Fixing Corrugated Metal Roofing Sheets

As with all of the fixing screws provided you can use a colour cap to hide the stainless steel head.

Fixing corrugated metal roofing sheets. Corrugated roofing sheets should be installed into the corrugated sheets crown using a 65mm tek screw with baz washer. Corrugated roof sheets. The overlaps ends and sides depends upon the sloop of the roof. Corrugations should run in a straight line between the highest and lowest points and at a right angle to the purlins the intermediate supports.

Usually fixed in the 2nd 5th and 8th corrugation on the 8 3 and 2nd 6th and 10th corrugation on the 10 3 to have a symmetrical appearance and a strong holding into the purlins. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas. Fixing and securing sheets. A corrugated metal roof is quieter than pvc when it rains.

To avoid moisture entering laps by water action metal sheets are slightly modified to manage this problem. Multiply the two measurements together to get the total area of the roof. The main fixings are used to transfer all the loads acting on the cladding back to the supporting structure and to form a watertight seal. When i built my garden shed in 1987 i used onduline corrugated roofing following the.

When purchasing the pvc corrugated sheets remember that the sheets need to overhang the verge of the roof by 2 inches. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms. Sheets must be properly affixed according to the type of sheeting you re using. All profiles are designed for only one rib to be overlapped to ensure the water tightness.

Crest fixing and side lapping. Fixing screws are highly recommended to screw through the castle of the sheet as shown. Corrugated sheet roofing. We recommend the use of our self drilling tek screws with 5 16 hexagon heads and 19mm sealing washers for fixing your roof.

The general advice for fixing is 4 5 screws across the sheets purlin we advise using 1 screw on the overlap of the next sheet. Here i show you how easy it is to re roof a shed with onduline roofing. We stock corrapol stormproof bitumen more. Under the head is a 19mm stainless steel washer with a bonded neoprene pad that compresses to create a seal with the roof sheet.

Also each sheet overlaps the next as it is laid horizontally and by 2 inches vertically. The screws can be fitted through the trough or pan sections of a sheet s profile or if fixing corrugated sheets through the crest of the sheet s profile using a longer screw and a soft baz washer. Measure the length and width of the roof by using a tape measure.