Fixing Metal Roof Sheets

Corrugated roofing sheets should be installed into the corrugated sheets crown using a 65mm tek screw with baz washer.

Fixing metal roof sheets.

If you find any remove rust with a wire brush and or steel wool. The exact type of fixings required will depend on the roofing sheet and purlin type either timber light steel or heavy steel however we recommend self drilling tek type screws with a 5 16th hex head for optimum performance. Remove roofing and turn each sheet over. What was previously a valley in the corrugations will now be a ridge and the nail hole will be in the correct place.

This means that the screw will drill its own hole through the metal roofing panel and into the metal or wood substrate. Then prime the surface with a metal primer and follow up with a top coat to match the color of the roof. If fixing screws are left in the valleys your roof will leak in hundreds of places. If you asked two installers whether they pre drill metal roofing sheets prior to installation you would likely get two completely different answers.

You will have to paint the roof but is cheaper than buying new roofing. Some of these materials are subject to oxidation. 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. As with all of the fixing screws provided you can use a colour cap to hide the stainless steel head.

These include steel aluminum tin copper and zinc. The screws that are used to attach the metal roofing are self drilling screws. 2 look for holes rust patches or other signs of deterioration. Metal roofs are made from a wide variety of materials.

Most metal roof panels are made from sheet metal that has been coated with a protective surface. Pull and re nail them.