Cold wall - condensation

moneysaver1978

FreeBear said:

moneysaver1978 said:

FreeBear said:

moneysaver1978 said:

Saw in a local Facebook group about cold wall and there were two mentions: Dryzone Anti-condensation paint and also a thermal liner.

Has anyone had used something like these before?

Thermal wallpaper/liner works for some people, but is not a long term solution. Any paint that claims magical insulating properties should be treated with a healthy dose of skepticism - The Dryzone stuff claims to contain hollow glass microspheres  that increases the surface temperature of the wall. Whilst that might be true, the difference will be imperceptible, and certainly not worth the money.

If you have a cold wall, the most cost effective solution is to insulate (either with PUR/PIR or cork/woodfibre) and put some heat in to the space.

Thank you, I had the same feeling!

What are yours thoughts about fitting the PIRs around the cupboard fixings? Should everything be removed from the wall, and railings etc cut to size to fit the “new” wall?

Not sure I follow what you are asking....

Currently insulating am external wall in a bedroom here. The wall has been stripped back to bare brick, and multiple layers of Kingspan stuck on. Aiming for 75mm of insulation which will exceed current requirements without losing much in the way of floor space.

Oops sorry I meant to reference photos from my earlier post -  https://forums.moneysavingexpert.com/discussion/6490789/cold-wall-condensation

In the cupboard, we have railings, shelves, fixed to the actual internal wall. So should I add PIR around these (leave the fixings as they are) or should I cut the railings and shelves shorter (fix these onto the PIR boards)?

The former would be a lot easier but am unsure if cold spots would become a bigger issue

FreeBear

moneysaver1978 said:

FreeBear said:

moneysaver1978 said:

FreeBear said:

moneysaver1978 said:

Saw in a local Facebook group about cold wall and there were two mentions: Dryzone Anti-condensation paint and also a thermal liner.

Has anyone had used something like these before?

Thermal wallpaper/liner works for some people, but is not a long term solution. Any paint that claims magical insulating properties should be treated with a healthy dose of skepticism - The Dryzone stuff claims to contain hollow glass microspheres  that increases the surface temperature of the wall. Whilst that might be true, the difference will be imperceptible, and certainly not worth the money.

If you have a cold wall, the most cost effective solution is to insulate (either with PUR/PIR or cork/woodfibre) and put some heat in to the space.

Thank you, I had the same feeling!

What are yours thoughts about fitting the PIRs around the cupboard fixings? Should everything be removed from the wall, and railings etc cut to size to fit the “new” wall?

Not sure I follow what you are asking....

Currently insulating am external wall in a bedroom here. The wall has been stripped back to bare brick, and multiple layers of Kingspan stuck on. Aiming for 75mm of insulation which will exceed current requirements without losing much in the way of floor space.

Oops sorry I meant to reference photos from my earlier post -  https://forums.moneysavingexpert.com/discussion/6490789/cold-wall-condensation

In the cupboard, we have railings, shelves, fixed to the actual internal wall. So should I add PIR around these (leave the fixings as they are) or should I cut the railings and shelves shorter (fix these onto the PIR boards)?

The former would be a lot easier but am unsure if cold spots would become a bigger issue

What I would do is remove anything fixed to that wall. Put a layer of Celotex/Kingspan type board up, followed by a sheet of MDF or melamine faced chipboard. Secure everything to the brickwork behind with some hammer fixings (the type used for window frames) - Pick a length some 40mm longer than the thickness of the insulation and MDF/MFC. That should give ~25mm in the brickwork. But if the walls are Thermalite blocks, you might want something a little longer.

Seal around the edge of the insulation board with mastic, and that should stop warm moist air getting behind and condensing out unseen.

DRP

FreeBear said:

moneysaver1978 said:

FreeBear said:

moneysaver1978 said:

FreeBear said:

moneysaver1978 said:

Saw in a local Facebook group about cold wall and there were two mentions: Dryzone Anti-condensation paint and also a thermal liner.

Has anyone had used something like these before?

Thermal wallpaper/liner works for some people, but is not a long term solution. Any paint that claims magical insulating properties should be treated with a healthy dose of skepticism - The Dryzone stuff claims to contain hollow glass microspheres  that increases the surface temperature of the wall. Whilst that might be true, the difference will be imperceptible, and certainly not worth the money.

If you have a cold wall, the most cost effective solution is to insulate (either with PUR/PIR or cork/woodfibre) and put some heat in to the space.

Thank you, I had the same feeling!

What are yours thoughts about fitting the PIRs around the cupboard fixings? Should everything be removed from the wall, and railings etc cut to size to fit the “new” wall?

Not sure I follow what you are asking....

Currently insulating am external wall in a bedroom here. The wall has been stripped back to bare brick, and multiple layers of Kingspan stuck on. Aiming for 75mm of insulation which will exceed current requirements without losing much in the way of floor space.

Oops sorry I meant to reference photos from my earlier post -  https://forums.moneysavingexpert.com/discussion/6490789/cold-wall-condensation

In the cupboard, we have railings, shelves, fixed to the actual internal wall. So should I add PIR around these (leave the fixings as they are) or should I cut the railings and shelves shorter (fix these onto the PIR boards)?

The former would be a lot easier but am unsure if cold spots would become a bigger issue

What I would do is remove anything fixed to that wall. Put a layer of Celotex/Kingspan type board up, followed by a sheet of MDF or melamine faced chipboard. Secure everything to the brickwork behind with some hammer fixings (the type used for window frames) - Pick a length some 40mm longer than the thickness of the insulation and MDF/MFC. That should give ~25mm in the brickwork. But if the walls are Thermalite blocks, you might want something a little longer.

Seal around the edge of the insulation board with mastic, and that should stop warm moist air getting behind and condensing out unseen.

Freebear, for fire safety reasons,shouldn’t any PIR be put behind plasterboard?

Genuine question, as I’m no expert but I’d assume that would be the case?

moneysaver1978

FreeBear said:

What I would do is remove anything fixed to that wall. Put a layer of Celotex/Kingspan type board up, followed by a sheet of MDF or melamine faced chipboard. Secure everything to the brickwork behind with some hammer fixings (the type used for window frames) - Pick a length some 40mm longer than the thickness of the insulation and MDF/MFC. That should give ~25mm in the brickwork. But if the walls are Thermalite blocks, you might want something a little longer.

Seal around the edge of the insulation board with mastic, and that should stop warm moist air getting behind and condensing out unseen.

Thank you, FreeBear! This sounds like Option B



Which probably means taking the whole thing off which sadly isn't an option.

Would Option A (plus a vent on cupboard door) be worse than doing nothing?