How To Do Slope Over Flat Roof With Plywood

A sloped roof is more capable of removing water from the building s exterior and can be an attractive alternative to the flat roof.

How to do slope over flat roof with plywood. The minimum slope for a flat roof is 1 4 per foot or 1 4 12 but some owners or insurance companies require a minimum slope of 1 2 per foot. You can read our article about calculating slope for information on the various roof slope notations. Once the cement is spread across the roof it s time to place the second layer down. Apply roofing cement and secure the second layer to the roof.

I ll be reviewing the bison products pedestal and deck tile system on this episode of the build show. For example fill a 1 inch slope across 8 feet by. Place strips of plywood across the floor to fill deeper slopes increasing the thickness of the plywood at regular intervals to correct the slope. And their horizontal lines abound in the west and in urban areas.

Get your trowel and another scoop of cement and apply it on the roof below the second chalk line. Multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof in square feet. Traditional homes often have sections of flat roof over shed dormers above porches and garages and on balconies. According to the international building code the typical built up flat roof that uses tar or asphalt goes by the guideline that for every foot 12 inches of a flat roof a minimum of inch must step up or down.

But flat roofs take a pounding from harsh weather which is why they rarely last as long as a good sloped roof. Find the area of a roof. To find the amount of plywood needed to cover a roof start by finding the area of the roof. Technically we are talking about low slope roofs that have a slope less than or equal to 3 12.

The slope on a flat roof is too small to shed water and the shallow slope tends to collect leaves and debris that act like dams.