Log burner installed, questionable flashing
Log burner installed, questionable flashing
Author
Discussion

bunnysquasher

Original Poster:

50 posts

217 months

Tuesday 1st November 2016
quotequote all
Hi, I had a log burner installed yesterday and would like any advivse or opinions about wether the flashing between the flue and the roof has been done correctly.

To My untrained eye it looks wrong. What do you think, am I being picky or would you demand it was done differently.

PS do I win anything for my lurking record?



Rubin215

4,201 posts

186 months

Tuesday 1st November 2016
quotequote all
Shocking job.

I take it your installer isn't HETAS?

bunnysquasher

Original Poster:

50 posts

217 months

Tuesday 1st November 2016
quotequote all
Rubin215 said:
Shocking job.

I take it your installer isn't HETAS?
They say they are and I have what looks like a HETAS certificate provided by them (it's not in front of me at the moment though)

TooMany2cvs

29,008 posts

156 months

Tuesday 1st November 2016
quotequote all
bunnysquasher said:
Hi, I had a log burner installed yesterday and would like any advivse or opinions about wether the flashing between the flue and the roof has been done correctly.

To My untrained eye it looks wrong. What do you think, am I being picky or would you demand it was done differently.

It's not exactly a thing of great beauty. But the only real question is whether it's watertight...

The bottom's irrelevant.
The sides look to be under the tiles to either side.
The top looks to be under the shortened tile above.
So that leaves the rivetted ring. Any sign of sealant between the top side of that and the flashing?
The drip collar will stop direct ingress.

Does look a bit home-baked compared to simply spending £50 on something like...
http://www.directflues.co.uk/index.php?page=shop.p...
...but a lot of the lack-of-prettiness seems to be the use of plenty of goop to seal it against the tiles. With enough overlap, that's not even needed.

Not sure this is a legal issue really. Probably better in Homes, Gardens & DIY.

bunnysquasher

Original Poster:

50 posts

217 months

Tuesday 1st November 2016
quotequote all
TooMany2cvs said:
It's not exactly a thing of great beauty. But the only real question is whether it's watertight...

The bottom's irrelevant.
The sides look to be under the tiles to either side.
The top looks to be under the shortened tile above.
So that leaves the rivetted ring. Any sign of sealant between the top side of that and the flashing?
The drip collar will stop direct ingress.

Does look a bit home-baked compared to simply spending £50 on something like...
http://www.directflues.co.uk/index.php?page=shop.p...
...but a lot of the lack-of-prettiness seems to be the use of plenty of goop to seal it against the tiles. With enough overlap, that's not even needed.

Not sure this is a legal issue really. Probably better in Homes, Gardens & DIY.
That "goop" is mortar. Mortar wont stay stuck to flashing will it? not enough to seal anyway.

Loyly

18,290 posts

189 months

Tuesday 1st November 2016
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That looks absolutely crap.

The Surveyor

7,624 posts

267 months

Tuesday 1st November 2016
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bunnysquasher said:
That "goop" is mortar. Mortar wont stay stuck to flashing will it? not enough to seal anyway.
What did they say they were going to do, what does the specification say? It sounds like you have already made up your mind that the flashing and mortar pointing isn't satisfactory so take it up with the company who fitted the flue. If you have already, what did they say?

Personally, my main concern wouldn't be the external flashing as most tiles allow some rain through under extreme weather, it would be the sealing / lapping of the flashing undercloak into the existing sarking felt below the tiles. Sometimes details that look beautifully neat can be totally ineffective, and conversely details that look really poor may be perfectly weather proof. If they have just ripped a hole through the sarking felt (its there for a reason!) then you need to consider getting them back.

anonymous-user

84 months

Tuesday 1st November 2016
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Terrible job, a lot have jumped on the wood burner bandwagon.
Couldn't he had worked them tiles above the flue to cover up the flashing a bit more also he could of dressed the other flashing over the remaining tiles and at least tried to use a thin line of dark coloured mastic rather than thick joints of plug.
Did he do it cheap?

bunnysquasher

Original Poster:

50 posts

217 months

Tuesday 1st November 2016
quotequote all
The Surveyor said:
What did they say they were going to do, what does the specification say? It sounds like you have already made up your mind that the flashing and mortar pointing isn't satisfactory so take it up with the company who fitted the flue. If you have already, what did they say?

Personally, my main concern wouldn't be the external flashing as most tiles allow some rain through under extreme weather, it would be the sealing / lapping of the flashing undercloak into the existing sarking felt below the tiles. Sometimes details that look beautifully neat can be totally ineffective, and conversely details that look really poor may be perfectly weather proof. If they have just ripped a hole through the sarking felt (its there for a reason!) then you need to consider getting them back.
Hi, thanks for all the replies.

They didn't say what they were going to do and there was no spec. Lesson learned here!

