How To Lay Bitumen Corrugated Roof

You may need to cut panels to fit angles using a circular saw with a metal saw blade.

How to lay bitumen corrugated roof. The corrugation should run up the roof toward the ridge. Secure the edge of the sheet at the gutter end every second corrugation. Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart. You can find the most recent onduline fixing guide on our website where you can save money on buy onduline roofing sheets http bi.

Btm corrubit installation video. Sorry for the old video. When i built my garden shed in 1987 i used onduline corrugated roofing following the. Install the panel so that the short lip overlaps the large lip.

Continue adding panels until the roof is covered. Make sure you space these fasteners every three to four corrugations. Reduce the fixing centre to the first purlin up. Ensure the sheets are positioned square to the line of the eaves and verge first nailing the sheet edges.

After clearing the roof from dirt and obstruction it is time to put the roofing felt on the roof. Use cap nails and hammer them attaching the nails on the felt and the concrete. Here i show you how easy it is to re roof a shed with onduline roofing. Leave approximately 6 to 8 inches between nails.

Be sure before you fasten the roofing itself however that you lay down closure strips underneath where the screws will go. Then attach the drip end flashings 8 to 12 inches apart. Fitting sheets step 1. Screw the new panel in place as described.

The silicone will spread and adhere creating a seal. Trim any excess with shears. Seal the sides of the corrugated bitumen sheets with foam strips or spray foam. Place it at one bottom corner allowing an overhang of two inches on each edge.

Get help to lay the first sheet onto the roof. Overhang the sheets at the fascia by 5cm to form a drip edge. To install corrugated roofing start by cutting your panels to length with an angle grinder. Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses.