How To Put A Flat Roof On A Shed

It s similar to a shed or lean to roof or a clerestory roof but has one visible difference.

How to put a flat roof on a shed.

The structure does not need to be reinforced and the surface area is not that much greater for a shallow sloped shed roof. Measure the vertical distance rise from the 12 inch mark on the level run to the underside of the same rafter. The underlayment will not need to be bonded to the roof as this will allow for movement without causing damage to the asphalt. In this video i show you the basics of roofing.

Roofs with a slope of 1 to 3 inches of fall to 12 inches of run should use rolled roofing. I didn t want ridges or valleys which are a lot of work and can leak. Determine the slope of the roof. One important and perhaps not so obvious fact is that a flat roof is not actually flat.

If you want a diy flat roof here are the steps to follow. Put down your first sheet of plywood at the corner of one end of the roof. The insulation thickness of 8 inches is laid as a flat carpet. A flat roof is easily replaced by a one way slope or shed roof.

Joints are sealed with vapor barrier. Make sure it s lying horizontally across the exposed rafters and that the edges are flush with the edges of the end rafters. Lay down roofing paper or tar if you have removed the shingles from the old roof. It has a greater slope.

Cover your rafter trusses with plywood sheathing. Figure out the slope of the roof by setting a carpenter s level on the underside of one rafter in the attic. This material must be laid across the rafters and overlap. Stack insulation boards on the film top.

I do this on my shed but these basic principals can be applied to your house as well. Drive a nail into each corner of the plywood to hold it in place temporarily. Start at one end of the storage shed roof and lay the underlayment material onto the flat roof surface making sure that there are about 2 inches extra on either end to hang over the edges of the shed s flat roof. I decided to take full advantage of the regulations and build a 10 x 14 shed.

Use measuring tools to find the length and width of the roof from the ground outside. I decided on a slanted roof. Attach a board uncut to the settle rafters on which you need to lay a vapor barrier material film construction. Slope is calculated as rise over run.

Shed build time lapse.