How Many Bundles of Shingles for 1,200 sq ft?
1,200 sq ft of roof surface is 12 roofing squares. With 10% waste and standard 3-bundle-per-square shingles you need 40 bundles. If 1,200 sq ft is the house footprint rather than the roof, multiply by the pitch factor first: at a 6/12 pitch that becomes 45 bundles.
Bundles for 1,200 sq ft of roof by waste factor
| Waste | Squares | 3 bundles / square | 4 bundles / square |
|---|---|---|---|
| 5% (simple gable) | 12.6 | 38 | 51 |
| 10% (typical) | 13.2 | 40 | 53 |
| 15% (hips & valleys) | 13.8 | 42 | 56 |
| 20% (complex, cut-up) | 14.4 | 44 | 58 |
If 1,200 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 | 1,237 sq ft | 13.6 | 41 |
| 4/12 | 1,265 sq ft | 13.9 | 42 |
| 5/12 | 1,300 sq ft | 14.3 | 43 |
| 6/12 | 1,342 sq ft | 14.8 | 45 |
| 7/12 | 1,389 sq ft | 15.3 | 46 |
| 8/12 | 1,442 sq ft | 15.9 | 48 |
| 9/12 | 1,500 sq ft | 16.5 | 50 |
| 10/12 | 1,562 sq ft | 17.2 | 52 |
| 12/12 | 1,697 sq ft | 18.7 | 57 |
3 bundles per square, 10% waste. Don't know your pitch? Measure it with the Pitch Gauge.
Shingle cost for 1,200 sq ft
| Shingle type | Material per square | Total for 1,200 sq ft (+10%) |
|---|---|---|
| 3-tab shingles | $80–$120 | $1,056–$1,584 |
| Architectural shingles | $100–$160 | $1,320–$2,112 |
| Premium shingles | $160–$250 | $2,112–$3,300 |
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 4,224 with a standard 4-nail pattern, or 6,337 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 1,200 sq ft?
For 1,200 sq ft of roof surface you need 40 bundles of standard shingles (3 bundles per square) including 10% waste, or 42 bundles with 15% waste for a roof with hips and valleys. Heavier shingles packed 4 bundles per square need 53 bundles.
How many squares is 1,200 sq ft?
A roofing square is 100 sq ft, so 1,200 sq ft is 12 squares, or 13.2 squares once you add 10% for waste.
Is 1,200 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 1,200 sq ft is your footprint, multiply it by your pitch factor: at 6/12 the roof is 1,342 sq ft and needs 45 bundles.
How much do shingles for 1,200 sq ft cost?
At typical material prices, shingles for 1,200 sq ft of roof (with 10% waste) cost about $1,056–$1,584 for 3-tab shingles, $1,320–$2,112 for architectural shingles, $2,112–$3,300 for premium shingles. That is materials only; installation usually costs more than the shingles.