"The beauty of concrete roofing is that it is a permanent roof structure that will last longer than the building. However, there are things that can cause the need for repair or replacement of tiles. Here in North America, people like to put Christmas lights on their roofs and end up walking on the roof. It's inadvisable to walk on any roof (whether it be a composite shingle, a metal roof, or tile roof), but if you do damage the tile it is very easy to repair. If you have a broken tile, it's simply a question of elevating the tiles above the point of repair, pulling out the broken one, putting in a new one, and lowering the tiles above back into place," says Dolan.
There are several different ways concrete tiles are attached to a roof, so your first step will be to contact the manufacturer of your roofing tiles for instructions on proper replacement. You will also need a supply of tiles that match the existing ones on your roof. If you decide to do the repair project yourself, you will need a secure ladder, non-slip shoes, and the appropriate tools and safety gear. If the project requires that you walk on the roof, it is important to step carefully and evenly distribute your weight.
If your concrete tiles are attached by hanger strips and nails, you will need the following supplies: hammer, pliers, pry bar, wedges, roof cement, putty knife, replacement tiles, copper nails, hanger strips, and possibly a wet saw. Safety equipment should include a secure ladder, non-slip shoes, eye goggles, and heavy-duty gloves. If you are replacing a cracked tile, our first step will be to break up the tile with a hammer while wearing goggles and gloves. Tapping gently on the tile will use cause it to break apart and allow for its removal, while avoiding breaking nearby tiles. The next step will be to clear the area of any broken pieces and fragments. You may want to sweep the area clean. Then you will use the wedge to prop up the layer of tiles above the missing tile by using the pry bar to lift the row and the wedges to hold it in place. At this point you may need to clean the area again. Using your pliers you should remove any old nails left behind from the old tile. Then check the underlying felt for any tears or opening and repair with roof cement. Now you are ready to attach the hanger strip to the tile. You may need to use a wet saw to cut the tile if it is longer than the existing tiles. Once you've done this, you can remove any wedges and slide the new tile into place making sure the hanger strip clicks into place.
