plasterboard on breeze block ceiling

[ourian]

I want to plasterboard my garage ceiling to stop the draughts getting into the flat above.
The floor is constructed of bison beams infilled with breeze blocks.
Do i need to batten and nail the plasterboard or will I be able fix it with dot and dab?

 

[roughcaster]

Hi Ourian,
Anything constructed overhead in my opinion,should be mechanically fixed for safety reasons,(nails,screws,bolts etc) There is a fair old bit of weight in a sheet of 8'x4' plasterboard,and relying on dot and dab to hold the whole ceiling up in place this way would be a bit worrying.If this was my job,I would drill, plug 'n' screw,say 2" x 1.5"(minimum) battens to the ceiling beams/blocks, and fix the plasterboard in place with 1.5"screws.You might even be able to get some kind of insulation between the battens. The plasterboard I would use for a ceiling is half inch, foil backed. Tape and fill the joints,sand and paint if req/d and that's it. Merry Christmas.

Roughcaster.

 

[Micilin]

Hi Ourian,
Anything constructed overhead in my opinion,should be mechanically fixed for safety reasons,(nails,screws,bolts etc) There is a fair old bit of weight in a sheet of 8'x4' plasterboard,and relying on dot and dab to hold the whole ceiling up in place this way would be a bit worrying.If this was my job,I would drill, plug 'n' screw,say 2" x 1.5" battens to the ceiling, and fix the plasterboard in place with 1.5"screws.You might even be able to get some kind of insulation between the battens. The plasterboard I would use for a ceiling is half inch, foil backed. Tape and fill the joints,sand and paint if req/d and that's it. Merry Christmas.

Roughcaster.

In addition to the above, which is how I would do it, it might be worth considering using a firelined board and sealing the perimeter with a fire rated mastic, if you are having draughts.

Although it is not vital in a garage I would check the battens with a straight edge and use packers to get a nice straight ceiling line.

 

[ourian]

thanks for the input fellers, I can now proceed with confidence.
Have a good xmas.