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Default Size of Brick Opening for New Gas Fire

Mathew Newton wrote:
wrote:
I've just removed an old back boiler from our lounge fireplace. To
remove it I had to remove some extra bricks which had been added to
reduce the size of the original hole. The actual brick opening is
offset from the centre and had a row of filler bricks on one side to
reduce (and even up) the hole so that it was central.

My question is whether it's necessary to reduce the size of the
opening again for the installation of a gas fire and fire surround.
The surround will actually hide the fact that the hole is large and
offset so is it required for fixing purposes? The height of the
existing opening had been reduced by resting a row of bricks on top
of two old iron gas pipes which had been let in to the bricks on
each side!

We are intending to buy one of those B&Q jobs where you can mix and
match the surround, back piece and fire itself.

Do these sorts of fires fix to the surround itself or require support
from the surrounding wall ? The sizes of the fires seem to be between
470mm and 520 mm which happens to work about right if I add a row of
bricks to reduce the hole size.

I'll post a picture if it's difficult to envisage from the
description above.

Can you get manuals for these types of fires online so that I can
check the requirements before I purchase ?

PS. I'm aware of the testing required of the chimney itself and
removal of the old metal flue used for the back boiler.

TIA

Andy.


In our case, with a Valor fire and surround etc that you've likely
seen in B&Q, the actual fire was held in place with tensioned wire
attached to the back wall - this was pulled through holes in the
front of the far, tightened to pull the fire back against the
surround, and secured.
From the way the fitter was talking this seems to be commonplace.


However, with regards to the actual size of the opening, the fitting
instructions mandated a particular size, slightly bigger than the fire
back itself and said that the rear opening must be bricked to avoid
the potential for heat-related cracking of the surround. Do you
follow what I mean? What I'm trying to say is, whilst the surround
may have the perfect sized opening you can't just leave it at that -
the back must also be bricked in.

I'm still unsure if that's clear or not... I know what I'm trying to
say but having a hard time saying it!

Over to someone else with a better command of the English language...


closure plate & tape ?