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Vistalux Corrugated Plastic Roof Sheet Installation Guides

1. Preparation

For a Car Port or Lean Too installation you will need:
A minimum slope of 5 degrees is essential in any structure to ensure water run-off (10 degrees or more is better)

2. Cutting Sheets

Arrange the sheets loosely on the roof, mark hole positions and any necessary saw cuts with a felt tip pen.
Sheets should overhang the roof by 60mm to allow rainfall to run-off into the gutter and should be wide enough to cover the barge board at the side.
If cutting is required use an angle grinder with a metal slitting blade or fine tooth saw at a shallow angle with light pressure. Support the sheet to minimise vibrations.
A good tip when cutting is to sandwich the sheet between other sheets with the part to be removed protruding.
If a sheet has to be cut to a finished width, make the cut in the slope of the corrugated sheet.
Avoid drilling and cutting sheets in very cold weather. Warm sheets will be less prone to damage. If possible store sheets in a warm room before cutting.

3. Drilling Sheets

Pre-drill sheets before fixing. Please note - holes for fixings must be drilled larger than the fixing to allow for expansion. Typically 10mm for a 3mm sheet.
Drill sheets singly with a masonary bit using a low speed drill and light pressure. Support the sheet securely under each hole position when drilling.
There should be at least 5 fixings per support across the width of the sheet.

4. Flashing

Vistalux wall flashing to match the sheet corrugation is installed at the top of the slope. The Wall Flashing is fixed firmly into position with Butyl wall flashing tape to form a watertight seal between the sheet and the wall.

5. Fixing

Start fixing the sheets.
Ariel foam fillers are used under the sheets at all support positions to prevent roof 'chatter' and to support the sheets when fixed.
Use Ariel screws, caps and washers to secure the sheet: the screw is sufficently tight when the washer under its head can just be rotated with the finger and thumb.

6. Joining Sheets (end to end)

If sheets need to be joined end to end, ensure an overlap of at least 150mm for a 10 degree slope or 300mm for a 5 degree slope.
Use a strip of Butyl Sealing Tape to prevent dust and dirt getting between the sheets.

Corrugated PVC Sheet Installation Guide

How to install a PVC Carport

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