Tile roofs are very expensive to replace. Roof tiles are easily damaged by extreme weather, tree branches and rodents travelling on top of the roof. As individual tiles become damaged, it is more economical to replace each tile rather than the entire roof. Replacing the tiles can also help to prevent water from seeping in through the damaged tile, and add or keep value in your home. You can save money by performing the repairs yourself.
Remove the grout around the roof tile that will be replaced with a chisel.
Insert the pry bar underneath the roof tile. Then pull the pry bar up to unseat the roof tile. Make sure not to unseat any tiles around the damaged one. If you are having trouble just unseating the one roof tile, break the tile into pieces with a chisel. Then remove the bits of tile.
Clean the hole left from the removed tile of any debris. Scrape away any leftover adhesive or mortar with a putty knife.
Wipe any adhesive off the putty knife with a towel.
Place the new roof tile in the hole. Make sure it fits neatly in place, and is sitting at the same level as the adjacent tiles.
Pull the new roof tile out of the hole and use a putty knife to apply 1/8-inch adhesive to the back of it. Leave a 1/2-inch perimeter around the back of the tile free of adhesive.
Turn the roof tile over and press the adhesive side down into the empty spot. Ensure that the tile is seated underneath the tile above it. Press your hand on the face of the tile to ensure that the adhesive spreads around the entire back of the tile. Allow the adhesive to dry for 24 hours before applying the grout.
Mix the grout according to the directions and insert the grout into the gaps and cracks surrounding the new roof tile. You can take a sample of the grout already on the roof to a supply store to find a grout of the same colour.