How Much Is An Average Roof Surface Area

This capacity can be calculated using the following formula.

How much is an average roof surface area.

These benefits do not come cheaply though. A low slope roof is anywhere from 2 in 12 to 4 in 12. So you re thinking of reroofing the house yourself and want an estimate for how much roofing material you. Steeper sloped roofs are considered more aesthetically pleasing and last longer.

For instance a 20x100 house with 3 foot overhangs would have 26x106 foot plan on the roof or 2756 sf for a flat roof. Calculating the surface area of a sloped roof can be time consuming without the right tools. Roughly speaking 1 millimetre of rain over 1 square metre of roof equals 1 litre of water. 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.

Annual rainfall in millimetres x roof surface area in square metres roof catchment capacity. Anything more than 9 in 12 is considered steep. Start the project with a roof area calculator. How to calculate the roof area using the building square footage the pitch of the roof.

You want a roof area calculator that provides accurate estimates to help you order materials such as shingles membrane roofing or ceramic tile. Average would not be a real meaningful number depends too much on the overhang and the shape of the house and roof slope.