How To Install PVC Corrugated Sheets
Want to know how to install PVC corrugated sheets? Follow our simple step-by-step guide below! Please note that this guide applies to both our 1.1mm thick clear corrugated sheets as well as our 1.3mm super weight sheets.
PVC Corrugated Sheets Installation Guide
- Before you begin your installation, first ensure that you have all of the materials that you require. This includes the corrugated sheets themselves, as well as flashings, eaves fillers and fixings. For tools, if cutting the sheets is required for your project, the best tool for the job is a circular saw or an angle grinder, however a fine-toothed saw can also be used. You should also have a drill on hand for pre-drilling the sheets for fixings, but more on that later!
- To begin the installation, start by arranging your sheets on your roof and then marking areas where holes will need to be drilled and where any potential cuts will need to be made. When placing your sheets, they should overhang the roof by approximately 60mm in order to allow rainwater to smoothly run off into the gutter and should also be wide enough to the barge board at the side. We also advise that individual sheets overlap by at least one corrugation and to start from left to right when placing sheets.
- Make any necessary cuts to the sheets you have laid out. If you are using a fine-toothed saw instead of one of the previously mentioned power tools, we would recommend sawing at a shallow angle and applying light pressure in order to make the cleanest cuts. A tip for making cutting easier is to sandwich said sheet between two other sheets and have the part that needs to be removed protruding. You can minimise vibrations from the sheet by supporting it whilst sawing.
- After all cuts have been made, it is time to pre-drill your sheets with holes for fixings in the areas that you previously marked. The size of the hole should be slightly larger than the fixing in order to accommodate potential expansion. Drilling should be done individually with a masonry bit; applying light pressure and using a low drill speed. Whilst drilling, support the sheet under each hole position. For each support across the width of a sheet, you should use at least five fixings.
- Before fixing the sheets to your roof, fit the wall flashing at the top of the slope and ensure that it is secured firmly.
- Insert foam eaves fillers underneath the sheets at all support positions. These will not only prevent roof chatter but will also support the sheets while you are fixing them.
- Secure the sheets to the roof using the fixings and pre-drilled holes. Ensure that the fixing screws are secured tightly and place the caps on the screws. If any sheets require being joined end-to-end, you should create an overlap of at least 150mm if your roof features a 5-degree slope, and 300mm if there is a 10-degree slope.