These can transform your home, adding character and providing protection against harsh weather conditions. Their unique ridged design adds to their robustness, allowing water to flow off the roof.

From selecting the right materials to mastering the installation techniques, Beesley and Fildes will guide you through essential safety tips, necessary equipment, and a step-by-step guide to installing corrugated roof sheets.

Pre-installation Safety Tips

Before getting started, ensure that you wear PPE, such as rigging gloves, eye protection, and steel-capped boots.

Ensure that any ladders or scaffolding that you use to access the roof is sturdy and stable. We advise against working in wet weather conditions to prevent slipping hazards or injury.

Practice safe lifting techniques, using your legs to lift rather than your back, and avoid twisting movements.

Materials and Tools Needed

You will need to gather the necessary equipment. This includes:

Materials

Corrugated roofing sheets
Roofing screws
Underlayment
Flashing and ridge caps
Eaves filler
Sealant

Tools

Drill
Tape measure
Fine toothed-saw or metal shears
Screwdriver
Ladder
Straight edge or carpenter’s square
Aviation snips or tin snips
Caulking gun

A Step-by-Step Guide to Installing Corrugated Roofing Sheets

Once you have prepared your tools and materials, it’s time to get into the installation process.

1. Preparing the Roof

Inspect the roof for damage, structural weakness, or rot. Ensure that the rafters and trusses can support the corrugated roofing sheets.

Remove the old roofing and repair or replace any damaged materials to prevent an unstable structure. This includes old shingles, tiles, or metal sheets.

2. Install the Underlayment

Choose between felt paper, synthetic underlayments, or self-adhering membranes for your corrugated roofing sheets.

Start from the bottom edge of the roof and roll out the underlayment. Overlap each row and use staples or roofing nails to secure the material in place.

3. Measuring and Cutting

Use a tape measure to measure the length and width of the roof. Calculate how much overhand you will need This is typically between 50-70mm.

The overlap required for your roofing sheet should be around one corrugation in width. Your measurements will indicate how many sheets you will need for the roof.

Use a straight edge and marker to label the measurements. When cutting the sheets, use tin snips or metal shears for metal sheets and a fine-toothed saw for polycarbonate or PVC. For straight cuts, move along the marked line and for curved cuts, opt for tin snips.

Use a metal file to deburr the sharp edges of the sheets.

4. Install the First Sheet

Starting at the corner of the roof, align the sheet with the side and bottom edges of the roof. Don’t forget to lay the sheet so that it’s slightly overhanging the roof by 50-70mm.

Then, secure the roof in place with roofing screws, positioning them at the top of the sheet's corrugations. Place each screw around 200-250mm apart from each other along the sides and upper edge of the sheet where it overlaps the roof's structure.

For a quicker process, pre-drill holes in each sheet beforehand.

5. Overlap the Sheets

Overlapping the sheets helps the water drain from the roof. To do this, position the second sheet so that it overlaps the first one you installed.

For shallower roofs, create a bigger overlap to prevent the risk of water ingress. Use a string line to ensure the sheets are straight.

6. Secure the Sheets

When securing the corrugated roof sheets, use galvanised steel or aluminium screws for a durable roof.

Use a power drill with a screwdriver bit to secure the screws into the roofing sheet. Make sure they penetrate into the roof framing or purlins. Don’t over-tighten the screws, as this can damage the structure.

7. Add the Flashing and Ridge Cap

For extra protection, add step flashing, apron flashing, and valley flashing onto the roof.

Complete the steps below:

Step flashing: Lay individual pieces of step flashing around the chimney and walls. Place this in steps that align with the courses of roofing material.
Apron flashing: Install this where the roof slope meets a vertical surface.
Valley flashing: Place this in the valleys where two roof planes meet.

Once this has been installed, add roofing cement under the flashing edges, fastening it with roof nails to prevent moisture build-up.

Then, measure the roof ridge to determine how much ridge cap is needed. Pre-drill holes into the ridge cap for the screws. Start at one end of the ridge and overlap each piece by 150mm.

Lastly, drive washer screws into the peaks of the grooves on the last row of roofing sheets. Place these on either side of the ridge. Your roof is now complete!

Purchase Corrugated Roof Sheets Today With Beesley and Fildes

At Beesley and Fildes, our products are manufactured to the highest standard to ensure safety and efficiency when carrying out construction work.

Our corrugated roof sheets are reliable and easy to install, serving as a great addition to commercial and residential buildings.

Browse our building materials today or contact us now for more information.