Covering/filling old disused fireplace.

[AJoe]

Hi there.

Not strictly 'building' I guess, but looking for some advice on the best way to block this fireplace up.

I've had the ancient back boiler disconnected to water and gas pipes (bottom right) have all been capped off, but the fireplace won't be used again. What I wanted to do was frame the opening and screw some plasterboard over the front. The flue will stay in place, but I have read that it would be a good idea to fill the void with insulation to prevent a cold spot in the wall? Or would it be better to brick/block it up?

This entire face (including the opening to the left of the fireplace) will be covered with media wall, so not easily accesible once covered over.

 

[Wayners]

Block up with thermalite blocks
Put a vent in the front or side to keep air flowing.
Plaster over or plasterboard

 

[ree]

OP,
Are you saying that you intend to block off the fireplace, and the "opening" to the left - & then fix/hang various media on the blocked off surfaces?

Whatever, the SS flex flue should be detached from the register plate - the SS flex flue should then be detached from the terminal/cowl on top of the chimney stack.
Pulling the SS flex flue up and removing it out through the chimney stack is best.
The chimney breast flue will then need sweeping.

 

[AJoe]

Block up with thermalite blocks
Put a vent in the front or side to keep air flowing.
Plaster over or plasterboard

Easily done for sure. No need to insulate the void then?

OP,
Are you saying that you intend to block off the fireplace, and the "opening" to the left - & then fix/hang various media on the blocked off surfaces?

Whatever, the SS flex flue should be detached from the register plate - the SS flex flue should then be detached from the terminal/cowl on top of the chimney stack.
Pulling the SS flex flue up and removing it out through the chimney stack is best.
The chimney breast flue will then need sweeping.

Hadn't considered removing the flue (aside from the bottom plate as it protrudes), I 'was' going to leave it in situ.

And yes, there will be fixings all over the area described, although the TV will be mounted pretty much where it already is, above the fireplace.

 

[ree]

OP,
Your pic shows soot contamination in the fireplace opening - the chimney flue will most probably be soot contaminated also. Therefore, the SS flex flue will need removing for the chimney flue to be swept.
If you dont sweep the flue you risk Hygroscopic chemicals eventually coming thro to the surface?

You could fix some framing in the LH recess & the fireplace opening.
You could then plasterboard the whole of the chimney breast, the framed recess, & the wall to the left - this would give you a flat and plumb surface.

 

[AJoe]

OP,
Your pic shows soot contamination in the fireplace opening - the chimney flue will most probably be soot contaminated also. Therefore, the SS flex flue will need removing for the chimney flue to be swept.
If you dont sweep the flue you risk Hygroscopic chemicals eventually coming thro to the surface?

You could fix some framing in the LH recess & the fireplace opening.
You could then plasterboard the whole of the chimney breast, the framed recess, & the wall to the left - this would give you a flat and plumb surface.

Understood.

Thanks for clarifying.