UK Roof Calculators

Online calculators for UK roofers and project planners.

The UK branch of roof-calculators.com covers a variety of categories from cost estimators to measurements.

We gather data from a variety of sources (including roofers direct) across Great Britain to ensure our data is as accurate as possible. We then check and update any prices and calculations weekly to ensure any information presented is as fresh as possible.

Here is our full list of UK roofing calculators arranged by category:

Area

Shed Roof Area

Work out the area of your flat, hipped or gable shed roof.

Pitched Roof Area

Straight gable and hipped roof surface area calculations.

Solar Panel Area

Calculate the number of solar panels that fit on your roof.

Measurements

Roof Slope

Calculate your slope angle, ratio, percentage and length.

Roof Tarp

Protect your roof and calculate the perfect sized tarp.

Rainwater Collection

Measure the amount of rainfall your roof can harvest.

Rafter Length

Get accurate rafter dimensions for your new roof trusses.

Truss Count

Calculate the number of trusses your roof will need (plus costs).

Batten Spacing

Calculate the spacing needed to support your chosen roof covering.

Materials

Sheathing

Calculate the number of plywood or OSB sheets for your deck.

Slate Tiles

Calculate slate tile amount, battens and holing gauge.

Ventilation

Calculate the amount of vents needed and centres for your roof.

Guttering

Gutter Flow Rate

Ensure your guttering can cope with the rainfall intensity.

Gutter Slope/Fall

Calculate the correct gutter fall for perfect drainage.