Is this built correctly?

[chrille112]

I think I understand what you mean, but I'm not sure if I can manage this Considering whether I should buy ready-made trusses for the mansard roof after all, maybe it's stupid to be stingy? Then you avoid the problem with posts under the glue-laminated beam as well....

Does anyone other than Farzan think it's ugly to mix different roof types?

What do you think?

Estwing: can't you come and fix that... I'll buy half a pig and a few cases of beer... :-D

 

[estwing]

I think I understand what you mean, but heck if I can manage this Considering whether I should buy ready-made roof trusses for a mansard roof after all, maybe it's silly to be cheap? Then you avoid the problem with posts under the glulam beam as well....

Does anyone other than Farzan think it's ugly to mix different roof types?

What do you think?

Estwing: can't you come and fix that... I'll buy half a pig and a few cases of beer... :-D

hehe yup I'm coming:wow:
well. you should have the glulam I think.
you should make a nice shed roof on this extension, nice.

no I don't think you should mix different roof types on this extension that is a bit larger than a regular dormer, then you could have had a gabled roof.

 

[chrille112]

But I have a regular saddle roof on the main building, so I should have it on this one too, right? Or did I misunderstand you now?

The house is from 1921, so it's a bit oddly built... the roof trusses consist of horizontal logs so it might be tricky to create a transfer between them. Do you think it would work to put a support under the transfer down towards the "floor"?

 

[estwing]

aha, thought the picture of the construction was your house???

ok are the logs placed that way?
yes, but then you just offset in the other direction...

but in your case, I wouldn't do a mansard roof, but rather a gable roof!

regards
estwing

 

[chrille112]

No, unfortunately it is not my house. Just wondered if the construction was OK, if so I thought I might use it too

Is it for the appearance that you think I should go with a gable roof, or is there another reason?

 

[byggorm]

hello!
I have to chime in with a little comment here about the nice/ugly aspect of mixed roof styles.
So, I think the reason why gable and mansard don't "go together" according to some is because the mansard roof takes up more space in the field of vision and therefore kind of dominates the house a little bit... the base building with the gable roof might seem diminished and a little sidelined compared to the others, if you think about such things... but I think the mixed styles are pretty cool, it gives more personality to the house. I would have chosen to do so myself, especially since the mansard roof provides more space inside, as the walls don't slope inward as much and steal space.

to be honest, I know nothing about roofs. But I can see how things Look

 

[Farzan]

I think Byggorm hit the point there... it's not the mix of styles itself that bothers me but the examples I haven't liked have been quite large extensions with mansard roofs that have come to dominate the house. But if the proportions are like in the picture above, I don't think it's that bad.

 

[chrille112]

So do you think my model above is really ugly?

Correct me if I'm wrong, but aren't these the only two solutions you have with a gabled roof:
- Set the trusses directly on the extension, so that the lower chords of the truss become the floor. Then you lose a lot of space in the sloping walls (at least a meter on each side?)

- Set the trusses at normal height. Then the dormer becomes very high, probably higher than the main building.

Then the only option left is a ridge beam with glulam if you want a gabled roof?

 

[estwing]

I made this model, I think it looks pretty good Or what do you mean? I previously made a version with a regular saddle roof, but then it becomes a bit too "birdhouse" in my opinion..?

By the way, I just realized when I see the model that since the current roof starts so high up, you have to have elevated wall plates anyway, otherwise the new roof will sit much lower than the existing one?

So, this sketch you made doesn't have good proportions (is that how you spell it?:wow::wow::wow. The first sloped roof section should be as large as the one above, and if you do that, you'll end up with your mansard lower than your existing roof... On your drawing (sorry), it feels like the roof is being squeezed if you understand? The sides ARE too short. But everyone has different tastes when it comes to a mansard. This is my opinion. Best regards, estwing who loves mansard roofs because the space becomes really great!!!

 

[alma6567]

hi Go to the Moelven website where you can download a program for the sizing of glulam beams/trusses
think your picture looks quite okay...

 

[chrille112]

I have decided to go with a mansard roof, even though we have a regular gable roof on the main building, partly because it provides a tremendous amount of extra space and it's attractive.

I have sent an inquiry for a roof truss with elevated wall height. If it's not too expensive, I think we'll choose that instead of the vaulted ceiling because I feel uncertain about the construction.

I was up in the attic today and can confirm that we have a vaulted ceiling there. There is a beam at the ridge and one on each side, about 1.5 m from the eaves.

We don't plan for the vaulted ceiling to carry inside, it's just the connection to the gable roof, and on the inside everything looks just like today.

Do you think about the integration between the gable roof and the mansard roof, where I'll have to extend the trusses to build against the sheathing on the gable roof (like a dormer). Do you think I'll need any reinforcement in the attic for the ridge beam that comes in, or is it sufficient to just lean it against the sheathing?

This turned into a long ramble, I hope you have the patience to read and understand what I mean... ;-)

 

[Snickar-Urban]

Have sent an inquiry for a truss with a raised wall plate.

Interesting. I haven't seen such a truss construction before. There will be many parts that need to be connected. When you get a response, you can show us how it will look.

 

[estwing]

I've decided to go for a mansard roof, even though we have a regular gable roof on the main building, partly because you gain an incredible amount of space with it and it's aesthetically pleasing.

I've sent off a request for trusses with increased wall height. If it's not too expensive, I think we'll choose that instead of the vaulted ceiling because I feel unsure about the construction.

I was up in the attic today and can confirm that we have a vaulted ceiling there. There is a beam at the ridge and one on each side, about 1.5 meters from the eaves.

So, we're not planning for the vaulted ceiling to carry through to the inside, it's just a connection with the gable roof, and on the inside, everything will look just as it does today.

What do you think about the connection between the gable roof and the mansard roof? There, I would have to extend the trusses to build against the roof board on the gable roof (like a dormer). Do you think I need any reinforcement in the attic for the ridge beam that comes in, or will it hold just by leaning it against the roof board?

This ended up being a long ramble, hope you manage to read it and understand what I mean... ;-)

no, you should not place the laminated timber just on the roof board.
read the previous posts where I described...

regards
estwing

 

[chrille112]

I was not planning to use glulam but something like 2"8 between the nearest rafter and the roof. Can it be 2-3 meters?

Is glulam needed for such a short piece?

 

[estwing]

ok. why not then take something all the way?