During the process, our client decided to change the project. He wanted us to make the insulation with the Penoplex material instead of the mineral wool (he listened to some guy). We tried to explain to him that Penoplex boards, despite the lower thermal conductivity, could change its size depending on the temperature. There could be cracks along the joints. The customer didn’t want to change his decision. Then I added a clause to the contract changing the warranty policy. I necessarily guaranteed cracks on the facade.
Two weeks later, the customer called the contactor and complained about the cracks on the facade. The client was embarrassed to contact me.
At least, we fulfilled our warranty obligations regarding this clause.