I need to line out a recently exposed fireplace with mdf. The back wall,
however slopes away by ~30mm as it rises.

What's the best/easiest way to get the mdf vertical? Can I used dot and
dab as used for fixing plasterboard? Or will that wreck the mdf?

--
Frank
(Beware of spam trap - remove the negative)

"F" wrote in message
...
I need to line out a recently exposed fireplace with mdf. The back wall,
however slopes away by ~30mm as it rises.

What's the best/easiest way to get the mdf vertical? Can I used dot and
dab as used for fixing plasterboard? Or will that wreck the mdf?

--
Frank
(Beware of spam trap - remove the negative)

2 questions

Does the back wall need to be vertical?

Why can't you fix the back wall mdf to the side wall mdf instead of to the
wall itself?

Tony

On Fri, 22 Dec 2006 13:53:55 -0000, "TMC" wrote:


"F" wrote in message
...
I need to line out a recently exposed fireplace with mdf. The back wall,
however slopes away by ~30mm as it rises.

What's the best/easiest way to get the mdf vertical? Can I used dot and
dab as used for fixing plasterboard? Or will that wreck the mdf?

--
Frank
(Beware of spam trap - remove the negative)

2 questions

Does the back wall need to be vertical?

Why can't you fix the back wall mdf to the side wall mdf instead of to the
wall itself?

Tony





Or fix the slope firstly by fitting straps adjusted to the vertical by packing
them out then fixing the mdf to the straps .

On 22/12/2006 13:53 TMC wrote:

Does the back wall need to be vertical?

Probably not, but Management may well decide otherwise once the job is
'finished'.

Why can't you fix the back wall mdf to the side wall mdf instead of to the
wall itself?

I could - I actually thought of building the 'box' outside the opening
and then sliding it in - but am concerned about rigidity...

--
Frank
(Beware of spam trap - remove the negative)

F wrote:

I need to line out a recently exposed fireplace with mdf. The back wall,
however slopes away by ~30mm as it rises.

Not having an open fire in there then I take it? ;-)

What's the best/easiest way to get the mdf vertical? Can I used dot and
dab as used for fixing plasterboard? Or will that wreck the mdf?

I would use some 3x2" or possibly 2x2" for some vertical battens, which
you could scribe and cut to the profile of the wall. Once you have fixed
battens that are vertical on the facing side, the MDF will be easy.

--
Cheers,

John.

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On 22/12/2006 14:17 John Rumm wrote:

Not having an open fire in there then I take it? ;-)

No, need to leave it clear for some old geezer on Sunday/Monday night...

--
Frank
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On 2006-12-22 17:10:10 +0000, Owain said:

F wrote:
I need to line out a recently exposed fireplace with mdf. The back
wall, however slopes away by ~30mm as it rises.
What's the best/easiest way to get the mdf vertical? Can I used dot and
dab as used for fixing plasterboard? Or will that wreck the mdf?

Squirty foam at the back of the fireplace. Press the MDF gently onto
the foam until it's vertical.

Owain

But it does require a whole large can evil grin

On 22/12/2006 17:10 Owain wrote:

Squirty foam at the back of the fireplace. Press the MDF gently onto the
foam until it's vertical.

Thanks for the suggestions.

I took the easier way out and built the box outside of the opening and
then slid it in. It's already much more rigid than I expected (ooer!)
but a couple of wedges and some architrave will hold it firmly in position.

--
Frank
(Beware of spam trap - remove the negative)