How To Measure Roof Size

Use our rainwater calculator to estimate your average annual catchment potential.

How to measure roof size.

Outside of the u s a degree angle is typically used. If this distance measures 4 inches you have a 4 in 12 pitch. The downspout size must suit the bottom width of the gutter. You will need to express this size in terms of square feet.

Finding the total roof area. This depends on the size of your roof area. Measure the flat footprint area covered by the roof or by each roof segment. This can be done by multiplying the length in feet by the width in feet to get the area measurement.

Then determine the area of the roof as if it were flat. Once the area of the roof s footprint is known the overall roof area can be found by accounting for the pitch of the roof. Roof drain system and size the scuppers denoting the required head of water above the scupper for the structural engineer. If you were to click on the peaks it wouldn t give you an accurate reading of your measurement.

In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. A new roof costs 4 000 to 10 000 on average and varies on the shingle material used and several factors. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.

To measure a roof start by measuring the length and width of the building s exterior walls and multiplying them to get the area. Enter your annual rainfall average a peak monthly average for the amount you can catch in a stormy month or a. 1 in 25 4 mm 1 ft 305 mm 1 ft2 0 0929 m2 100 0 figure a101 1 example roof plan 4 a 101 2 solution. Thus in a simple style house you ll only have to click on the corners.

Pitch measurement method 1 1. Check that your footage measurements are within this range so you can start off on the right foot. Remember that the length and width need to be found for the roof not the house so take into account that the roof overhangs the building. Outline the roof at the points that are on the same level or elevation to ensure that you re getting an accurate calculation of your roofing measurements.

Next you will need to use a roofing materials calculator. Once an architect has determined the kind of roof he intends to use he must give equal attention. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Pitch is not a factor.

Calculate the price of your roof replacement. Design of roof drainage systems roof drainage the roof is one of the most essential parts of a building as it protects occupants contents and interior of the structure from the elements.