屋面瓦计算器
免费沥青瓦计算器：按平面面积、坡度（每 12 英寸升起）与损耗估算方与捆数。
结果
24.6建议订购方数
- 22.36精确方数（未计损耗）
- 2236.07屋面展开面积
- 1.12所用坡度系数
- 74建议购买捆数
计算原理
坡度系数 = √(1 + (升高÷12)²)。屋面面积 = 平面面积 × 系数。平方数 = 面积 ÷ 100 × (1 + 损耗%)。捆数 = ceil(平方数 × 每方捆数)。
计算示例
Example: 2,000 sq ft plan area, pitch factor 1.12, 10% waste, 3 bundles/square → about 24.6 squares and 74 bundles.
What is a square?
One roofing square = 100 sq ft of roof surface. Suppliers price many shingles by the square or by the bundle.
Pitch factor
Steeper roofs have more surface than the building footprint. Common factors range about 1.05–1.3—use a pitch chart or measure slope.
Bundles per square
Three bundles per square is common for architectural shingles, but always check the wrapper.
常见问题
How many shingle bundles do I need?
Convert roof area to squares with pitch and waste, then multiply by bundles per square. This calculator performs those steps.
What pitch factor should I use?
Look up your roof pitch (e.g. 6/12) on a surface-area factor chart, or have a roofer measure. Do not guess on complex roofs.
Does this include underlayment?
No—only shingle squares/bundles. Underlayment and ridge cap are separate takeoffs.
结果仅为估算。购买前请核对覆盖率与当地要求。不能替代专业建议。