How Many Bundles of Shingles for 1,100 sq ft?
1,100 sq ft of roof surface is 11 roofing squares. With 10% waste and standard 3-bundle-per-square shingles you need 37 bundles. If 1,100 sq ft is the house footprint rather than the roof, multiply by the pitch factor first: at a 6/12 pitch that becomes 41 bundles.
Bundles for 1,100 sq ft of roof by waste factor
| Waste | Squares | 3 bundles / square | 4 bundles / square |
|---|---|---|---|
| 5% (simple gable) | 11.6 | 35 | 47 |
| 10% (typical) | 12.1 | 37 | 49 |
| 15% (hips & valleys) | 12.6 | 38 | 51 |
| 20% (complex, cut-up) | 13.2 | 40 | 53 |
If 1,100 sq ft is the house footprint
Shingles cover the sloped roof, not the floor plan. Multiply the footprint (including overhangs) by the pitch factor to get roof surface:
| Pitch | Roof surface | Squares (+10%) | Bundles |
|---|---|---|---|
| 3/12 | 1,134 sq ft | 12.5 | 38 |
| 4/12 | 1,160 sq ft | 12.8 | 39 |
| 5/12 | 1,192 sq ft | 13.1 | 40 |
| 6/12 | 1,230 sq ft | 13.5 | 41 |
| 7/12 | 1,273 sq ft | 14 | 43 |
| 8/12 | 1,322 sq ft | 14.5 | 44 |
| 9/12 | 1,375 sq ft | 15.1 | 46 |
| 10/12 | 1,432 sq ft | 15.8 | 48 |
| 12/12 | 1,556 sq ft | 17.1 | 52 |
3 bundles per square, 10% waste. Don't know your pitch? Measure it with the Pitch Gauge.
Shingle cost for 1,100 sq ft
| Shingle type | Material per square | Total for 1,100 sq ft (+10%) |
|---|---|---|
| 3-tab shingles | $80–$120 | $968–$1,452 |
| Architectural shingles | $100–$160 | $1,210–$1,936 |
| Premium shingles | $160–$250 | $1,936–$3,025 |
Shingles only. Underlayment, flashing, ridge cap, disposal and labour are extra.
Nails and underlayment
| Underlayment | Typical roll coverage | Rolls (+10% laps) |
|---|---|---|
| Synthetic underlayment | 1,000 sq ft | 2 |
| #15 felt | 400 sq ft | 4 |
| #30 felt | 200 sq ft | 7 |
Nails: about 3,873 with a standard 4-nail pattern, or 5,809 with a 6-nail high-wind pattern. Check roll labels: coverage varies by brand.
Frequently asked questions
How many bundles of shingles do I need for 1,100 sq ft?
For 1,100 sq ft of roof surface you need 37 bundles of standard shingles (3 bundles per square) including 10% waste, or 38 bundles with 15% waste for a roof with hips and valleys. Heavier shingles packed 4 bundles per square need 49 bundles.
How many squares is 1,100 sq ft?
A roofing square is 100 sq ft, so 1,100 sq ft is 11 squares, or 12.1 squares once you add 10% for waste.
Is 1,100 sq ft the house size or the roof size?
Shingles are ordered by roof surface, which is larger than the house footprint because of the slope and overhangs. If 1,100 sq ft is your footprint, multiply it by your pitch factor: at 6/12 the roof is 1,230 sq ft and needs 41 bundles.
How much do shingles for 1,100 sq ft cost?
At typical material prices, shingles for 1,100 sq ft of roof (with 10% waste) cost about $968–$1,452 for 3-tab shingles, $1,210–$1,936 for architectural shingles, $1,936–$3,025 for premium shingles. That is materials only; installation usually costs more than the shingles.