Roof Length Width

The rafter member will be longer.

Roof length width.

Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. The width is measured simply straight across the top of. The first step in a free roofing estimate is measuring the roof dimensions. To get results you need to provide roof base dimensions length and width and roof pitch we assume it is identical for all sides.

This data allows us to calculate the roof triangle as we know two sides b and c of the three sides of a right triangle the red lines in our photo at above left. If you plan to have overhang etc. The metal roof length calculator calculates the distance from peak to trim so add the length you want the roof metal to extend beyond the eave trim. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.

Let b the vertical rise in the roof and c the roof length building length gable overhangs. Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements. Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof. You will need to express this size in terms of square feet.

All formulae are below the calculator. For instance a 38 panel will have an effective coverage width of 36. The base width is the distance from one corner of your roof to the other at its base on the short side of your house. First measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface.

Length and width standard lengths for corrugated roofing are 8 10 and 12 feet. The base length is simply the distance from the second corner to the third corner on the house s long side. 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. Our roof calculator uses base length and base width to find the estimated area.

For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4. If its pitch is 6 in 12 a pitch multiplier of 1 12 multiplying 1 152 sq ft 107 0 m 2 by 1 12 would give you an overall square footage of 1 290 square feet 120 m 2. Enter the diameter of the roof ridge vent gap 1 3 finally enter the coverage area width of the panels you plan to buy. The width varies greatly depending on the style of roofing.