I need to insulate 4m^2 wall.
The wall is solid double brick, pebbledash, 2ft eaves overhang.
The wall sits between 2 cavity walls, with one cavity wall being just 3ft long where it meets a 2x4" mortar debris infill bay window w/pebbledash.
The 4m^2 wall does not seem damp, browning under plaster is fine.
However the underfloor by the bay further along has a slight damp odour.
Going PIR+PB...
- Kingspan say K17 dot-n-dab. That is £150 from Jewsons, the only place that will sell me two sheets of 50+12.5mm. That's quite a price. No-one else locally has it, online will only ship 5 sheets which at £250 is better value but no use to me with PB on it.
- Kingspan go on to say K18 on tanalised batons as solid walls CAN get damp.
Rolling my own...
- Seconds do Kingspan Foil-50mm-Foil for £12 a sheet.
Q - Can I just screw that to batons, then through-screw plasterboard and skim over?
I'd actually prefer a PIR without PB on it as lighter to handle.
Thanks.
The wall is solid double brick, pebbledash, 2ft eaves overhang.
The wall sits between 2 cavity walls, with one cavity wall being just 3ft long where it meets a 2x4" mortar debris infill bay window w/pebbledash.
The 4m^2 wall does not seem damp, browning under plaster is fine.
However the underfloor by the bay further along has a slight damp odour.
Going PIR+PB...
- Kingspan say K17 dot-n-dab. That is £150 from Jewsons, the only place that will sell me two sheets of 50+12.5mm. That's quite a price. No-one else locally has it, online will only ship 5 sheets which at £250 is better value but no use to me with PB on it.
- Kingspan go on to say K18 on tanalised batons as solid walls CAN get damp.
Rolling my own...
- Seconds do Kingspan Foil-50mm-Foil for £12 a sheet.
Q - Can I just screw that to batons, then through-screw plasterboard and skim over?
I'd actually prefer a PIR without PB on it as lighter to handle.
Thanks.