Estimate Roof Size From Floor Plan

Multiply by the square footage of a single floor of your house.

Estimate roof size from floor plan.

These benefits do not come cheaply though. The roof below is drawn in 1 8 scale this means that if using a regular tape measure that 1 inch would equal 8 feet. Conventional slope roof range between 4 in 12 and 8 in 12. A low slope roof is anywhere from 2 in 12 to 4 in 12.

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. A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof. In this drawing a 1 8 scale ruler is being used. Anything more than 9 in 12 is considered steep.

Now based on the info provided your home s floor plan is roughly 1 000 sq ft. Steeper sloped roofs are considered more aesthetically pleasing and last longer. From the diagrams there are two intersecting roofs measuring 114 feet and 30 feet at the eaves with equal rake of 18 feet. So continuing our example if you ve got a two story house with a total square footage of 2 700 square feet with each floor having.

This is a rather complicated way to estimate a roof area and hardly suited to the diy fans.