How Many Screws To Install Metal Roofing

The table below can be used to figure approximate quantities of screws for various purlin spacings and sizes of roofs.

How many screws to install metal roofing.

How to calculate and place screws. The main cause of a leaking roof on a diy metal roofing installation is incorrectly fastening the screws. Quite often the screws are over tightened or under tightened and when this happens it creates leak points. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

There are two schools of thought when it comes to corrugated metal roofing screw placement both are correct. Set the drill s direction indicator to the forward or clockwise position. The advantage to this method is the screws are exposed to less water and debris. Your roof will have thousands of screw holes.

In many cases it makes sense to remove an old or dilapidated roof and install a metal roof that is better able to withstand the elements. Preventing leaks lengthens a roof s life. You will also need a large garbage can a jigsaw or power metal shear a staple gun a drill and assorted drill bits 1 inch roofing nails metal roofing screws and self drilling self sealing wood screws. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles.

Absolute steel recommends using metal self tapping screws with thin washers that have been properly compressed to ensure a secure seal. Screws are available in quantities of 250. Installing the metal roofing screw in the high of the corrugated roofing panel as shown below. Allsteel carries screws in 2 different lengths.

The 1 inch variety is the best all purpose size. Install the roofing screws vertically along each rib in the panel. Many newer metal roofs are built with exposed fasteners which can leak if the metal roof installation guide is not carefully followed. Install a magnetic driver bit of the requisite size for the heads of your metal roofing screws into a power drill.

The roofing is manufactured in panels that install using aluminum nails or screws that. 1 inch and 2 inch. A metal roof is a long lasting roof but checking the screws for damages is an important part of metal roof maintenance. You will most likely have to order the roofing metal in the amount and color specific to your house.