In the next week or so I'm going to get my bathroom wall
plasterboarded on to battens .This is an outside wall and to help heat
retention I was proposing to put insulation material between the
battens . It's a cold room during the winter .
I take it that there will be no problems doing this and is it the same
stuff that gets used for loft insulation I should be using .??
I'll be securing it (at the top at least) to stop it slumping down .
You'd be better off using Kingspan or Celotex rigid insulation boards;
they are much more efficient than fibreglass wool, so you'd need much
less thickness to achieve the same level of insulation. (They also lend
themselves to insulating vertical surfaces!). How deep were you
proposing to make your battens? Hope you have a big bathroom...
I've got enough trouble getting 8' x 4' p/board up 2 flights of stairs
without adding to that problem with other boards .....The batten faces
are about 40mm off the wall........the bathroom is about 4.5m x 1.4 m
but why did you ask that ??
ps..when I said before it is an exterior wall ,it's actually on a
staircase so it's not totally exterior but it is still cold but not
affected by ,for example,rain..
Well it's not a stairway as in a modern block of flats
.carpeted,external door etc,etc .It is a tenemnet so the staicase gets
cold as there is no external door and the wind whistles up and down
the stair .
Best of all is celotex, rather than rockwool - twice the insulation per
But rockwool works fine - about 4-6" is good. You Should not need to
DO use foil backed plasterboard in a bathroom, to avoid condensation
inside the walls.
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