Shingles for a 3,300 sq ft roof

109 bundles of shingles

for 3,300 sq ft of roof (33 squares) with 10% waste, at 3 bundles per square.

Materials for a 3,300 sq ft roof

Squares33
Bundles, gable roof (10% waste)109
Bundles, hip roof or valleys (15% waste)114
Synthetic underlayment (1,000 sq ft rolls)4
#15 felt (400 sq ft rolls)9
Roofing nailsabout 83 lb

If 3,300 sq ft is the footprint, not the roof

Measured flat from above, a footprint of 3,300 sq ft makes a bigger roof once you account for the slope:

PitchRoof areaSquaresBundles
4/123,479 sq ft34.8115
6/123,690 sq ft36.9122
8/123,966 sq ft39.7131
10/124,296 sq ft43142
12/124,667 sq ft46.7155

Start from your house footprint instead

Shingles needed

109 bundles

3,300 sq ft of roof (33 squares) at 6/12, plus 10% waste.

Roof area3,300 sq ft
Squares33 (order 36.3)
Bundles (3 per square)109 (about $4,360)
Synthetic underlayment4 rolls of 1,000 sq ft
#15 felt9 rolls of 400 sq ft
Roofing nailsabout 83 lb

Other roof sizes

Questions

How many bundles of shingles for a 3,300 sq ft roof?
109 bundles: 33 squares plus 10% waste, at 3 bundles per square. Allow 114 for a hip roof or one with valleys.
How many squares is a 3,300 sq ft roof?
33 squares (a square is 100 sq ft of roof).
How much does it cost to shingle a 3,300 sq ft roof?
Shingles alone run about $4,360 at $40 a bundle. A full asphalt shingle replacement typically costs $4 to $8 per sq ft installed: $13,200 to $26,400.
My house is 3,300 sq ft. How big is the roof?
Bigger than the house. For a one-story 3,300 sq ft house with a 6/12 roof and 1 ft overhangs, the roof is roughly 4,130 sq ft. Two-story homes have about half the roof area for the same floor space.

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