Shingles for a 2,800 sq ft roof

93 bundles of shingles

for 2,800 sq ft of roof (28 squares) with 10% waste, at 3 bundles per square.

Materials for a 2,800 sq ft roof

Squares28
Bundles, gable roof (10% waste)93
Bundles, hip roof or valleys (15% waste)97
Synthetic underlayment (1,000 sq ft rolls)3
#15 felt (400 sq ft rolls)7
Roofing nailsabout 71 lb

If 2,800 sq ft is the footprint, not the roof

Measured flat from above, a footprint of 2,800 sq ft makes a bigger roof once you account for the slope:

PitchRoof areaSquaresBundles
4/122,951 sq ft29.598
6/123,130 sq ft31.3104
8/123,365 sq ft33.7112
10/123,645 sq ft36.4121
12/123,960 sq ft39.6131

Start from your house footprint instead

Shingles needed

93 bundles

2,800 sq ft of roof (28 squares) at 6/12, plus 10% waste.

Roof area2,800 sq ft
Squares28 (order 30.8)
Bundles (3 per square)93 (about $3,720)
Synthetic underlayment3 rolls of 1,000 sq ft
#15 felt7 rolls of 400 sq ft
Roofing nailsabout 71 lb

Other roof sizes

Questions

How many bundles of shingles for a 2,800 sq ft roof?
93 bundles: 28 squares plus 10% waste, at 3 bundles per square. Allow 97 for a hip roof or one with valleys.
How many squares is a 2,800 sq ft roof?
28 squares (a square is 100 sq ft of roof).
How much does it cost to shingle a 2,800 sq ft roof?
Shingles alone run about $3,720 at $40 a bundle. A full asphalt shingle replacement typically costs $4 to $8 per sq ft installed: $11,200 to $22,400.
My house is 2,800 sq ft. How big is the roof?
Bigger than the house. For a one-story 2,800 sq ft house with a 6/12 roof and 1 ft overhangs, the roof is roughly 3,510 sq ft. Two-story homes have about half the roof area for the same floor space.

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