2,800 sq ft one-story house?

108–123 bundles at 3 per square with 10% waste; 114 at 6/12.

What about a two-story 2,800 sq ft house?

Its footprint is about 1,400 sq ft, so the roof is roughly 16.2–18.5 squares.

Early budget for a 2,800 sq ft ranch roof?

$16,300–$37,000 for architectural shingles using our provisional $500–$1,000 per square setting, not a quote.