How To Slope An Existing Flat Roof

Add slope to the flat roof.

How to slope an existing flat roof. This solution is perfect for homeowners looking for the easy option for adding slope to a flat roof property. Scrape the surface of the roof with a flat shovel ice pick or similar tool. You will need to ensure that you are in standards with your local building codes and have the permits required. Flat roofing systems come with benefits and drawbacks.

Use your hands to peel materials off the the surface of the roof. Once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing. Just rib out the osb rip some lengths of spruce 2x4 or 2x6 to give you the slope you want. Unlike sloped roofs flat roofs are susceptible to ponding water.

The 8 step process for diy installation. The slope conversion process is accomplished by installing a light gauge steel sub framing system. Eventually water penetrates the building. Roofs with a slope of 1 to 3 inches of fall to 12 inches of run should use rolled roofing.

Remove all of the old roofing materials including any plywood covering under the roofing materials. Anchor the wall to the existing roof deck. Build a stud frame wall at the high end of the proposed roof structure. Water that stays on a flat roof after it rains will weaken the material over time.

That would be. Just make these tapered cuts so that the minimum thickness is approximately 1. Slopes above 3 inches fall to 12 inches run can use shingles. Most people view pitching a flat roof as a tedious job.

One important and perhaps not so obvious fact is that a flat roof is not actually flat. This system is designed to collect the required design loads and transfer them to the existing structure. The flat roof already has a slight pitch as it is required by law. Nail and construction adhesive glue them to the tops of the existing joists and then put new a new subfloor and a rolled asphalt roof on top.

The wood frame of the roof needs to be completely exposed and clean.