How To Lay Bitumen Corrugated Roof

The corrugation should run up the roof toward the ridge.

How to lay bitumen corrugated roof. Use cap nails and hammer them attaching the nails on the felt and the concrete. Get help to lay the first sheet onto the roof. Continue adding panels until the roof is covered. Btm corrubit installation video.

When i built my garden shed in 1987 i used onduline corrugated roofing following the. Fitting sheets step 1. You may need to cut panels to fit angles using a circular saw with a metal saw blade. Reduce the fixing centre to the first purlin up.

To install corrugated roofing start by cutting your panels to length with an angle grinder. Overhang the sheets at the fascia by 5cm to form a drip edge. After clearing the roof from dirt and obstruction it is time to put the roofing felt on the roof. You can find the most recent onduline fixing guide on our website where you can save money on buy onduline roofing sheets http bi.

Seal the sides of the corrugated bitumen sheets with foam strips or spray foam. Ensure the sheets are positioned square to the line of the eaves and verge first nailing the sheet edges. Place it at one bottom corner allowing an overhang of two inches on each edge. Make sure you space these fasteners every three to four corrugations.

Leave approximately 6 to 8 inches between nails. Position and fix the verge barge board. Secure the edge of the sheet at the gutter end every second corrugation. Trim any excess with shears.

Be sure before you fasten the roofing itself however that you lay down closure strips underneath where the screws will go. Here i show you how easy it is to re roof a shed with onduline roofing. Metal roofing is also available in the form of shingles. Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart.

Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses. Secure the sheets to the roof by using stainless steel fasteners. Install the panel so that the short lip overlaps the large lip. Screw the new panel in place as described.