Plaster boarding

Frith

I am plaster boarding the wall to the side/underneath the stairs. It is a damp outside wall (170 year old cottage) which previously had lime and horse hair plaster that was falling off.

Under the stairs I have used battens then insulated plaster board (27mm). There isn't enough space for this on the wall higher up as the gap between the brick wall and the wooden edge of the stairs varies from 3 - 6cm (wall is bowed).

What do you think I should do for the wall to the side of the stairs? I was looking at the foil backed board but haven't space for battens. I saw some metal grippy strip things but have never used those before - has anyone else?

FreeBear

As you have solid brick (stone ?) walls with an existing damp problem, plasterboard is the last thing you want to be sticking up.

Hemp or cork lime plaster will give you a small amount of insulation, not a lot, but something is better than nothing. The lime plaster will also allow the wall to "breath" as long as the outside hasn't been coated with cement render (including K Rend) or a modern masonry paint.

Frith

The outside was rendered (sadly) in the 80s. The living room was battened with kingspan then plaster board 5 years ago and that's been fine. Before that, you'd get paint (that never dried) and bits of plaster stuck to your clothing if you brushed past.

ceredigion

Use tile backer board.