Installing a gypsum ceiling under a floor where the floor joists are to be replaced
Since floor 1 must be completed before floor 2, there is a small problem. I need to install a gypsum ceiling this summer, while the floor joists for the floor above will be replaced in the spring. There is no space to install 45x45 battens under the existing floor joists as this affects the finished ceiling height. Steel straps will be difficult as the floor joists will be replaced.
A bit cumbersome but...
Screw the sparse panel diagonally from above.
When the beams need to be replaced, loosen the screws from one beam at a time and replace it.
Screw the sparse panel diagonally in the same way, but into the new beam (shim with masonite if necessary).
Start replacing the next beam.
Repeat until all are replaced.
Screw the sparse panel diagonally from above.
When the beams need to be replaced, loosen the screws from one beam at a time and replace it.
Screw the sparse panel diagonally in the same way, but into the new beam (shim with masonite if necessary).
Start replacing the next beam.
Repeat until all are replaced.
Angle brackets would work in that case, it will be single gypsum and just no additional load on the ceiling. It could also work with nail straps, but then there will be a twisting load that wants to make the sparse panel rotate around its own axis.JOW said:
Not that I want to question, but why don't you replace the floor beams beforehand? It feels like you will end up doing double work. Also, plastering and painting the drywall with the risk of it cracking doesn't seem entirely okay either.
Now, I don't know how it looks, but one alternative could be to install new floor beams between the old ones, which you then attach the ceiling to, and then when you demolish the upper floor, you can just remove the old ones.
Now, I don't know how it looks, but one alternative could be to install new floor beams between the old ones, which you then attach the ceiling to, and then when you demolish the upper floor, you can just remove the old ones.
It will be a whole lot of angle irons, just use angled screws.
That's my assessment.
Use a big box of chipboard screws 4.2x55 or whatever they usually are. PH2 bits.
Count two screws per board and beam.
If you're worried that it's not enough, count 4 screws per board and beam. Put two from each side.
That's my assessment.
Use a big box of chipboard screws 4.2x55 or whatever they usually are. PH2 bits.
Count two screws per board and beam.
If you're worried that it's not enough, count 4 screws per board and beam. Put two from each side.