Solid stone wall insulation.

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24 Jan 2016
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Hi,

The age old question...how to insulate our internal walls of our solid stone built barn?

I have read lots on this site and I'm still confused.

The walls are sandstone,about 2ft 6in thick and seem to be doing a very good job, no mould, no obvious damp etc.

We are planning on having a GSHP installed with underfloor heating throughout so we must insulate the walls in order for this heating method to be effective.

I have been advised that a slurry coat ,75mm insulated plasterboard (dot n dab) and then plastered is the way to go.

Any thoughts,

Thanks in advance.
 
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What is your "slurry" coat" for, the walls should be parged, to make them air tight if you insist on using dot and dab. I have some dot and dab walls and under high condensation levels (14 p*** heads at a dinner party) the dot bits go dark with moisture.
Are you sure that the walls are , A, solid, B, watertight?
Frank
 

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