🏠 Roofing

13 calculators

Tiles, flat roofs, fascia, guttering, flashing and insulation.

Tiles per m², battens and underlay for pitched roofs.

Membrane, insulation, vapour barrier and upstands for flat roofs.

Rafters, purlins, ridge board and hip/valley rafters.

uPVC or timber fascia and soffit lengths with ventilation strips.

Gutter lengths, outlets, downpipes and brackets.

Lead codes, linear metres and dressing allowance.

Mineral wool or PIR depth to meet U-value targets.

Structure, cladding, flashing and window opening for dormers.

Material rolls, overlap and adhesive for flat roofing membranes.

Ridge and hip lengths, tiles, mortar and dry fix kits.

Opening sizes, flashing kits and trimmer requirements.

Tile, ridge and soffit vents — free area requirements.

Complete materials list for roof construction.

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