How Many Shingles for a 2,000 sq ft Roof?
Roofing is sold by the square (100 sq ft) and the bundle (roughly a third of a square for architectural shingles). A 2,000 sq ft footprint on a 6/12 pitch is really about 2,236 sq ft of roof โ 22.4 squares before waste. This guide shows the full takeoff including ridge, starter, underlayment, and the flashing most estimates forget.
Step-by-Step Takeoff
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1
True area: footprint ร pitch factor (1.118 for 6/12) = ~2,236 sq ft = 22.4 squares.
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2
Shingles: 22.4 ร 1.1 waste = 24.6 squares โ 74 architectural bundles.
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3
Underlayment: 24.6 squares รท 10 sq per roll = 2.5 โ 3 rolls of synthetic.
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4
Starter strips and drip edge: one bundle of starter plus eave + rake linear feet of drip edge.
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5
Ridge caps, pipe boots, and valley flashing scale with ridge and penetration count โ the Roofing Calculator totals everything.
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6
Valleys get ice-and-water shield (not just felt), and ridge vents need matching intake soffit vents.
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7
Order 10% extra shingles from the same lot for future repairs.
Guide FAQ
How many bundles per square?
Three bundles per square for architectural shingles; four to five for 3-tab.
What waste factor for a cut-up roof?
10% for simple gables, 15%+ for hips, valleys, and dormers.
How much does a 2000 sq ft roof cost to shingle?
Materials roughly $3,000โ$5,000 for architectural shingles; installed totals run $8,000โ$14,000 by region.
Can I layer new shingles over old ones?
One overlay is allowed by most codes if the deck is sound โ but tear-off lasts longer and reveals rot.
How long does it take to shingle 2000 sq ft?
A pro crew does it in 1โ2 days; DIY plan a long weekend plus dumpster time.
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