How To Do Slope Over Flat Roof With Plywood

Once the cement is spread across the roof it s time to place the second layer down.

How to do slope over flat roof with plywood.

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. And their horizontal lines abound in the west and in urban areas. Technically we are talking about low slope roofs that have a slope less than or equal to 3 12. Get your trowel and another scoop of cement and apply it on the roof below the second chalk line.

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. For example fill a 1 inch slope across 8 feet by. Once the area is known divide by the area of a 4 8 sheet to find how much sheathing is needed. But flat roofs take a pounding from harsh weather which is why they rarely last as long as a good sloped roof.

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. Find the area of a roof. As mentioned above place the first 6 inches 15 cm of the second layer on top of the first layer. You can read our article about calculating slope for information on the various roof slope notations.

Traditional homes often have sections of flat roof over shed dormers above porches and garages and on balconies. This is the basis for calculating the angle which is approximately a 1 19 degree slope. Apply roofing cement and secure the second layer to the roof. To find the amount of plywood needed to cover a roof start by finding the area of the roof.

I ll be reviewing the bison products pedestal and deck tile system on this episode of the build show.