Bodged Flue Installation
Posted 22 April 2016 - 10:34 PM
It's a 200mm twin wall flue.
Fitted in a bungalow with a pitched cathedral roof, they hacked a hole in the ceiling and one through the OSB. All very rough.
The hole inside is just covered by a decorative plate and outside it is just the slates and the flashing. The membrane inside and out is cut back leaving it breached.
They said that the have to cut cumbustiables back 50mm from the flue.
Can anyone tell me how it should have been done please?
Posted 23 April 2016 - 06:04 AM
Have a quick look at this and you will see correct procedure...
When you say membrane, I assume roofing as opposed to airtight?
Posted 23 April 2016 - 06:28 AM
The bit that seems odd to me, other than the very rough hacking out of plaster, roofing OSB and membrane, is cutting the membrane too far back and then putting another piece of membrane in, in attempt to make it water tight. The membrane touches the twin wall hich gets very vey hot.
I would have expected a fire break plate and the membrane lapping over it.
Posted 23 April 2016 - 12:32 PM
There isn't much science involved here I'm afraid, as stated, it's pretty much exactly what I'd expect to see from a run of the mill stove fitter.
I'm afraid that you should have asked these questions before asking anyone to undertake any work, as then you'll have given them a standard to work to, or at the very least an opportunity to get back in their van and Foxtrot Oscar.
Ask them to redo the membrane in accordance and that's going to be your lot imho, but if you want more work / making good done then there's no harm in asking.
Posted 23 April 2016 - 02:16 PM
Lesson learned but will probably be forgotten by next week.
I may get him to just give me the Hetas cert and then redo the job properly.
Posted 23 April 2016 - 07:13 PM