Block work wall and insulation.

[DonDonson]

Hi, Im going to get rid of the rotten timber frame on one side of my conservatory and build a 4" brick wall from floor to ceiling and then render it on the out side but need a few questions answered first.

What would be the best blocks to use?

What would be the best way of insulating it on the inside baring in mind I don't want to use up to much space. I was thinking insulated plaster board but wasn't sure wether I have to leave a cavity or can fix them straight to the blocks.

Any help appreciated.

 

[tony1851]

1. Why insulate if it's a conservatory?

2 If the wall is only 4" thick, it will get damp inside, even with rendering

3. How will you secure the end of the wall sructurally (ie the outside corner)?

 

[DonDonson]

Sorry should of made my self clearer , I'm replacing all old timber frame with upvc as old conservatory is rotting, and also replacing roof with tiles, celotex, plasterboard etc as we want to make it a more useable room as its too hot in summer and bloody freezing in winter. There isn't any doors dividing the living room from the conservatory so we loose a lot of heat.
As for the proposed block work wall it will be against the neighbours fence and the outside corner will have about a 3ft return up to the French doors.
Have you any suggestions for a better way of doing the brickwork considering that I don't want to waste to much room, the timber frame wall at present has no glass as I removed the units years ago due to the units seals had gone and didn't want to be looking at the neighbours fence approx 3" away so replaced with 18" WBP but this used to condensate.
The base of the conservatory is concrete, the frame is sitting on 4 rows of bricks (2 below ground level) and brick foundation is 20" deep after diging to check.
Would appreciate any advice

 

[noseall]

I'm replacing all old timber frame with upvc as old conservatory is rotting, and also replacing roof with tiles, celotex, plasterboard etc as we want to make it a more useable room

So, what you intend doing is replacing a run down 'conservatory' with a hybrid jobbie with a tiled insulated roof, a full height wall on the neighbours side and all the rest to be upvc sitting on the existing four course brick and concrete base....?

There isn't any doors dividing the living room from the conservatory

So basically you need to build an extension then to building reg's.

Anything less and you will be disappointed with the results and will always end up with a cold area.

Anything more and it is an extension.

There is no hybrid.

 

[DonDonson]

The roof is made of 6x2 timber joists not just a alley or plastic frame so is not like I'm just putting a whole new roof on as only the plastic sheets will be removed
The timber conservatory needs replacing as is rotting around the bottom after 25 years so makes sense to use upvc and I thought would be better to block work up the unglazed side as it makes it more practical. The foundations to me seemed quite addiquite for this work.