How To Make A Flat Roof Slope

Stack insulation boards on the film top.

How to make a flat roof slope.

Most people view pitching a flat roof as a tedious job. The 8 step process for diy installation step 1. 1 you will taper the roof rafter. Despite the name all flat roofs need to be slightly angled in some direction.

Attach a board uncut to the settle rafters on which you need to lay a vapor barrier material film construction. Joints are sealed with vapor barrier. Wood frame typically you will do one of two installations. The downsides of flat roof to pitched roof conversions and three great alternatives why would you add pitch to your flat roof.

You pick a direction and slope that way. This solution is perfect for homeowners looking for the easy option for adding slope to a flat roof property. This is necessary for allowing water to run off of the epdm membrane surface and towards an appropriate drainage system but this slope doesn t need to be extremely steep and when covering a large property the angle of the flat roof can be near invisible to the naked eye. The degree of slope required will vary based on your roof characteristics as seen in chart 9 26 3 1 of the national building code.

To create a slope on your flat root or roof deck you first need to measure and determine the span and pitch of your roof so that you can make a detailed plan. You will need to ensure that you are in standards with your local building codes and have the permits required. Adding trusses to a flat roof alone is time consuming not to mention costly. Frame the roof one important and perhaps not so obvious fact is that a flat roof is not actually flat.

Add the plywood once you ve added the framing it s time to add a layer of 5 8 inch plywood sheathing. This material must be laid across the rafters and overlap. The insulation thickness of 8 inches is laid as a flat carpet. This means you will over.

Using modern cement screed mixes a professional flat roofer can fill dips and hollows quickly and level them or slope them rather to fill the low point and re create the surface of your roof. The flat roof already has a slight pitch as it is required by law.