How Much Is An Average Roof Surface Area

As such while it can be cumbersome measuring the area and pitch of each part of the roof and multiplying by the corresponding correction factor will result in the most accurate estimate of necessary.

How much is an average roof surface area.

Conventional slope roof range between 4 in 12 and 8 in 12. Annual rainfall in millimetres x roof surface area in square metres roof catchment capacity. How to calculate the roof area using the building square footage the pitch of the roof. Start the project with a roof area calculator.

Calculating the surface area of a sloped roof can be time consuming without the right tools. For instance a 20x100 house with 3 foot overhangs would have 26x106 foot plan on the roof or 2756 sf for a flat roof. While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12. These benefits do not come cheaply though.

A low slope roof is anywhere from 2 in 12 to 4 in 12. Average would not be a real meaningful number depends too much on the overhang and the shape of the house and roof slope. This capacity can be calculated using the following formula. Roughly speaking 1 millimetre of rain over 1 square metre of roof equals 1 litre of water.

You want a roof area calculator that provides accurate estimates to help you order materials such as shingles membrane roofing or ceramic tile. Anything more than 9 in 12 is considered steep.