How To Lay A Concrete Roof

The open end should face sideways.

How to lay a concrete roof. The bottom of the joists should rest on either a beam or a wall. 1 position a roll of 60 or 90 pound underlay at one side of the roof perpendicular to the lower edge of the roof. Check the labeling before choosing the flashing. Knowing the roof s size can help you get the correct flashing length.

As the width of the concrete slab is 16 3 4 inches place the steel joists at this distance. If the roof s edges are longer than the flashing available for purchase you can connect separate pieces together. For a concrete roof we would usually clean and scrape the surface of the roof until all old moss and dirt is gone sweep it spotless then apply two coats of bitumen primer which will soak into the substrate and give you a good surface to start on. A concrete roof is exactly what it sounds like.

For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. A solid slab of concrete capping the top of your house. Let this dry completly. Next place the concrete slab on its face.

Next place your two tiles one on top of the other loose onto the battens without anything being fixed. Secure the end with nails. Otherwise attach the tiles to the roof felt. Exact specifications vary but most concrete roofs are several inches thick.

Roll out 10 foot 3 m long sections at a time and then secure it with nails separated by intervals of 24 inches. Place drip edge flashing on the roof. The steel joists will provide a strong foundation for the flat concrete roofing. Attach the roof tiles if there are roof battens nail the tiles to them.

The first section of the tiles is cut to size and attached to the roof starting at a lower edge and working up. Installing a cement tile underlay is easier with the help of an assistant. Make sure the tile lugs are seated snuggly onto the top edges of the battens. Use the flashing to cover the outside edges of your roof.

How to tile a roof if you would prefer to read how to tile a roof and see more help please visit this link unless you found this video via my website. When you reach the end of the roof cut the underlayment roll to match the edge. Keep all nails at least 2 inches from the edge of the roof. Use roof adhesive to fix down the tiles as each one is slid into place and nail the tiles down.