How Far Apart Do You Put Screws In Metal Roofing

Corrugated roof panels and other exposed fastener metal roofs are usually held together with screws every 18 inches or 2 feet.

How far apart do you put screws in metal roofing.

Secure the screws but do not overtighten. In this example the section of roof is 20 feet wide and 14. Allsteel carries screws in 2 different lengths. Screws are available in quantities of 250.

Follow the proper screw pattern the last common concern when discussing the installation of the purlin system is the screw pattern. 1 inch and 2 inch. Use a 2 500 rpm screw gun for wood and steel substrates that are less than 1 4 inch thick. The 1 inch variety is the best all purpose size.

Proper metal roofing installation begins with the use of the right equipment starting with the screws used to anchor your panels or shingles to the structure. You will want to note your metal roof screw pattern so you know where to look for potential problems. The table below can be used to figure approximate quantities of screws for various purlin spacings and sizes of roofs. How to calculate and place screws.

Measure the section of the roof from the fascia to the peak and divide this by two which is the two foot spacing of the wood nailers. The washer under the screw head should seal to the surface of the panel without bulging or shifting. Absolute steel recommends using metal self tapping screws with thin washers that have been properly compressed to ensure a secure seal. Generally it is best to place each roofing screw about one and half to two feet apart but no more than that.

Place the first screw about 7 inches from the bottom and each subsequent screw about 18 to 24 inches apart along the vertical run. Install the roofing screws vertically along each rib in the panel. Always match the speed of the drill to the substrate or screw type.