Dry Ridge Tiles up to a wall...

[simonaustin1969]

Hello everyone!

I am looking for some advice for my garage roof. I live in a new build property, as built by Bellway in 1999. It has been a superb house with no problems. However I need to repair / repoint the garage roof. I have a garage built into the side of my property, so it sits against the wall of the house as a part of it. The garage has a pointed sloping roof like a standard house. It has concrete tiles with a ridge system. The ridge cement, is cracked and coming apart, so I am going to remove and refit the lot with a good quality dry ridge kit. I know how to do the work, its straight forward enough, but the question I have is this.

What do I do at the house end of the ridge? At the moment the last tile is against the house wall with the usual cement join and bed. The side wall goes up above this as its the second floor. So are there any special fittings for a dry ridge that would secure or waterproof the tile against this wall? I can remove the tiles, fit the covering water proof roll/membrane and wood beam etc, and cap off the far end. This is where its the gable wall of the garage, but what happens at the house side? Do I just use a cement mix filler here and bed the tile into that like its currently done then run the ridge and dry ridge kit from this point? I cant seem to find any answers to this. The house roof itself and its ridge is fine, its in perfect condition. If I needed any work done up there I would get a roofer to do it. But the garage is an easy job I can do to save costs. I am going to clean the roof tiles with a roof clean solution to kill moss etc when I am done, just to tidy it all up as its grubby.

Any advice and helpful ideas or links for a good quality kit would be most welcome. Thanks!

 

[RandomGrinch]

Can you post a picture?
I could be completely wrong, but I suspect you may already have what you need up there.
If there is flashing going up at the junction between wall and roof; at the top, there may be a roofing saddle - something like this...

The dry ridge roll would then attach to this and off you go.

 

[simonaustin1969]

Ahhh I see. I will try to get pictures and put them up tomorrow. But that diagram looks similar to what I have. There is lead flashing like that running up the sides of the wall where it meats the roof. I dont know about the peak though where the roofing saddle is. It may be under the cement itself as there is some there at that last tile where it meets the wall....If the cement was dug out, tile removed and then put back as a dry verge is there nothing that would sit between that last tile and the wall? I will grab some pictures as soon as I can, I have a landing window near the top of the peak and will take some from there....

 

[simonaustin1969]

Here is a picture of the garage roof and wall in question...

I can see now it has the flashing coming out of the wall. So does that built in lead flashing go under the ridge tile membrane? Or over the top of it? I would have thought if I stick the membrane over the top of all the lead pieces, that any water getting under it would hit the lead and then run off down it. But that still leaves the question of where the thin bead of cement is at the end of the tile, before it hits the flashing. Would I just put a single plastic ridge tile joint here to hold the end of the tile? Then I could use silicone or roof mastic to stick the other side of it to the flashing . This is the only joint I am worried about as I have seen no ridge kits that have anything to deal with areas like this. It seems to be only for roofs with free standing open ends. That state of that cement in the picture...I have repointed it twice over the years and it last about a season then starts to fall apart. So I want to get this fixed this summer before I get too old to be climbing about on roofs....

 

[noseall]

Here is a picture of the garage roof and wall in question...

View attachment 345541

I can see now it has the flashing coming out of the wall. So does that built in lead flashing go under the ridge tile membrane? Or over the top of it? I would have thought if I stick the membrane over the top of all the lead pieces, that any water getting under it would hit the lead and then run off down it. But that still leaves the question of where the thin bead of cement is at the end of the tile, before it hits the flashing. Would I just put a single plastic ridge tile joint here to hold the end of the tile? Then I could use silicone or roof mastic to stick the other side of it to the flashing . This is the only joint I am worried about as I have seen no ridge kits that have anything to deal with areas like this. It seems to be only for roofs with free standing open ends. That state of that cement in the picture...I have repointed it twice over the years and it last about a season then starts to fall apart. So I want to get this fixed this summer before I get too old to be climbing about on roofs....

Just do a mortar bed joint on the abutting tile.

 

[simonaustin1969]

Yes I had a feeling it would be a case of mortaring the last one back in...oh well...that has not cracked etc over 25 years so I suppose I will just redo it like that....