I was actually hoping that general opinion would be that its ugly but fine, in which case I could forget about it.

They have ripped a hole in the felt but tucked it above the flashing (above the flue)
To the sides of the flue, I can see the tiles and battens from the loft (there is no felt covering the join between the flashing and tiles)

They are coming back tomorrow to install a longer flue as I have pointed out to them that the height of the opening does not conform to part j of the regs. I have also asked them to do something with the tiles/flashing, but the guy I have been speaking to is defending his installers work (having not seen it).

It was one set of installers yesterday, Ive been speaking to the owner? on the phone and he is sending a different set of installers tomorrow.

Thanks for all the help so far.

marcusgrant

1,454 posts

122 months

Tuesday 1st November 2016
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Does the HETAS certificate and plate not get sent after the install is complete? Could easily be wrong but mine was

Fish

4,064 posts

312 months

Tuesday 1st November 2016
quotequote all
I'll be honest and say that actually looks fine. The only questionable aesthetics is the use of mortar rather than a sealant. The flashing is a bought one and at least uses lead! it is the correct angle, the flue is >50mm form combustibles, looks like the vermiculite has been taken all the way up and with the flashing being bought the square of lead will be fine for those size of tiles.

Looks like it should be fine form a waterproofing point of view.

Yes the flue will need to be higher...

I'm a bit unsure how it could be less ugly, these things never are pretty the lead will dull down you can't put tiles along the bottom and the cut tile above is fine?




The Surveyor

7,624 posts

267 months

Tuesday 1st November 2016
quotequote all
I hope they are neater tomorrow. It looks easily accessible within the roof void so just wait until it gets tested by some proper rain fall, even the slightest sign of a leak get them back.

It sounds like they're play ball so good luck.

anonymous-user

84 months

Tuesday 1st November 2016
quotequote all
Fish said:
I'll be honest and say that actually looks fine. The only questionable aesthetics is the use of mortar rather than a sealant. The flashing is a bought one and at least uses lead! it is the correct angle, the flue is >50mm form combustibles, looks like the vermiculite has been taken all the way up and with the flashing being bought the square of lead will be fine for those size of tiles.

Looks like it should be fine form a waterproofing point of view.

Yes the flue will need to be higher...

I'm a bit unsure how it could be less ugly, these things never are pretty the lead will dull down you can't put tiles along the bottom and the cut tile above is fine?
The tile above the pipe should come over the flashing which would protect it better especially from that horrible joint going across the flashing, it would cover it up, once that joint lets go it's prime for a leak.
I might be missing something but that's what it seems to me.

catso

16,495 posts

297 months

Tuesday 1st November 2016
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Waterproof or not, it looks like st...

Fish

4,064 posts

312 months

Tuesday 1st November 2016
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Raygun said:
The tile above the pipe should come over the flashing which would protect it better especially from that horrible joint going across the flashing, it would cover it up, once that joint lets go it's prime for a leak.
I might be missing something but that's what it seems to me.
I think it is just the photo but there appears to be a cut tile over the top of the flashing and the flasing should continue well up under the top tiles... if not yes could be a problem but assuming the flashing is correct should all be fine.

Biker 1

8,595 posts

149 months

Tuesday 1st November 2016
quotequote all
I've seen an awful lot worse!!!!
See what happens when it rains, or you could try hosing it down from above to check for leaks....

paulwirral

3,828 posts

165 months

Tuesday 1st November 2016
quotequote all
There should be a course of cut tiles under the bottom of the flashing with the flashing dressed into the profiles , the tiles above could be cut a little neater and it would be better if the side tiles were back bedded rather than pointed flush , as long as there's plenty of side lap it should be ok . I've done better but I've seen a lot worse .

roofer

5,136 posts

241 months

Tuesday 1st November 2016
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paulwirral said:
There should be a course of cut tiles under the bottom of the flashing with the flashing dressed into the profiles , the tiles above could be cut a little neater and it would be better if the side tiles were back bedded rather than pointed flush , as long as there's plenty of side lap it should be ok . I've done better but I've seen a lot worse .
This. Not a lot of support under the lead either, and the way they have clamped the lead is dire. Very sloppy when you can buy the correct item off the shelf.

bunnysquasher

Original Poster:

50 posts

217 months

Tuesday 1st November 2016
quotequote all
roofer said:
This. Not a lot of support under the lead either, and the way they have clamped the lead is dire. Very sloppy when you can buy the correct item off the shelf.
The support under the lead is only at the very edges on the top and one side, the other side is on the very edge of the battens and the bottom is supported by the gutter!

I managed to get a daylight photo. (thats bits of the felt sticking out into the gutter)

Thank you for your replies.

roofer

5,136 posts

241 months

Tuesday 1st November 2016
quotequote all
That's terrible...very.