How To Lay A Concrete Roof

If the roof s edges are longer than the flashing available for purchase you can connect separate pieces together.

How to lay a concrete roof.

When you reach the end of the roof cut the underlayment roll to match the edge. Place drip edge flashing on the roof. Roll out 10 foot 3 m long sections at a time and then secure it with nails separated by intervals of 24 inches. Otherwise attach the tiles to the roof felt.

Knowing the roof s size can help you get the correct flashing length. The first section of the tiles is cut to size and attached to the roof starting at a lower edge and working up. 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. Make sure the tile lugs are seated snuggly onto the top edges of the battens.

As the width of the concrete slab is 16 3 4 inches place the steel joists at this distance. The steel joists will provide a strong foundation for the flat concrete roofing. Firstly get two of your roof tiles and either two full battens or two offcuts of batten and place them onto the roof one above the other. Attach the roof tiles if there are roof battens nail the tiles to them.

Secure the end with nails. Use the flashing to cover the outside edges of your roof. 1 position a roll of 60 or 90 pound underlay at one side of the roof perpendicular to the lower edge of the roof. The bottom of the joists should rest on either a beam or a wall.

Use roof adhesive to fix down the tiles as each one is slid into place and nail the tiles down. Check the labeling before choosing the flashing. This will give it the support it requires. A solid slab of concrete capping the top of your house.

Exact specifications vary but most concrete roofs are several inches thick. Keep all nails at least 2 inches from the edge of the roof. Step 5 placing the concrete slabs. The open end should face sideways.

For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Next place the concrete slab on its face. 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. Next place your two tiles one on top of the other loose onto the battens without anything being fixed.