Gypsum-vapor barrier-gypsum?

[Jpetter]

Hello,

I'm completely renovating a brick house from 1963. The interior ceiling surface consists of gypsum + wood paneling. The wood paneling has now been removed. Is it okay to apply a layer of construction plastic (vapor barrier) against the existing gypsum board and then a new gypsum board on top of that?

Other details that might be useful to know:

Natural ventilation to Heat Recovery Ventilation (HRV)
Oil boiler to Air-to-water heat pump
Additional insulation in the attic

 

[TheGame]

Why are you doing that? What's under (on top of) the plaster?

 

[Jpetter]

Why are you doing that? What is under (on top of) the plaster?

Why are you doing that? What is under (on top of) the plaster

Why are you doing that? What is under (on top of) the plaster?

To prevent the warm air from reaching the attic and turning into condensation. Above the plaster is insulation.

 

[TheGame]

Can't be sure if it's right.
Feels like you've worked backwards.
If you're going to have the plastic, it should be before the gypsum.
Are you sure there's nothing there already?

 

[witten]

Hi,

I am completely renovating a brick house from 1963. The ceiling's surface consists of plaster + wood panel. The wood panel is now removed. Is it okay to apply a layer of construction plastic (vapor barrier) against the existing plasterboard and a new plasterboard on top of that?

Other details that might be good to know:

Natural ventilation to heat recovery ventilation
Oil furnace to air-water heat pump
Additional insulation in the attic

There are no moisture risks with placing it there, and it is the only reasonable thing to do in your case if you don't want to tear down more.