ᐅ Roof Framework: Is Warping of Roof Rafters Normal?

Created on: 16 Nov 2022 17:39
H
HausbauSN
Hello forum community,

Could you please take a look at the pictures of our roof structure?

To us, it doesn’t look good at all.

The rafters show significant warping and are far from flush at the ridge area.

This also causes the purlins, which according to the structural engineer should be nailed, to not sit properly against the rafters. In some places, the gaps are as wide as a hand.

Additionally, some nails have not been fully driven in.

Our question is whether this could still be within an acceptable tolerance or if it should already be considered professionally incorrect work?

Thanks in advance!

Holz-Dachstuhl-Balken kreuzweise verbunden vor blauem Himmel; Aufnahme von unten


Holzgerüst aus Balken im Bau, sichtbar gegen blauen Himmel.


Holzständerwerk aus Balken vor blauem Himmel.


Holzrahmen-Konstruktion aus Balken und Stützen, Blick nach oben auf Bauwerk


Holz-Balken-Konstruktion mit Kreuzverbindung vor blauem Himmel
Malle Zwabber17 Nov 2022 09:32
Hello,
This might not be much help, but for my roof frame, everything was screwed together. Unfortunately, I can’t say how necessary that was. It might have just been because the whole structure was a bit more complex.

Wooden roof frame on construction pit, scaffolding around; construction vehicle in the background.

Wooden roof frame of a new build with scaffolding, houses in the background.

Wooden roof frame in shell construction with rafters, beams, and floorboards
kati133717 Nov 2022 10:00
I believe they used both nails and screws on our new roof. It's called a "nail truss" after all, so I guess that's because nails are used to connect it? 😀
I'm not an expert in roofing, but I would also find the image you showed disturbing. It just looks crooked, you can see that with the naked eye.
What does your site manager say about it?
T
Tassimat
17 Nov 2022 11:46
I am wondering whether it was installed crookedly from the start or if the wood has shifted over time due to weather or other factors.