Insulating and old flint rubble wall?

[mpooley]

Hi all and thanks for reading this post

I have a few old exposed flint rubble walls in very good condition which have had a silicone damp course injected.

It seems perfectly dry!

I want to add 100mm of insulation to the interior.

I can think of two options:

Insulation backed Plasterboard - dot and dabbed?
a frame with rockwool, vapour barrier over that and then plasterboard?

My only worry is possible damp either rising or condensing.

Can anyone suggest which is best ,any problems i might encounter or another method entirely?

Thanks for your help


Mike

 

[PrenticeBoyofDerry]

I would not dot'n'dab thermaline boards, but you could build a stud and fix to them.
If you google "K18" you can view a PDF on this kind of stuff. i think this is the link www.insulation.kingspan.com/uk/pdf/k18.pdf
The vapour barrier will stop condensation and you could use foil backed duplex boards which have a vapour check on them, so no need to install vapour barrier, as do thremaline boards.

 

[mpooley]

I would not dot'n'dab thermaline boards, but you could build a stud and fix to them.
If you google "K18" you can view a PDF on this kind of stuff. i think this is the link www.insulation.kingspan.com/uk/pdf/k18.pdf
The vapour barrier will stop condensation and you could use foil backed duplex boards which have a vapour check on them, so no need to install vapour barrier, as do thremaline boards.

Thanks Have read that and will look for suppliers now.

I wonder could I glue it to the wood frame?


Mike

 

[PrenticeBoyofDerry]

glue what?

 

[mpooley]

glue what?

The kingspan board

 

[PrenticeBoyofDerry]

The kooltherm can be screwed tight to the timber stud work, using drywall screws. Any infill between stud work is fitted tightlly between the timbers and will sit there.