New studs for ceiling, carport storage

[Infan]

Hello,

I have a carport with an attached shed measuring 2.4m x 6m where I would like to add insulation to the ceiling. However, there is only one ceiling joist to attach to currently, as the other two rest on the shed's wall plates on the long sides. Can I splice joists that I attach to the wall plates and then screw furring strips into these? What should the dimensions of the joists be in that case? I'm not planning on a complex ceiling, just a layer of drywall or similar.

Are there any better ways to do this?

I'm attaching a picture that I hope illustrates my problem. The red lines are the ceiling joists, and the blue ones are the joists I'm considering.

 

[justusandersson]

I am having a bit of trouble understanding how the carport is built. Could you also draw a section?

 

[Stensson11]

Hi,

I have a carport with an adjoining storage room measuring 2.4m x 6m where I would like to install insulation in the ceiling. However, there is only one roof truss to attach to now, as the other two rest on the storage room's wall plate on the long sides. Can I splice joists that I attach to the wall plates and then screw battens into these? What dimension should the joists be in that case? I'm not thinking of anything complicated for the ceiling, just a layer of plasterboard or similar.

Are there any other better ways to do it?

Attached is a picture that I hope illustrates my problem. The red lines are the roof trusses, and the blue ones are the joists I was considering.

The dimension doesn't matter, but you must be able to attach the battens to it. A common way to do it is instead to place a 45x95 on the "plate" on the wall plate. Which is best depends on how close the roof truss is.

 

[Infan]

I'm having a bit of trouble understanding how the carport is built. Could you draw up a section as well?

Here comes a better picture. Existing trusses are still red, any new ones are blue, and the sparse paneling is green.

 

[Infan]

The dimension doesn't matter, but you need to be able to attach the battens to it. A common way to do it is to place a 45x95 on the "plate" on the wall plate. Which is best depends on how close the truss is.

That sounds like a smart solution. If I understand you correctly, you place half of the piece on the wall plate and secure it, while the other half rests in the air where you attach the sparse paneling?

 

[Stensson11]

It sounded like a smart solution. If I understand you correctly, you place half of the rule on the beam and attach it, while the other half rests in the air where you attach the sparse panel?

Exactly. Just secure it properly so it doesn't get pushed up.

 

[justusandersson]

One way to solve the problem is to mount 45x70 mm studs across and between the rafters so that they have the same bottom edge as the rafters. The c/c distance between these studs depends on the material you plan to use as the ceiling. Thin panel (16-17 mm) requires 600 mm. Thicker panel (22-23 mm) should manage 1200 mm.