I would just like to say

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Just remembered,
Our chum up the road whose house was built by the same peeps etc. He wanted a log burner in the same relative position as ours. That section of roof is also over a single storey part of the house the rest being two storey, like our central bit.
The builders told him they couldn't put it there as the "chimney would not be high enough" so he had to have his in the two storey section so at the other, narrower part of his lounge in a rather useless place! (His house is a bit arty-f@rty, 120 deg angle in the middle etc). So maybe the builders got it right with him and didn't give a poop about us.
Though the tiles have mostly lasted until now and that is 16 years.
We could bring an action against them for "vice caché" but French courts are not like the UK fast track and you DON'T get costs. So not worth it.
 
Stanleysteamer said:
Pics as promised.



View attachment 317393


View attachment 317395

As you can see there is a definite pattern to the delamination, to the bottom edge of the tile and to the eastern side. The chimney and the prevailing wind (coming) from the west.

However the south side.....

View attachment 317396

Shows much, much less damage.
Also less moss. Though I cannot be sure the moss is causing the problem, or contributing to it.

Would you mind telling me what sort of sealant stuff to get?

And yes I did notice yet another broken tile on the North side. :rolleyes: ;)

This is all very sudden, I check every year and it has never been like this before. I am wondering if it has happened this April as it rained tons and we lit a fire many evenings.

Very grateful for you advice.
Click to expand...
Looks like it could be frost damage. Especially if a tile gets cracked when hit by those big hailstones, then damp gets in and the freezing exacerbates the damage.
 
Wimblowdriver said:
Looks like it could be frost damage. Especially if a tile gets cracked when hit by those big hailstones, then damp gets in and the freezing exacerbates the damage.
Click to expand...
This was my first thought, except that we have another two north facing bit of roof, one single storey, one two storey, subject to the same weather, and the tiles there are fine.
Also we've had that frosty weather, even with snow, and in fact much colder, over the time the house has been up.
This is massively sudden, so I have no idea, although @Stone56 's idea would explain why it is so localised, it is only over the half of the roof nearest to the chimney, the rest of it is OK.
 
Wimblowdriver said:
Looks like it could be frost damage. Especially if a tile gets cracked when hit by those big hailstones, then damp gets in and the freezing exacerbates the damage.
Click to expand...
Yes, it's looking a bit like frost damage to me too. Is this a side of the roof that's more apt to get cold in the winter? Attracting dew that then freezes, that sort of thing? Repeated thawing and freezing does a lot of damage to architectural baked goods. Whilst soot and other combustion debris might play a part, tiles and bricks served humanity well through the ages when everybody used solid fuel for heating and cooking, and they didn't need a new roof every 15 years. The modern hard-baked ones seem to spall more readily than the old ones that have a softer texture. I think it's just a poor batch.
 
Brown said:
Yes, it's looking a bit like frost damage to me too. Is this a side of the roof that's more apt to get cold in the winter? Attracting dew that then freezes, that sort of thing? Repeated thawing and freezing does a lot of damage to architectural baked goods. Whilst soot and other combustion debris might play a part, tiles and bricks served humanity well through the ages when everybody used solid fuel for heating and cooking, and they didn't need a new roof every 15 years. The modern hard-baked ones seem to spall more readily than the old ones that have a softer texture. I think it's just a poor batch.
Click to expand...
The answer to your question is in at least one of posts further upthread.
But I agree with our neighbour and others on 'ere (including you) that it is likely to be a combination of a poor batch and a chimney that is too low, used more than normal and in lots more rain than normal.
 
Wimblowdriver said:
So you've gone for the "just driven past a muck spreader" look. Cool :cool:
Click to expand...

Haha yer I luv the splattered look 🤣 🤣 it had all different coloured panels so I thought id give it a go.

Every panel is different..............
20240519_121258.jpg
 
Stanleysteamer said:
Pics as promised.



View attachment 317393


View attachment 317395

As you can see there is a definite pattern to the delamination, to the bottom edge of the tile and to the eastern side. The chimney and the prevailing wind (coming) from the west.

However the south side.....

View attachment 317396

Shows much, much less damage.
Also less moss. Though I cannot be sure the moss is causing the problem, or contributing to it.

Would you mind telling me what sort of sealant stuff to get?

And yes I did notice yet another broken tile on the North side. :rolleyes: ;)

This is all very sudden, I check every year and it has never been like this before. I am wondering if it has happened this April as it rained tons and we lit a fire many evenings.

Very grateful for you advice.
Click to expand...
The sealer is standard water proffer it's a silicone emulsions spirit or water base don't change the colour looking at the pictures it looks like frost damage as thay are clay tiles very often at the center you can see a defective part normally a white part or a small stone if you have moss on it that will do a lot of damage I would spray moss kill on it when dead jet wash let it get nice and dry then spray the emulsion on till run off point is reached it will solve that problem . Thompson water seal was one but there are lots of makes now
 
Stone56 said:
The sealer is standard water proffer it's a silicone emulsions spirit or water base don't change the colour looking at the pictures it looks like frost damage as thay are clay tiles very often at the center you can see a defective part normally a white part or a small stone if you have moss on it that will do a lot of damage I would spray moss kill on it when dead jet wash let it get nice and dry then spray the emulsion on till run off point is reached it will solve that problem . Thompson water seal was one but there are lots of makes now
Click to expand...
Thanks for this.
A bit funny, that if it is frost damage all of the northern side hasn't suffered. But at the end of the day your advice re moss and sealant/water proofer I will follow.
Just got to find some!
kevstar said:
I also have 2 sliders one with 2 pins with towball & one with a single pin on the nato hitch.
Click to expand...
Yours has one hole longer than mine, if you get what I mean, 6 as opposed to 5.
 
Stanleysteamer said:
Thanks for this.
A bit funny, that if it is frost damage all of the northern side hasn't suffered. But at the end of the day your advice re moss and sealant/water proofer I will follow.
Just got to find some!

Yours has one hole longer than mine, if you get what I mean, 6 as opposed to 5.
Click to expand...
It's all to do with freeze and thaw that's what does the damage
 
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