ᐅ Insulation damaged by excavation work. Serious issue?

Hello everyone,

We are building our single-family house through a general contractor. Today, I noticed that the perimeter insulation was damaged during the excavation work (see attachment 1). Is this a serious issue?

Additionally, a studded membrane layer was installed on top of the perimeter insulation. It was attached to the perimeter insulation at certain points. Is this correct? As a result, many stones fell between the perimeter insulation and the studded membrane during the excavation work. Is this a problem?

Thank you very much.

It doesn’t matter that it was damaged; why should that be a concern? Stones should not fall behind the vapor barrier/foil. That is problematic!

Bookstar schrieb:

It doesn’t matter that it was damaged; why should that be an issue? Stones should not fall behind the membrane. That is problematic!

Now the soil will be in direct contact with the perimeter insulation. If it is "intact," then that wouldn’t be the case.

The dimpled membrane is intended to protect the perimeter insulation from mechanical damage caused by soil and stones. If stones fall behind it, this purpose is compromised.

lastdrop schrieb:

The dimpled membrane is supposed to protect the perimeter insulation from mechanical damage caused by soil and stones. If stones fall behind it now, the whole purpose is defeated.

Okay, understood. The question now is how serious this is. What consequences should I expect?

gamer456 schrieb:

Okay, understood. The question now is, how serious is this? What consequences should I expect?

If there is a large stone in between that compresses the insulation, its effectiveness will be lost.
The correct approach would be to remove the dimpled membrane once and inspect, but probably no one will agree to that.