Double glazing at KFW70???

When does it usually take place

The prerequisite for this, however, is that KFW 70 is still achieved, otherwise you will have a problem later...

What exactly do you mean by later? Does KFW announce inspections, do they occur sporadically at random, or must all documents always be submitted afterwards?

Hello,

What exactly do you mean by later? Does the KFW announce inspections in advance, are they carried out sporadically at random, or do all documents always have to be submitted afterwards?

No idea, I have nothing to do with the KFW. What I meant is, if you use KFW funds, you have to meet the conditions. Otherwise, it's fraud. Whether they check that, I don't know. But I could imagine that there might be inquiries. Otherwise, anyone could just define their house as a KfW 40 plus house.

But it could well be that the house still meets the Kfw 70 conditions even with the worse windows.

Now the crucial question is how you build: really through a genuine property developer (house and land from one source and only transfer ownership after completion) or via a general contractor (a general contractor builds for you on your land and you are the client with all rights and obligations).

In the first case, the property developer must guarantee that the KFW conditions are met, in the second case the builder, i.e. YOU.

Your approach against the contractor also depends on that. A GC must deliver what is in the contract, i.e. triple glazing with a U-value of 0.7. How binding the construction description is with a property developer, I don't know. Because with them you only buy "a piece of finished house with land" and have only limited influence on the construction method.

The KFW applications have to be submitted before the first groundbreaking, right? So you can't change them anymore? Then you would definitely have to replace the windows, otherwise your KFW financing would be void.

Best regards,

Andreas

One more thing, for me, triple glazing would already be an absolute, non-negotiable must-have for sound insulation reasons. In other words, I would have them replaced.

Apart from that, an entire window with a Ug of 0.7 does not have to be better than one with a Ug of 0.8, because the frame plays a crucial role in the calculation of the Uw.

VG

K1300S

Hi,

Aside from that, an entire window with a Ug of 0.7 cannot be better than one with a Ug of 0.8, because the frame plays a decisive role in the calculation of the Uw.

everything completely correct. But if I contract triple glazing with UG 0.7, I won’t allow double glazing with UG 0.8 in the house. If I order a car in blue, I also want a blue one and not a green one. Even if the green one undoubtedly drives just as well!

Best regards,

Andreas

I completely agree with you. It should only be pointed out that the general contractor can also "take revenge" in this way if he installs the correct glass but uses a cheap frame instead.