ᐅ Roof pitch 12 degrees – no waterproofing planned

Created on: 22 May 2013 07:03
A
ato
A
ato
22 May 2013 07:03
Hello!
Here’s the situation: The construction contract is signed, the building permit / planning permission has been granted, and now comes the first change...
I received an email today from my general contractor / GC. The roofer has informed him that the roof cannot be built as planned. The plan was a mono-pitched roof with a 12-degree slope on the east side. This is also documented in the building application, the drawings, etc. Technically, this shouldn’t be a big problem, right? A watertight underlay should be possible, shouldn’t it? The GC now says this will cost more.
Is the GC allowed to charge more money after the offer was made and the contract signed? So, did he technically offer me an incorrect roof or not? I will talk to him again to see if we can reach some kind of agreement. But changing everything again and making the roof steeper is out of the question for me.

Question to the forum:
A mono-pitched roof with a 12-degree slope and a watertight finish is technically feasible, right? That is shown in the drawings and building application, and the offer is based on that.

I cannot tell from my offer whether a weatherproof or watertight underlay was included. But according to the recognized rules of construction, that should have been clear from the start since the slope of 12 degrees is specified in the drawings, right?

Can anyone estimate how much the additional costs (e.g., materials and labor) for a watertight finish might be? The roof is a mono-pitched roof with external insulation, measuring 5.88 x 12.86 meters (19.3 x 42.2 feet).

I’m not a big fan of such surprises and am quite annoyed with the GC right now...
S
speer
22 May 2013 08:25
Good morning,
I believe the general contractor (GC) had access to the local building regulations provided by the municipality or city. The GC submits a proposal that complies with these regulations and ensures the feasibility of the project. Once the proposal is signed, it becomes a contract that both parties are obliged to follow. So, I would say it’s tough luck for the GC. The GC must strictly adhere to what is stated in the contract. Verbal agreements have no legal effect! If the contract does not mention a waterproof underlay, it is not part of the contractual obligations!
A
ato
22 May 2013 09:35
What nonsense! So I can just let the roof flood because the contract doesn’t say it has to be watertight? That can’t be true!
B
Bauexperte
22 May 2013 20:12
Hello,
ato schrieb:

Is a waterproof underlay possible?
What exactly does that mean?

Regards, Bauexperte