ᐅ Thermal Bridge Repair in New Construction

Created on: 23 Mar 2021 13:05
K
Klärbär
Hello everyone,

Since quite a few things have gone wrong with our new build, I am seeking advice and information regarding the installation of insulation and waterproofing.

After a thermal bridge was detected at an exterior corner, insulation boards were attached on the outside to fix this issue. In my opinion, the work was not done professionally because the boards and plaster protrude by 3-4mm (1/8–3/16 inch) and the facade is not flush.
Please see the attached photos. By the way, the building is less than six months old and still under warranty.

My question is: Is such a repair method even appropriate for a new construction? Shouldn’t the facade be opened up to address the thermal bridge directly within the wall?

If this type of repair is acceptable, I would like to know if there are any tolerances when insulating with external insulation boards. Visually, it just looks terrible.

Exterior wall with exposed cable bundle and loose wire.

White, roughly textured ceiling at top and gray wall below, separated by a horizontal edge.

White building facade with slanted overhang, window at lower left, blue sky at right.


Regards
seat8824 Mar 2021 09:19
I thought you were the client...
K
Klärbär
24 Mar 2021 10:37
seat88 schrieb:

I thought you were the builder...

We purchased the apartment from the developer before even the foundation was excavated and, of course, have been involved throughout the construction process. Sorry if it came across otherwise.
K
Klärbär
27 Mar 2021 15:02
We have now had the appointment with the contractors. They offered me two options to fix the issue: either a credit or a metal sheet that is 30cm (12 inches) wide, which would place the awning much too high. I believe there must be another way to resolve this. I have contacted another contractor to take a look at the whole situation. How would you approach this? I think a visual defect should not simply be covered up with a metal sheet, as that is not a professional solution.
H
hampshire
27 Mar 2021 15:40
Klärbär schrieb:

We bought the apartment from the developer before even the basement was excavated and have, of course, closely followed the construction process. Sorry if it seemed otherwise.

Are you the contracting party with the tradespeople, or is that the developer from whom you bought the apartment?
This would clarify against whom you can make a claim and how to assess the offer from the tradesperson.
K
Klärbär
27 Mar 2021 16:04
hampshire schrieb:

Are you the contracting party with the tradespeople, or is that the property owner from whom you purchased an apartment? This would clarify against whom you can assert a claim and how to evaluate the tradesperson’s offer.

The contracting party is the property owner. He has commissioned the tradespeople to carry out the correction. I can assert my claim against the property owner. I am interested to know what happens if the second tradesperson says the correction was not carried out properly. Does a third-party expert need to be appointed to clarify the situation?
B
BobRoss
27 Mar 2021 16:54
From the pictures, it is not clear to me that the insulation boards are protruding or that the surface is uneven. I see a joint line or a height difference in the plaster.

I wouldn’t find that aesthetically pleasing either. Making a retrofit plaster finish 100% seamless is actually quite difficult. But it should be possible to do better. Was the underside of the loggia not insulated before?

A side note: In reveal areas of an external thermal insulation composite system (ETICS), reinforcement mesh is usually included under the plaster to reduce cracking (see “ETICS installation guidelines for reveals”). If this was applied during the retrofit insulation, then the plaster transition should not look like it does currently.