Dry-lining old Victorian House.

TiNcAn

/Moved from DIY forum.
I have an old Victorian red brick (pebbled dashed!) house which has no DPC and concrete floors downstairs.
The original plaster is now literally falling off the walls so I have striped them back to the brick.
After much reading, I am considering to go a similar approach as described in this blog.
http://jack-kelly.com/insulating_our_victorian_living_room

My plan would be to metal dry-lining system that allows for an air cavity of ~25mm.
Additional air bricks would be added to the external wall to aid the circulation of air in the cavity with the outside to remove trapped moisture.
On top of the metal dry-lining system I would add 50mm rigid insulation, vapour barrier and finally plasterboard.
This should prevent any warm air coming in contact with the cold air from outside and condensing inside the wall somewhere .
Any damp rising up through the brick would be allow to evaporate and exit through the air bricks.

Other approaches I have read for old brick walls would be to use a lime plaster and some breathable insulation (sheeps wool).
I think the dry-lined approach would be significantly easier, and less costlier. The metal system should also be a lot quicker than the wooden stud walls and not suffer from rot or warping.
I would like to others opinion and whether they would have any suggestions or experience doing this? 

The exterior pebble dash is also something which I think needs to come off since it is probably trapping moisture in the bricks.

BryanF

IMO PIR insulation’s should be avoided in old buildings. Breathable solutions have come on a long ways from lime and sheeps wool. I’ll say no more.
This is covered to death on boards.

Calahonda52

Bryan
This is a copy, not a /Moved from DIY forum.

Maybe amalgamate

BryanF

Op please advise mods which thread you want left open thanks