Slates on Roof Question

Barking_Mad · 14 Nov 2019

Hi,

A couple of months ago we had some slates replaced (a single row of them numbering approx 15 slates) on the edge of the roof up against the barge-board. We then had some windy weather and these slates have moved considerably leaving the repaired slates largely intact but misaligned and with gaps between them (although there were some before the wind). The original slates were undamaged and perfectly intact, except where a couple up against the new slates broke off.

We asked the roofer to come back and have a look and he said he wasn't responsible, that the wind was, and he provided another quote to fix them. In his quote he mentions repairing and removing the slates and using "lead flashing" and "galvanised fixings" for the replacements. Could anyone tell me:

a) What are 'galvanised fixings' and how are they used?
b) Where should the 'lead flashing' be situated?
c) If applicable, can we tell by looking at the (now damaged slates) if they were originally installed by said roofer with "galvanised fixings? and if "lead flashing" was used?
d) How should slates on the edge of a roof be fixed down given that they are presumably more exposed to the wind?

Thanks for any help in advance

datarebal · 14 Nov 2019

post a picture so we can get a better idea of whats been done...

Leofric · 14 Nov 2019

Galavanised means zinc plating to rustproof, verge slates can be clipped, lead flashing to bargeboard sounds odd

catlad · 16 Nov 2019

The wind did it! well fancy that on the edge of a roof!
Don't get the same moron back.

Barking_Mad · 17 Nov 2019

datarebal said:
post a picture so we can get a better idea of whats been done...

Hi,

Thanks for the responses, sorry for the slow reply. It's quite a complicated issue and Im loathed to put all the details up. The bargeboards were due to be replaced, but when it came to removing them he found that the slates were nailed to it, so he couldnt just remove them (or so he says) so a result they were smashed off, hence the replacement with new slates that have subsequently been damaged. Yes, I know the slates are a different colour and make and that the ridge tile is just pathetically repaired.

Here's an image of the roof (after 'the wind') here.
Another image of the roof (and the original ridge tiles) here.
Here's a view of tiles he fitted (different section of roof) which are not "wind damaged".

I'd particularly like to know about what should be done to fix tiles on the edge of a roof and in general because to me these just were not fixed/fitted properly in the first place, wind or no wind. Thoughts and opinions welcome.

catlad · 17 Nov 2019

Unfortunately I can't see your images, it says something about unsecure site. If he didn't know the slates would be nailed to the barge board then I'm not sure which school of roofing he went to!

Barking_Mad · 17 Nov 2019

catlad said:
Unfortunately I can't see your images, it says something about unsecure site. If he didn't know the slates would be nailed to the barge board then I'm not sure which school of roofing he went to!

Oh, sorry about that, not sure why it's giving that message. Try below!

Slates after 'wind damage'

Larger view of rest of roof with 'ridge tile'

Slates on different elevation unaffected by 'wind damage' but with gaps between them.

catlad · 17 Nov 2019

The work is poor and badly thought out.
Have the barge boards been been replaced?

Barking_Mad · 17 Nov 2019

catlad said:
The work is poor and badly thought out.
Have the barge boards been been replaced?

Yes, badly painted, possibly sprayed.

catlad · 17 Nov 2019

Was all this done by the same person?

Barking_Mad · 17 Nov 2019

catlad said:
Was all this done by the same person?

Yes, same roofing company.

catlad · 17 Nov 2019

Obviously not one with much pride then.
You didn't find them with an 0800 number did you?

Barking_Mad · 17 Nov 2019

catlad said:
Obviously not one with much pride then.
You didn't find them with an 0800 number did you?

Hah! No, they actually did some work on the house about 10 years ago and did a good job. Hence getting them back.

The mortar round the ridge tiles and over the slates is just... *sigh*

datarebal · 17 Nov 2019

rubbish job. looks like the barge has dropped..possibly, wrong ridge tile used and pointed with his feet ..cant see any new flashings, but then it wouldn't need any in this instance.

to be really picky, galvanised nails are not recommended with slate, copper ideally

Barking_Mad · 17 Nov 2019

datarebal said:
rubbish job. looks like the barge has dropped..possibly, wrong ridge tile used and pointed with his feet ..cant see any new flashings, but then it wouldn't need any in this instance.

to be really picky, galvanised nails are not recommended with slate, copper ideally

Sorry, can you explain where and how 'galvanised fixings' (or copper) should be used on the slates? Should this be on all the slates, or just the ones on the edge next to the barge board?

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Slates on Roof Question

Leofric

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