Allow for a minimum of 18 inches 46 cm if you need to lap to complete the run.
Fixing corrugated metal sheets.
It is important that the maximum support centres given for the type of corrugated sheet being used are not exceeded between purlins.
Cladco offer a range of fixings available to fix into most purlin materials.
Fixing screws should always be screwed into the higher part of the profile when installing corrugated steel roof sheets to purlins and stitch screws are used to stitch the steel sheet to sheet or to fix to steel flashings.
Angle grinder 1 x research source the fastest option.
We stock corrapol stormproof bitumen more.
Wear hearing and eye protection.
Laying the sheets.
If yours do not.
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When fixing through the sheet directly into a timber purlin a 65mm timber tek screw is recommended.
Paint or prime cut edges to prevent rust.
For securing corrugated sheeting longer screws are required as you are fixing into the crown of the sheet.
Buy plastic metal corrugated sheets at toolstation.
Corrugated roofing sheets should be installed into the corrugated sheets crown using a 65mm tek screw with baz washer.
Corrugated metal roofing sheets should always be fitted by over lapping by one corrugation and we always advise to start from left to right of a building.
Stagger the sheets using a half sheet to start the second row.
Corrugated metal profiles for walling applications may be valley fixed providing the sealing element is designed and shaped to ensure a seal against the curved valley profile.
Circular saw 2 x research source slower than angle grinder but follow same step 2 pre drill holes on the ridges.
Some panels have pre drilled holes.
For example fixing into wood a 65mm tek screw with a baz washer is suggested.
Cut the piece large enough to cover the hole and 6 inches of the surrounding roofing each way using sheet metal cutters.
Use a piece of similar style corrugated roofing to patch holes.
Step 1 cut the panels to the desired length.
Commence fixing sheets at the lower edge of the roof at the opposite end to the prevailing winds.
For corrugated sheets the fixings required will depend on the material used in the purlins.