I will be hanging up two large panels (more precisely - they are bass absorbers in the back part of my home theater room) that should be able to slide sideways on hang rollers mounted in a track. Just like any sliding door. There are two panels, each weighing approximately 30 kg, and the track/hang rollers I bought from specialbeslag.se should hold 80 kg. Normally, each panel will also hang on its own track, so you can see it as each track bearing the load from one panel.
My ceiling consists of OSB + gypsum, behind that there is a batten that is 27 mm deep. Unfortunately, the batten runs the "wrong way" so the chance that the track ends up directly under a batten is very small. In other words, the attachment will be in the OSB board.
The track has no pre-drilled holes, so I will drill the holes as closely as needed myself. What I wonder is how closely I should drill the holes in the track, and which screws I should use to fasten the track? Can I use screws only for the OSB board, or do I need metal anchors or similar?
My ceiling consists of OSB + gypsum, behind that there is a batten that is 27 mm deep. Unfortunately, the batten runs the "wrong way" so the chance that the track ends up directly under a batten is very small. In other words, the attachment will be in the OSB board.
The track has no pre-drilled holes, so I will drill the holes as closely as needed myself. What I wonder is how closely I should drill the holes in the track, and which screws I should use to fasten the track? Can I use screws only for the OSB board, or do I need metal anchors or similar?
Here is an image that describes it a little better, the rail/panels should be placed right in front of the CD/film shelf.
http://www.minhembio.com/bilder/hq/?pic_id=382720.jpg
(I didn't link the image in the post because it is quite large)
http://www.minhembio.com/bilder/hq/?pic_id=382720.jpg
(I didn't link the image in the post because it is quite large)
Okay, so one should use an anchor then, not screw directly into the OSB?
Is it 11mm OSB? I don't know if the expander adds anything significant, but that's just what I think. I remember seeing some discussion that in OSB you have a tensile load of 100kg per screw. As long as the OSB is properly fixed to the studs, I find it hard to believe it would come loose if you attach the rail with about 8 wood screws directly into the OSB.
Yep, it's 11 mm OSB. The OSB is firmly screwed into the battening, I know, because I did it myself. 
If it can handle a tensile load of 100 kg per screw, it should be smooth sailing since I have a load of around 30 kg per 1.5-meter rail, and I'll be screwing the rail with one screw every 20-30 cm in that case. It would be really nice to avoid making crater-sized holes for metal expanders...
If it can handle a tensile load of 100 kg per screw, it should be smooth sailing since I have a load of around 30 kg per 1.5-meter rail, and I'll be screwing the rail with one screw every 20-30 cm in that case. It would be really nice to avoid making crater-sized holes for metal expanders...
Thank you, I will do that. I have tried searching before, though only on Google, not on the forum. But Google usually finds posts on Byggahus, I thought. Maybe incorrectly.
I have tried searching before, though only on Google, not on the forum. But Google usually finds posts on Byggahus, I thought. Maybe incorrectly. According to Beijer, OSB has a tensile strength of 167 kg:
http://www.beijerbygg.se/templates/BB_ByggradListItem.aspx?id=52659
It seems extremely unnecessary to use metal expanders, in other words.
http://www.beijerbygg.se/templates/BB_ByggradListItem.aspx?id=52659
It seems extremely unnecessary to use metal expanders, in other words.