How to properly lay and screw corrugated sheets

Corrugated sheets are cheap and easy to install means for roofing garden sheds, carports or shelters. They can be fastened simply by screwing. However, you should use the correct screws.

Install corrugated sheets of different materials on a substructure

Before laying the corrugated sheets, you should inform yourself about the different materials from which the sheets are made. There are differences, although the materials are visually similar. Corrugated sheets made of polycarbonate or acrylic glass are most commonly used. In the construction, the different plates do not differ further. However, it is important that you build a suitable substructure on which the plates can be attached later. Pay particular attention to a transverse battens with the correct spacing of the individual slats, with which the plates are screwed later. Only use warp-free wood, otherwise cracks or cracks may occur in the boards. This is especially true if you use acrylic sheets.

The support of the corrugated sheets at regular intervals

There are different materials, because the plates are made. Accordingly, the support distances of the mounting slats for the corrugated sheets are different:

  • Sheets of PVC or polyester require a support distance of about 50 centimeters.
  • If you use polycarbonate or acrylic sheets, choose a distance of about 80 centimeters, which is sufficient in this case.

Keep in mind, however, that these values ​​apply only to average snow or wind loads. If greater environmental impacts are to be expected, reduce the distance a bit.

Mount the corrugated sheets correctly and screw them together

The corrugated plates are fastened to the substructure with suitable screws. Only use the so-called tapping screws for fixing the corrugated sheets, as these are the most suitable ones. They already contain matching sealing washers and thus enable a watertight screw connection. In addition, the materials of the screws are resistant to weathering or corrosion. They are therefore best suited for use in connecting plastic to a wooden substructure. When drilling the mounting holes you should use a conical drill to avoid cracks in the holes. You should drill the holes 3 to 4 millimeters larger than required for the diameter of the screws.

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Video Board: Installing A Corrugate Roof (Part 1)