How Many Bundles of Shingles for 3,500 sq ft?
3,500 sq ft of roof surface is 35 roofing squares. With 10% waste and standard 3-bundle-per-square shingles you need 116 bundles. If 3,500 sq ft is the house footprint rather than the roof, multiply by the pitch factor first: at a 6/12 pitch that becomes 130 bundles.
Bundles for 3,500 sq ft of roof by waste factor
| Waste | Squares | 3 bundles / square | 4 bundles / square |
|---|---|---|---|
| 5% (simple gable) | 36.8 | 111 | 147 |
| 10% (typical) | 38.5 | 116 | 154 |
| 15% (hips & valleys) | 40.3 | 121 | 161 |
| 20% (complex, cut-up) | 42 | 126 | 168 |
If 3,500 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 | 3,608 sq ft | 39.7 | 120 |
| 4/12 | 3,689 sq ft | 40.6 | 122 |
| 5/12 | 3,792 sq ft | 41.7 | 126 |
| 6/12 | 3,913 sq ft | 43 | 130 |
| 7/12 | 4,052 sq ft | 44.6 | 134 |
| 8/12 | 4,206 sq ft | 46.3 | 139 |
| 9/12 | 4,375 sq ft | 48.1 | 145 |
| 10/12 | 4,556 sq ft | 50.1 | 151 |
| 12/12 | 4,950 sq ft | 54.4 | 164 |
3 bundles per square, 10% waste. Don't know your pitch? Measure it with the Pitch Gauge.
Shingle cost for 3,500 sq ft
| Shingle type | Material per square | Total for 3,500 sq ft (+10%) |
|---|---|---|
| 3-tab shingles | $80–$120 | $3,080–$4,620 |
| Architectural shingles | $100–$160 | $3,850–$6,160 |
| Premium shingles | $160–$250 | $6,160–$9,625 |
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 | 4 |
| #15 felt | 400 sq ft | 10 |
| #30 felt | 200 sq ft | 20 |
Nails: about 12,320 with a standard 4-nail pattern, or 18,480 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 3,500 sq ft?
For 3,500 sq ft of roof surface you need 116 bundles of standard shingles (3 bundles per square) including 10% waste, or 121 bundles with 15% waste for a roof with hips and valleys. Heavier shingles packed 4 bundles per square need 154 bundles.
How many squares is 3,500 sq ft?
A roofing square is 100 sq ft, so 3,500 sq ft is 35 squares, or 38.5 squares once you add 10% for waste.
Is 3,500 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 3,500 sq ft is your footprint, multiply it by your pitch factor: at 6/12 the roof is 3,913 sq ft and needs 130 bundles.
How much do shingles for 3,500 sq ft cost?
At typical material prices, shingles for 3,500 sq ft of roof (with 10% waste) cost about $3,080–$4,620 for 3-tab shingles, $3,850–$6,160 for architectural shingles, $6,160–$9,625 for premium shingles. That is materials only; installation usually costs more than the shingles.