Screw drywall into wall with hardboard

[FinneVirta]

Hi!

I am in the process of renovating the kitchen in our house built in 1959. Our wall currently consists of a masonite board + some insulation (elephant insulation I've heard somewhere?), quite visible through the old vent-hole in the pantry. Now I'm planning to put plasterboards over this to be able to tile them since the masonite feels a bit too weak and movable.

- Should I remove the masonite and start over with plasterboard?
- (If I keep the masonite) I have bought 90 plasterboard, but the studs seem to be 60, should I switch to 120 plasterboard or does the masonite pull enough so that I can ignore hitting the studs?

 

[surris]

The Masonite can remain, but you need to screw into the studs.

 

[FinneVirta]

The Masonite can stay, but you need to screw into the studs.

Okay, but would you have switched to 120 gypsum instead, or can 90 gypsum work well?

 

[surris]

Okay, but would you have switched to 120 gips instead, or can you get good results with 90 gips?

No, you need 120 so that you have studs to screw into everywhere.