Corrugated Sheet Fixing Detail

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.

Corrugated sheet fixing detail.

The sheets should be laid to ridge apex to ensure sufficient weathering cover is provided. Start alternate courses of sheets with a half width sheet. Corrugated roofing sheets should be installed into the corrugated sheets crown using a 65mm tek screw with baz washer. Step 2 position and fix an additional purlin at the ridge to take ridge fixings.

For corrugated sheets the fixings required will depend on the material used in the purlins. Stagger the sheets using a half sheet to start the second row. This forms a broken bond sheet pattern thus avoiding a 4 ply sheet thickness build up at the corners of sheets. A corrugated metal roof is quieter than pvc when it rains.

Obtain some roofing mesh and cut out 2 identical square patches. Cladco offer a range of fixings. Patching materials for metal corrugated roofing sheets urethane roof cement is an excellent product that can help you patch holes on corrugated metal roofing. Commence fixing sheets at the lower edge of the roof at the opposite end to the prevailing winds.

It is important that the maximum support centres given for the type of corrugated sheet being used are not exceeded between purlins. The bottom end of the sheets you can fix in each trough to help prevent wind uplift of the sheets. To fix the sheets each tileform sheet has 5 troughs for securing we recommend you fix the sheet into trough 1 3 and 5. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.

Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas.