Tiling and Flashing Behind Chimney

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Hi, just wondering what you guys think of this recently done area at the back of the chimney. The red tiles are an existing roof, the grey ones are a new roof just done next door. Doesn't seem to be any tiles behind the chimney, just flashing to fill the void. Also seems to have placed a tiny piece of tile underneath to level them. Thanks.

 

[jj4091]

Can't tell much from those pics.. Need one from the back

 

[2020c]

Hi, just wondering what you guys think of this recently done area at the back of the chimney. The red tiles are an existing roof, the grey ones are a new roof just done next door. Doesn't seem to be any tiles behind the chimney, just flashing to fill the void. Also seems to have placed a tiny piece of tile underneath to level them. Thanks.

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Is it leaking? If ots juat the middle tile, i cant see any rain entering the building..

 

[pbar]

Can't tell much from those pics.. Need one from the back

Thank you for your reply, it has appeased me a little actually as I was expecting 'it shouldn't be done like that!' replies. I only have pics from this angle at the moment, but I'm glad that, I assume, nothing stands out as being incorrect.

 

[pbar]

Is it leaking? If ots juat the middle tile, i cant see any rain entering the building..

Thanks for replying. It doesn't leak I was just concerned that, with it being a new roof it might not be common practice to do it this way. On similar houses nearby there is a row of tiles at the back of the chimney and the flashing goes underneath. Whereas here the tile (perhaps a tile and a half) are missing with the flashing on top covering the void. I assume it's normal to do it either way?

 

[2020c]

Thanks for replying. It doesn't leak I was just concerned that, with it being a new roof it might not be common practice to do it this way. On similar houses nearby there is a row of tiles at the back of the chimney and the flashing goes underneath. Whereas here the tile (perhaps a tile and a half) are missing with the flashing on top covering the void. I assume it's normal to do it either way?

It depends on how much lead flashing is tucked up under the tiles and up to the ridge. Where it could leak is if theres not enough lead tucked up under and where the two different tiles meet. I can see the black tile slightly higher than the red tile, not inter locked correctly. This can happen with different brand of tiles or even same brand but older versions and new. I have worked on jobs where builders have slightly grinded underneath where the grooves are and connected here with a strong silicone like ct1 or tech7 and the tiles never will be pulled apart. Not perfect but defo wont leak if done properly.

The lead work looks ok. Id be confident this wont leak on you.

 

[pbar]

It depends on how much lead flashing is tucked up under the tiles and up to the ridge. Where it could leak is if theres not enough lead tucked up under and where the two different tiles meet. I can see the black tile slightly higher than the red tile, not inter locked correctly. This can happen with different brand of tiles or even same brand but older versions and new. I have worked on jobs where builders have slightly grinded underneath where the grooves are and connected here with a strong silicone like ct1 or tech7 and the tiles never will be pulled apart. Not perfect but defo wont leak if done properly.

The lead work looks ok. Id be confident this wont leak on you.

Thank you for your continued help and info, you're teaching me a lot, I'm grateful. There are several areas where the tiles aren't fitting perfectly, like you mention, mainly where new meets old but even on some areas of all new tiles, wonky roof/timbers I assume. You're so right about different or old not mating exactly, as I've been stressed about this I had a play on the lawn with some spares I had, with Sandtoft (which is what mine are), Marley (same colour as mine which I got from a neighbours re-roof) and the new roof ones and it seems to be pot luck as to what fits and doesn't.

Did you happen to notice the little piece of tile placed underneath to prop up and level the tiles. I've been wondering if this is a common trick of the trade.

 

[ree]

OP,
The back gutter installation is wrong - so is the stepped-cover flashing - so is the setting out of the battens plus sand & cement has been used to incorrectly re-point. 3:1 sand & lime is the correct mix for pointing.
Using a chip of tile to wedge up a tile will faill - the chip will fall out.
The back gutter lead flat should be a min of 150mm or better 200mm.
Back gutters depend on a little supporting joinery, & correct use of the roofing membrane.

As mentioned, more pics would be needed ie. four sides of the stack & the flaunching, to give a more accurate opinion.
There are one or two other remedial items that might need attention.
However, presuming you have been in the loft, & you dont have any leaks then maybe leave well alone