Advice on insulated plasterboard

[Salv Tona]

hi all I'm new to this forum so please bare with me! So myself and my partner have just bought a 1927 semi in need of full refurbishment. We are in the process of stripping the property back to brick. As the property is of a solid construction 200mm I was thinking of using dot and dabbed insulated plasterboard on all external walls 37.5mm thick. What do I need to do to prep and is dot and dab the right idea?

Thanks
Salv

 

[motorbiking]

if you can. go for slightly thicker insulation as it will make the job more worth the effort from as insulation perspective.

Also you can use frame fixers instead of dot n dab if you prefer. Basically you take it back to brick put your plaster board up, check it level and then tape n skim the joints. Also you can do any electrical chasing at the same time.

 

[phatboy]

Only dot'n'dab if the walls are not flat enough to mechanically fix alone, as it makes the room a bit smaller and is a load more work.

I think 60mm of insulation + plasterboard (72.5mm) is the best, and meets new home standards. Don't forget to deal with the window reveals. We hired a large disc cutter and cut back the blockwork as far as the window so we could get 40mm thickness of insulation + plasterboard in there.

 

[Mr Chibs]

I used 50mm on top of 25mm roofing battens, on solid brick house.

I don't really like dot & dab, and screwing shelves etc I can see being an issue, however it's a slow process with battens! as you have to pack to get level.
I used concrete screws to attach the battens to wall, it's rock solid, so hanging anything off it shouldn't be a problem.

Yes, I've lost around 85mm off the rooms... but I live in an old house, and know how cold they can get.

I don't think insulated plasterboard has a built-in vapour barrier either (please check)...foil backed insulation boards do.

 

[motorbiking]

Th insulation needs to be packed tightly against the cold wall. Battens should be avoided if possible, though i made that mistake myself also.

 

[Mr Chibs]

Th insulation needs to be packed tightly against the cold wall. Battens should be avoided if possible, though i made that mistake myself also.

From what I had read, this is if you are using external insulation...

Have you had problems with doing the batten method? if so, what?