On Fri, 30 Nov 2007 09:16:38 -0800, swimmydeepo wrote:

On Nov 30, 4:53 pm, Andy Hall wrote:
On 2007-11-30 16:25:58 +0000, said:

How safe is it to fix a boiler of about 45Kg to a breeze block wall?
The manual states simply to fix it on a strong wall. Breeze blocks
are widely used for external wall (on the inner leave at least), so
I'm assuming it is safe.
Perhaps it is better to use suitable plugs...

Any suggestions?

Yes you can.

Keep in mind that the weight is predominantly in a downward direction.

You can use heavy duty long fixings suitable for the material.

I used polyester resin fixings for mine. This technique involves the
use of threaded studs of a diameter suitable for the holes in the
boiler mounting bracket, and of a length of (say) 100mm. Holes are
drilled into the wall 2mm oversize for the studs and cleaned out. A
special two part resin with one part containing mortar is injected into
the holes and the studs inserted. After a suitable time (minutes
to hours depending on resin and temperature, the bracket can be fixed
to the wall.

This method is ideal for heavy weights on breeze blocks because there
is not the risk of crumbling around the fixing.

Screwfix among others sell the materials

Thanks, I'll check it.
Meanwhile, I've forgotten a very important detail. The wall at the
moment is bare...no rendering, but I've planned to use celotex
insulation and plasterboard...I guess I'll have to use a proper studding
frame behind the boiler and then look for longer screws (or these
polyester fixings) to account for the thickness of the studs.
On the other hand, it may seem a bit wacky but what about fixing the
boiler straight to the bare wall and then later on fixing the insulation
and plasterboard all around the boiler? The cold bridge shouldn't be an
issue as the boiler is on when it's cold outside. At the moment I
haven't really made my final decision...I just prefer to mount the
boiler now and get the heating system going. The drywall can wait.

Read the manual! What does it say about the servicing and operational
clearances around the boiler casing? Competent d-i-y means reading the
F**g manual. Even if the boiler requires only a few mm of clearance on
the sides it may well require much more at the top.




--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html