Estimate Roof Size From Floor Plan

Assuming a single story rectangular house with a hip roof that has two foot overhangs on each side of the house we have approximately 13 squares or 1 300 square feet of 2d roof surface area.

Estimate roof size from floor plan.

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. A low slope roof is anywhere from 2 in 12 to 4 in 12. The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof.

Multiply by the square footage of a single floor of your house. In this drawing a 1 8 scale ruler is being used. These benefits do not come cheaply though. 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.

From the diagrams there are two intersecting roofs measuring 114 feet and 30 feet at the eaves with equal rake of 18 feet. Anything more than 9 in 12 is considered steep. Conventional slope roof range between 4 in 12 and 8 in 12. The next thing to determine is the roof pitch see how to determine roof pitch the easiest and most accurate method to measuring a roof plan is to square everything off.

Now based on the info provided your home s floor plan is roughly 1 000 sq ft.