"IMM" wrote in message ...
"N. Thornton" wrote in message

Sounds like a good opportunity to remove it all.
Render increases damp more often than it
reduces it,

Only if it is not done properly.

wrong

as the net flow of water is from inside
out, not from outside in. Humans produce
loads of water vapour every
day, then theres showers etc.

Very true, Some of the goons here don't know that, and think that humidity
can be higher outside a house than in.

RH can be, and often is.


The only time I'd be cautious about removing it is if the concrete
wall is disintegrating, and the render is being questionably used to
hold it together.

I would think it is there for decoration only.

The best is to install exterior foam high performing insulation. This
building would need some. Some of this foam can be rendered directly. Some
needs a board over for the render to be applied. Exterior insulation is a
great idea as it virtually eliminates cold bridging.

wrong, as usual. The best insulation is 2 combi boilers of course!


Regards, NT