Roofing for 25 m²
10 percent waste, 3 bundles per square.
Squares
3
Bundles
9
squares = 25 ÷ 9.29 × 1.10 = 3
About 269 sq ft of roof.
Open the Roofing CalculatorAbout this estimate
One roofing square is about 9.29 square metres, and shingles run three bundles per square. Use the sloped roof area and add 10 percent for waste.
On the roof? Knee pads make a long day on a pitched roof easier.
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Common questions
How many bundles for a 25 square metre roof?
About 3 squares with waste, roughly 9 bundles, since one square is about 9.29 square metres.
Do I use the sloped area?
Yes. Measure the actual sloped roof planes, which are larger than the building footprint.
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