At the rear of the property some of the cement from the tiles is missing, maybe this is the reason why I have a leak. If the subfloor was properly prepped, (sealed properly) and the correct adhesive was used for the tiles, you won't have "casual" water damage. These tiles are stuck fast. Going up to the loft we noticed there is a considerable gap (5-6 cm) between the roof and the wall, like this: Is it supposed to be like that? Cement or sealant to fill gaps between leaky roof tiles? It works by sealing up holes and cracks which might be forming on your roof, air vents, and air conditioning units. Tips . Is there supposed to be a gap between the wall and the roof? You can't avoid that. I am in the process of resealing the gap between the base of the shower tray and the tiles immediately above. Construction workers often leave huge gaps at roof lines (peaks & valleys), edges, and wherever soffits touch the roof. Do you fill the gap with just sealant and smooth off, or can you fill the main gap initially with grout and then seal with sealant.Any other ideas appreciated. I hope so, cause if the gaps were between tiles, then you woul have quite a wet house if it rained. 3. A roof sealant is kind of like a mix between varnish and paint. This special ridge board has to be positioned carefully so that there will be a gap between it and the ridge tiles when they are fixed. Clear protective roof sealer to provide lasting protection to all types of roof tiles. I have removed the moss and the gap between each tile is approximately 1 inch. I personally use chicken wire and heat shield but thats probably a bit of overkill. Old tiles that have had decades of weathering will keep rainwater out of the house regardless of whether they have a waterproof seal on the surface or not. Viewed 26k times 18. End sealing pieces which fit between the ends of adjacent ridge tiles to provide a seal. The part of the car port ceiling where it drips - is below clay tiled roof of the house, so water must somehow penetrate beneath the tiles. I have scaffolded that part of the house and traced the leak to a couple of ridge tiles. Ask Question Asked 4 years ago. Clay tiles, natural stone tiles and cement tiles are all examples. During recent storms we had a leak in a bedroom. About an inch in a bucket all told. This will help to slow down the re-growth of moss, algae and lichen on roof tiles which tend to thrive in a damp, porous, environment. Gaps are needed to allow the system to function; sealing up, and locking together, roofing elements will result in cracking and breakage of the slates or tiles. As far as the "line" appearing between tiles, that's just how vinyl tiles look. How To Seal Roof Tiles. It's actually dirt stuck to the adhesive edge of the tile. Small gaps between slates reduce the effects of capillarity, and help to prevent water reaching the nail holes. I should have mentioned its a gap between the tiles and gutter. (Had some spare, so thought might as well) Because tiles are laid on a pitched roof (a sloped roof) water runs off the tile and onto the next tile below. Many different types of roofing material come in tile formats. A special ridge board above the apex of the trusses which takes the fixings through the ridge tiles. They have a strong adherence to your particular surface … But yeah, chicken wire is good, or anything similar. Now, a lot of standing water, yes. Or suppose the workers cut holes in the roof for ventilation, but didn't screen them, as is often the case. Our roof sealer will protect porous clay, slate and concrete roof tiles by making them water resistant. Our house is 100 years old and has a pitched tiled roof. However, the tiles have been cut quite short leaving a substantial gap to fill. The water continues like this until it enters the gutter. I live in a two bed bungalow. 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