How Far Apart Do You Put Screws In Metal Roofing

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.

How far apart do you put screws in metal roofing.

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. 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. Secure the screws but do not overtighten. 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. Corrugated roof panels and other exposed fastener metal roofs are usually held together with screws every 18 inches or 2 feet. Absolute steel recommends using metal self tapping screws with thin washers that have been properly compressed to ensure a secure seal. 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.

The table below can be used to figure approximate quantities of screws for various purlin spacings and sizes of roofs. You will want to note your metal roof screw pattern so you know where to look for potential problems. The washer under the screw head should seal to the surface of the panel without bulging or shifting. Generally it is best to place each roofing screw about one and half to two feet apart but no more than that.

Always match the speed of the drill to the substrate or screw type. When you decide to screw down a metal roof it s important that you have the screw gun set to the correct drill speed settings. How to calculate and place screws. The 1 inch variety is the best all purpose size.

In this example the section of roof is 20 feet wide and 14. Place the first screw about 7 inches from the bottom and each subsequent screw about 18 to 24 inches apart along the vertical run. Screws are available in quantities of 250.