Measuring Roof For Metal

Learn how to measure your roof to get accurate measurements for a new metal roof.

Measuring roof for metal.

Calculating an area of a triangle when estimating a roof. For trapezoidal roofs measure the bottom edge the top edge also known as the ridge and the distance between the 2 edges. You will need to go up on top. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

You should do this with someone that can hold one end of the tape measure so you can go to the other ends. If the pitch of the roof is not that steep you won t have to worry too much about following. If the roof has a triangular shape stretch your tape measure along the bottom edge then measure from the peak point down to the center of the bottom edge. To help you determine the right size of metal panels for your standing seam metal roofing you have to measure the size of your existing roof.

Get both the length and the width as this will determine the cuts to be made on the metal panels. For example standing seam metal roofing is 24 inches wide. A house shed barn or siding for example. For instance a 38 panel will have an effective coverage width of 36.

How to figure how much metal roofing you need step 1. 1 roof square 100 square feet. Measuring for a metal roof begins with getting a ladder. Space the screws about 12 in 30 cm apart down the entire piece of metal.

View this process step by step here. Use your neoprene washer head screws to secure the metal to the sheathing. See determining roof pitch step 3. Take care the first piece is aligned precisely perpendicular square to the edge.

Enter the diameter of the roof ridge vent gap 1 3 finally enter the coverage area width of the panels you plan to buy. Step 2 prepare the roof for installation of new metal panels. 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. Roughly draw out your roof on a piece of paper.

Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm. We need to know the roof pitch or the slope of the roof. Does your home or building have a porch or areas with different roof pitches that may necessitate transition flashing. What is the metal roof going to be used for exactly.

Measure the length of your roof. Measuring for your metal roof doesn t have to be a pain if you gather some info first. Remember it doesn t have to be to scale or look pretty. This is done by measuring from one outside edge of your roof to the opposite.

Step 1. The length l times the height h of a triangle is twice its area a2.