distance between rafters?

[micke berglund]

Hello, I'm unable to find the dimensions for the following in the tables I have:

The trusses will be placed with center-to-center spacing of 1200mm, but it seems like I should have something in between so I can nail battens every 600mm. So every other truss should have every other 45x195mm (?) stud, the question now is what dimensions should that stud have?

Above it will be a cold attic that cannot be furnished. The span is 5300mm.

/ Micke

 

[FredrikR]

Are you thinking about the ceiling or the råspont?
cc1200 should work fine for both.
Nail 28x60/70 as sparse for the ceiling and use 22mm råspont.

 

[kanis]

Isn't cc=1200 enough? The sparse panel is mounted perpendicular to the bottom chord of the truss.

 

[prototypen]

If one is worried, a 45x45 can be nailed between the chairs to bind the sparse panel together.

Protte

 

[micke berglund]

It's on the inside I'm thinking, what's going to be the ceiling.

Is it enough to nail spacing battens (28x70mm) with cc300 mm in the trusses that are at cc1200, and then screw the drywall onto that?

Won't the drywall sag then? So it becomes wavy?

 

[Gabbe1]

I'm thinking about the inside, what will become the ceiling.

Is it enough to nail sparse paneling (28x70mm) with cc300 mm to the roof trusses that are cc1200, and then screw on gypsum?

Won't the gypsum hang down and become wavy?

I would prefer to first layer rough sawn wood so that if an accident happens and someone steps wrong up in the attic, you don't have a foot going straight through the gypsum ceiling.

 

[FredrikR]

It is on the inside I am thinking, what becomes the ceiling.

Is it enough to nail spaced panel (28x70mm) with cc300 mm on the rafters that are with cc1200, and then screw plasterboard on that?

The plaster doesn't sag then? so it becomes wavy?

No, it shouldn't sag if you nail 28x70 on cc300.

 

[prototypen]

I prefer to put plywood on the ceiling as well, then you can screw things up anywhere you like.

Protte

 

[micke berglund]

thank you for all the answers, it was nice to avoid both cost and labor!

 

[Mikael johannesson]

thanks for all the replies, it was nice to avoid both costs and labor!

How did the result turn out, did the plaster bend? I'm in the same situation as you now with cc120 and am wondering if it will be enough