Estimates the volume and quantity of insulation material for a roof.
The roof insulation calculator works out how many packs of mineral wool you need from the roof area, allowing for the number of layers and a waste margin.
Packs = ⌈area × layers × (1 + waste%) / pack coverage⌉ A standard Knauf/Isover pack covers ≈ 5.76 m².
100 m² of roof, 1 layer of 100 mm, 10% waste, 5.76 m² packs. Total area: 100 × 1.1 = 110 m². Packs: ⌈110 / 5.76⌉ = 20 packs.
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