Shingles for a 3,900 sq ft roof
129 bundles of shingles
for 3,900 sq ft of roof (39 squares) with 10% waste, at 3 bundles per square.
Materials for a 3,900 sq ft roof
| Squares | 39 |
|---|---|
| Bundles, gable roof (10% waste) | 129 |
| Bundles, hip roof or valleys (15% waste) | 135 |
| Synthetic underlayment (1,000 sq ft rolls) | 4 |
| #15 felt (400 sq ft rolls) | 10 |
| Roofing nails | about 99 lb |
If 3,900 sq ft is the footprint, not the roof
Measured flat from above, a footprint of 3,900 sq ft makes a bigger roof once you account for the slope:
| Pitch | Roof area | Squares | Bundles |
|---|---|---|---|
| 4/12 | 4,111 sq ft | 41.1 | 136 |
| 6/12 | 4,360 sq ft | 43.6 | 144 |
| 8/12 | 4,687 sq ft | 46.9 | 155 |
| 10/12 | 5,077 sq ft | 50.8 | 168 |
| 12/12 | 5,515 sq ft | 55.2 | 183 |
Start from your house footprint instead
Other roof sizes
Questions
- How many bundles of shingles for a 3,900 sq ft roof?
- 129 bundles: 39 squares plus 10% waste, at 3 bundles per square. Allow 135 for a hip roof or one with valleys.
- How many squares is a 3,900 sq ft roof?
- 39 squares (a square is 100 sq ft of roof).
- How much does it cost to shingle a 3,900 sq ft roof?
- Shingles alone run about $5,160 at $40 a bundle. A full asphalt shingle replacement typically costs $4 to $8 per sq ft installed: $15,600 to $31,200.
- My house is 3,900 sq ft. How big is the roof?
- Bigger than the house. For a one-story 3,900 sq ft house with a 6/12 roof and 1 ft overhangs, the roof is roughly 4,880 sq ft. Two-story homes have about half the roof area for the same floor space.