Roofing Calculator

Roofing assistant

Describe your roof in your own words and the assistant builds the estimate for you.

Guided assistant

House length (m) House width (m) Eave overhang (cm)

Measure the outside walls. The footprint of a two-storey house is the ground floor only, not the total living area.

Pitch (degrees) Storeys

Colour

Existing roof Replace boards / OSB sheets (pcs)

New breathable underlay membrane on the whole roof

Rotten boards or OSB sheets are found only after the old covering is removed; most roofs need 0–10 sheets.

Edge flashings (m) Ridge with ventilation (m) Gutters Gutters (m) Downpipes (m) Chimney flashing (pcs) Roof window flashing (pcs) Vent outlets (pcs)

Scaffolding and safety equipment

Lengths fill in automatically from the size in step 2 until you type your own.

Installed estimate

€0.00