Repointing roof tiles

Hi All,

We had a survey done on the house we are currently in the process of buying. One of the issues that was flagged was the tiles on the gable end of the property need repointing, there is a risk they could blow off in high wind. We're not actually in the property yet so the description is kind of greek to me.

Does anyone have a better description of what this actually entails? Would I need to get someone in or could I manage the job myself? There is no conservation required as it's a normal 1970's end of terrace.

I searched the forums but repointing only comes up twice.

Any info greatly appreciated.

Yeah I can help you there, with a fuller explanation that is! The pointing you refer to is called "verge pointing". Roof tiles rely on the interlock with other tiles (and nailing every third course or more) to remain on the roof. Because the last tile at the edge of the roof (verge) is only secured on one side this tile is vulnerable, especially in high winds where "wind lift" or suction is a problem- once one tile is lifted a roof can be rapidly stripped by high winds. But there is no need to panic this is rare. As for repointing the verge this is not really a DIY job because of the heights involved and the risk of falling materials etc. To do this job you really need a full scaffold or at the very least a mobile tower with proper access ladders and guarding etc. Another option is to hire a powered scissors lift. You have to rake out the old pointing, removing as much loose material as possible. Brush out the dust and damp down with a wet brush. Then make up a 1:3 cement/ sand mix, coloured with dye to match the tile colour. A good idea would be to prime the verge with some PVA to ensure a good bond. Work the mortar well into the join, pressing in firmly and finish off with a steel pointing trowel. Its best not to do this job in very warm or very wet weather, as either will impair the bond and affect the job. If the mortar is drying out too quick spray a light mist of water on the surface. That's all there is to it really.

Thanks Carpenter that makes it a lot clearer. I think I'll get someone in to do it. As I'm an FTB my DIY skills have yet to be honed to something as advanced as this, as they say, one step at a time.

Would any builder be able to do this or are there specialist firms?