I dread the thought of having to replace my combi which is in an airing
cupboard and a previous posting has got me thinking about the loft.
What are the rules governing using the loft for a combi? I don't have loads
of space as the roof is somewhat like a pyramid so it has lots of struts.
Extending the pipes upwards to the loft would seem easier than altering them
to suit a different boiler in a restricted space.
It's discouraged rather then prohibited, and if you are going to site it
there you should* have good lighting, flooring, a barrier to stop your
boiler repair man stepping backwards into the trapdoor space, and a proper
* can't remember which of these 'shoulds' are writ in stone and which I've
invented, but I'm sure you'd agree they're all commonsense :-)
Depending on whether your house is mid-terrace and/or has a gable end you
may have to have the flue go up through the roof. You'll also have to
arrange for the pressure relief discharge pipe to get from the boiler
location to almost ground level, and if it's a condensing boiler to route
the condensate drain soemwhere. However none of these is insuperable.
Experiments to test the existence of Sod's Law by dropping
slices of buttered toast all failed. That's Sod's Law.
Thanks. My existing Worcester Combi has a flue through the roof as it is in
the 'middle' of the house. It is not a balanced flue and the airing cupboard
location does not quite meet the regs for air intake (tests each year are
I will take an objective look at the loft. Please continue to add any
"John Stumbles" <email@example.com> wrote in message
Take a look at the German manufactured boilers such as Vaillant.
Many of them have a flue option for operation through the roof because
this is very popular in multi-occupancy properties there.
The flue is concentric and draws air in through the outer part and the
inner is the outlet so making it room sealed and balanced.
To email, substitute .nospam with .gl
A modern combi can have its flue taken through the roof tiles. If it is a
condensing combi, it is the best solution. Just get the flue extension and
flue tile from a builders merchants. Most combi's have built-in frost
protection, so no problems there. Try to have a water isolator cock and
electrical isolator switch in the old airing cupboard below. If problems
them switch and turn off. Don't forgot to lag with double thickness pipe
Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.524 / Virus Database: 321 - Release Date: 06/10/2003
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.