Insulating plaster v thermal liner

Question

Which gives the best insulation result? I’m trying to insulate a staircase wall, so there is no room for thick thermal boards

Leigh · Accepted Answer

If you don’t want to use thermal boards, the next best option is to Barton the walls and use a thinner insulation and you can use 9.5mm plasterboard on top.

Bb · Answer

nsulated boards are by far the best, it ups the u value of the walls and eliminates

Matthew · Answer

Yes insulation board would be your best choice for insulation

Patrick · Answer

Hi Jane,

Insulated liner would be cheaper, thinner and less disruptive. However, as you might already know it won't come close to the thermal properties offered by an insulted plasterboard. Given that it's a stair case your choice is limited. The liner will improve the thermal quality of the wall with next to none loss of width. Tekwarm do an insulted plasterboard that is about 1 1/2" thick - if you can afford to lose that much it's a way better option.

Hope this helps,

Patrick

Callum · Answer

insulated boards are by far the best, it ups the u value of the walls and eliminates mould.

Michael · Answer

Hi ,you can get insulated plasterboard starting from around 25mm in thickness, obviously not on par with what 80mm etc would give you but still applied correctly would give you value, price probably around £25 per 2.4×1.2 sheet.
Hope that helps

Dean · Answer

Ewi render an option? Instead of making the rooms smaller inside make the walls thicker on the outside this means you can get a good thick insulation on the wall

Ben · Answer

I’d personally grit the wall in a British gypsum grit then board with a 9m board or 12.5

Insulating plaster v thermal liner

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