How to install corrugated roofing
How to install corrugated roofing on a shed
Corrugated roofing is a great way to top a garden shed or patio. It's low cost and relatively straightforward to install. Once it’s in place you will have a durable shed roof which will withstand all weathers.
This guide concentrates on installing corrugated bitumen sheeting onto the apex roof of a new build project. To replace existing roofing, survey your roof structure and decide whether it will need strengthening or maintenance before you replace the roofing sheets. Make a note of the roof construction. To install the sheeting you will require:
- A purlin on rafters (a purlin is a horizontal bar or beam which directly supports the roof structure. Most roofs are supported by purlins)
- A decked roof, e.g. roofing grade OSB or plywood supported on a traditional trussed roof structure
Take care to fix the bitumen corrugated sheets the correct way up. The top of the sheet has a smooth grain surface, and the underside of the sheet has a dimpled rough surface. The sheets also finish with the corrugation edge facing down to the surface of the roof.