Insulation wallpaper?

sevenhills

I recall using some type of foam wallpaper and some people use thick/thin lining paper.
I my self have blown vynle wallpaper.

I have just been watching a BBC news program about insulating the outer wall of a house. But what effect does inner wallpaper have on energy usage?

FreeBear

sevenhills said:

I recall using some type of foam wallpaper and some people use thick/thin lining paper.
I my self have blown vynle wallpaper.

I have just been watching a BBC news program about insulating the outer wall of a house. But what effect does inner wallpaper have on energy usage?

Wallrock is one such thermal wallpaper. 4mm thick, and one roll covers 15m² for just £140 per roll plus adhesive. 4mm of insulation may reduce the heat loss of an external wall just enough to reduce condensation, but isn't going to make enough difference to justify the expense.

For comparison, I've spent £250 on a pile of Celotex type insulation boards to line the external walls on the upper half of my 1920s semi. Aiming for 75mm on the walls, and 25mm on the window reveals. Early indication from having done one small room, the improvement is substantial and I should recover the cost of materials through energy savings within 5 years - Some of the improvement is through killing some ugly cold draughts.

Bendy_House

Does Wallrock work? Pretty sure it helps. Can the cost be justified? That's got to be a tall order - it is stoopidly expensive.

Mind you, it isn't very disruptive, so if it managed to, say, cut condensation on walls, it might be considered worthwhile. 

rob7475

I used wallrock in my son's box room with two external walls and the condensation problem has now been cured (although this could be down to the PIV unit I've also installed).

I used wallrock as the room is barely big enough for a bed as it is so to do a proper job, I would have had to strip the 100 year old plaster off the two external walls before re-doing with 25mm celotex etc as I can't afford to lose any space in the room. My OH didn't want the mess of stripping the plaster off the walls so we went with Wallrock. I hate the way the wall feels with it on - it's almost soft to the touch. I don't spend that long stroking the walls so I've learned to live with it.

FreeBear

rob7475 said: I used wallrock as the room is barely big enough for a bed as it is so to do a proper job, I would have had to strip the 100 year old plaster off the two external walls before re-doing with 25mm celotex etc as I can't afford to lose any space in the room.

The room I insulated originally measured some 2.4m by 2.6m. After stripping the plaster off the walls, 75mm of Celotex went up. To be honest, you'd be hard pushed to notice the (minimal) loss of floor space.

OK, the work was very messy and generated quite a bit of waste, but being lime plaster, it got recycled as hardcore for a shed base.