Shingles for a 800 sq ft roof

27 bundles of shingles

for 800 sq ft of roof (8 squares) with 10% waste, at 3 bundles per square.

Materials for a 800 sq ft roof

Squares8
Bundles, gable roof (10% waste)27
Bundles, hip roof or valleys (15% waste)28
Synthetic underlayment (1,000 sq ft rolls)1
#15 felt (400 sq ft rolls)2
Roofing nailsabout 21 lb

If 800 sq ft is the footprint, not the roof

Measured flat from above, a footprint of 800 sq ft makes a bigger roof once you account for the slope:

PitchRoof areaSquaresBundles
4/12843 sq ft8.428
6/12894 sq ft8.930
8/12961 sq ft9.632
10/121,041 sq ft10.435
12/121,131 sq ft11.338

Start from your house footprint instead

Shingles needed

27 bundles

801 sq ft of roof (8 squares) at 6/12, plus 10% waste.

Roof area801 sq ft
Squares8.01 (order 8.8)
Bundles (3 per square)27 (about $1,080)
Synthetic underlayment1 rolls of 1,000 sq ft
#15 felt3 rolls of 400 sq ft
Roofing nailsabout 21 lb

Other roof sizes

Questions

How many bundles of shingles for a 800 sq ft roof?
27 bundles: 8 squares plus 10% waste, at 3 bundles per square. Allow 28 for a hip roof or one with valleys.
How many squares is a 800 sq ft roof?
8 squares (a square is 100 sq ft of roof).
How much does it cost to shingle a 800 sq ft roof?
Shingles alone run about $1,080 at $40 a bundle. A full asphalt shingle replacement typically costs $4 to $8 per sq ft installed: $3,200 to $6,400.
My house is 800 sq ft. How big is the roof?
Bigger than the house. For a one-story 800 sq ft house with a 6/12 roof and 1 ft overhangs, the roof is roughly 1,000 sq ft. Two-story homes have about half the roof area for the same floor space.

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