How Far Apart Do You Put Screws In Metal Roofing

Absolute steel recommends using metal self tapping screws with thin washers that have been properly compressed to ensure a secure seal.

How far apart do you put screws in metal roofing. You will want to note your metal roof screw pattern so you know where to look for potential problems. Install the roofing screws vertically along each rib in the panel. Always match the speed of the drill to the substrate or screw type. 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.

The washer under the screw head should seal to the surface of the panel without bulging or shifting. Place the first screw about 7 inches from the bottom and each subsequent screw about 18 to 24 inches apart along the vertical run. How to calculate and place screws. The screws need to be placed every 2 on center as like the diagram below but also the screws need to be doubled at every on center location.

Screws are available in quantities of 250. 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. Follow the proper screw pattern the last common concern when discussing the installation of the purlin system is the screw pattern.

The table below can be used to figure approximate quantities of screws for various purlin spacings and sizes of roofs. Proper tools not only is it crucial to have proper metal roofing screws but using a proper screw gun such as one powered by an air compressor will ensure safety as well as a strong finished look. Secure the screws but do not overtighten. 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.

1 inch and 2 inch. Allsteel carries screws in 2 different lengths. In this example the section of roof is 20 feet wide and 14.