Ceiling gypsum directly on raw wood boards?

[hempularen]

We are going to install a gypsum ceiling in a room in the summer house this weekend, following a water damage incident. Above the existing ceiling, there is a raw wooden board ceiling (from a 50s house). The main plan is to attach the gypsum boards directly against it, without first installing narrow panel battens. I'm a bit worried that there might be irregularities that could cause problems. Anyone with experience?

 

[klypert]

We just did as you described, we just made sure that all screws, nails, and clips were removed before we started, then we went ahead. Can't see any problems right now, but I'm not finished with the roof yet so I can't say what the final result will be....

/RF

 

[Locke]

We are currently installing 45 studs, OSB, and drywall in the living room. Joint compound applied to seams. It would have been enough with a sparse setup, but we're also installing spotlights.

 

[Mr L]

I am currently screwing drywall (12.5x1200x2400) directly onto the rough planking, and in the rooms I've completed, it has turned out well.

 

[PNO]

I have done the same on both walls and ceilings. Usually no problem if you clear nails and other debris first. It's often good to run something straight, like a long level, over the surface to see if any plank seems to have risen. A regular hand plane or a carpenter's axe is good for removing any bumps. Some caution with screwing is also good so you can really feel that the sheet is lying flat. If it's significantly uneven but you don’t feel like doing anything about it, then renovation plaster is preferable. It is more flexible and also holds much better when screwing if the base is poor.

 

[hempularen]

Thank you for the replies, it seems like it should work.

We are going there tomorrow afternoon to tear down the damaged fabric-stretched ceiling and check the situation. Then on Saturday morning, I will go to buy materials, but it's an additional 100 km trip. So, one would like to be sure that lath is not needed as well.

 

[ja73]

I have screwed Huntonit boards in a few rooms directly onto the raw wood with very good results. More expensive than plasterboard but ready immediately.

 

[Morgess]

It is important to check that the base is securely fastened. The gypsum ceiling will weigh a bit, and it's not fun if the ceiling collapses because it wasn't secured sufficiently! Check that the wood paneling is nailed or screwed properly. 3-inch nails are preferable. If beadboard is in the ceiling, it's even more important to add additional nails/screws because they are usually only nailed with brads. Good luck!