fitting plasterboard to external wall?

mouk

might sound daft but...

basically my terraced house is made of solid walls.

i along with the neighbour share the side(covered gully) access to our front doors.

as you will know that there is no cavity between the external facing bricks and internal ones.

ive been looking at various methods on keeping the house warm...
one of my ideas is to fit plasterboard on one side of the external wall(which is covered from rain/moisture etc)

is this ok?

ormus

no. not a good idea. they are made for internal use only. moisture will penetrate the PB even if under cover.
far better to use insulation slabs, and then cover with some external cladding.
8x4 marine ply maybe?

benichembla

Agree with ormus, not a good idea, it wouldn't last the winter out.
Depending on your budget the best option would be something like a Tilebackerboard, it has fantastic Insulation properties and is 100% water resistant, it is even used in damp enviroments, like shower enclosures and for Underfloor Heating to insulate cold damp floor slabs before fitting the heating, it is also available in various thicknesses from 6mm to 60mm.

Good luck.

andyhop

benichembla wrote: »

Agree with ormus, not a good idea, it wouldn't last the winter out.
Depending on your budget the best option would be something like a Tilebackerboard, it has fantastic Insulation properties and is 100% water resistant, it is even used in damp enviroments, like shower enclosures and for Underfloor Heating to insulate cold damp floor slabs before fitting the heating, it is also available in various thicknesses from 6mm to 60mm.

Good luck.

Tilebacker cememt boards such as Hardibacker have no insulation properties at all

WEDI boards with a cement face,sponge core do have good insulation properties

ic

Is this shared access a passageway between buildings, or just an area with an overhanging roof? If its a passageway, surely a door on one/both ends would work wonders at keeping out the elements and make the house warmer.

mouk

ic wrote: »

Is this shared access a passageway between buildings, or just an area with an overhanging roof? If its a passageway, surely a door on one/both ends would work wonders at keeping out the elements and make the house warmer.

good idea...
will have word with my neighbour