Anyone want paying for a cut out?

[einsteinagogo]

If I recall correctly OFTEC regulations required the void to be sealed at the bottom and filled with lightweight vermiculte concrete then weatherproofed at the top. This to prevent condensation from forming in the flue where CO2 and Sulphur Dioxide would dissolve in the condensate and corroding the appliance and flue. Loose vermiculite would pour out if the bottom seal plate was disturbed
The later pre-condensing oil boiler installation manuals specified this. No doubt the condensing boilers now normally installed have more stringent requirements?

yeah, I thought something like that, because that would stop bees in empty non-lined chimneys?

 

[wessexmario]

Building Regs Part J is the reference for chimneys:

http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADJ_2010.pdf

 

[Oscsbees]

Correct but MI's must be adhered to.
Gas Safe, OFTEC and LPG registered engineer.

 

[Dainev]

Hi enrico,has anybody replied, if not,I am interested, I live in the Cardiff area.regards Dai.

 

[enrico]

All sorted thanks.... Nice of you to show interest though
Cheers
E