Hello
I'm working on fixing the interior of my garage and one question I have is how long the screws need to be to attach 70*45 battens to the ceiling. The battens will be placed edgewise, so I will be screwing through the side that is 70mm. I have a low-sloped roof, about 3 cm per meter.
The roof is constructed as follows: roofing felt, tongue and groove, 45*45 (ventilation gap), 220*45 then I will place 70*45 under that.
I will insulate the entire 220*45 battens and then plastic, then I will place 70*45 and insulate it as well. Then there will be OSB and ceiling plasterboard.
Off topic
The walls are constructed with 145*45 which will then have a 45*45, then OSB and plasterboard.
I'm working on fixing the interior of my garage and one question I have is how long the screws need to be to attach 70*45 battens to the ceiling. The battens will be placed edgewise, so I will be screwing through the side that is 70mm. I have a low-sloped roof, about 3 cm per meter.
The roof is constructed as follows: roofing felt, tongue and groove, 45*45 (ventilation gap), 220*45 then I will place 70*45 under that.
I will insulate the entire 220*45 battens and then plastic, then I will place 70*45 and insulate it as well. Then there will be OSB and ceiling plasterboard.
Off topic
The walls are constructed with 145*45 which will then have a 45*45, then OSB and plasterboard.You may want to pre-drill the 70-reglarna to prevent them from splitting. I would have used a 90 or 100 long.
Ah, I was thinking 70 high but then the screw was calculated based on a 45 regel.... of course, you should have about 50 mm into the next regel to make it hold well.
Ah, I was thinking 70 high but then the screw was calculated based on a 45 regel.... of course, you should have about 50 mm into the next regel to make it hold well.
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At 90, it's only 20mm that keeps the studs in place, I had thought I would need screws around 140-150 mm long.
Pre-drilling can be good, but maybe unnecessary since "real" screws have self-drilling tips.
But longer screws! At least 120 mm. The roof will be quite heavy.
But longer screws! At least 120 mm. The roof will be quite heavy.
Thanks for the tips.
It will be at least 120 long screws with self-drilling tips.
It will be at least 120 long screws with self-drilling tips.
Good choice, I have just built an entire house with walls using 70x45 cross-braced upright studs, both on the outside and inside.
All are screwed with Biltema's 6x120mm torx screws, the screws are driven so that the heads are countersunk about 10mm into the stud. Not a single stud has cracked.
All are screwed with Biltema's 6x120mm torx screws, the screws are driven so that the heads are countersunk about 10mm into the stud. Not a single stud has cracked.
I have ordered screws from Wurth and got 6*140 long ones to attach the 45*70 studs to the ceiling and 5*100 to attach the 45*45 to the walls. Then, I'll use regular plywood screws to attach OSB on both walls and ceiling, and regular drywall screws for the gypsum.
It will surely hold!
A question: Why are you going to put OSB on the ceiling?
A question: Why are you going to put OSB on the ceiling?
The garage is connected to the house, so we had to have double plasterboard, but I asked the construction manager if we could have OSB and plasterboard instead, and according to him, a recent test showed that it was just as safe as double plasterboard. Another advantage is that you can screw things up anywhere without problems, sure you can't hang anything too heavy, but you can at least have heavier things than if it was plasterboard.
Yes exactly, OSB behind drywall provides almost the same fire rating as double drywall. Can therefore often replace double drywall. A bit more expensive, but convenient when fluorescent fixtures, etc. need to be mounted.
It was one of my first thoughts with osb.
OK, thanks!
Didn’t think about the fire rating, just that usually you don’t hang such heavy things from the ceiling
Didn’t think about the fire rating, just that usually you don’t hang such heavy things from the ceiling
In a previous episode of "Arga snickaren," the homeowner received quite a reprimand when it turned out he had spent time installing OSB on the ceiling. This was in the house, though; I can buy your argument when it comes to a garage.
Yes Voima, what can one say?
Overkill is what comes to mind for me at least.
But OK, if TS wants (and can afford to) build a new Fort Knox, then why not.
Overkill is what comes to mind for me at least.
But OK, if TS wants (and can afford to) build a new Fort Knox, then why not.