ᐅ Experiences with Exterior Insulation and Finish Systems (EIFS) from Different Manufacturers?

nordanney schrieb:

First, talk directly with the company and the system manufacturer.

Will the company still be around in 15 years? That wouldn’t be a good compromise for me.

Honestly? This system stuff is just money-making at the end of the day. If properly glued and doweled, it really doesn’t matter what was used. The problems usually come from poor workmanship, not bad materials.

Are you speaking from experience? Do you work in this field?

Zizou_Bh schrieb:

Are you speaking from experience? Do you work in this field?

Experience. I’m “only” working in the financing sector and mainly dealt with property developers and project managers for larger projects.

For my own renovations, I don’t worry about those details either – and so far, I’ve never had any issues whether I used mortar from Sakret, Sto, or even Knauf. The rule is simply not to mix products – although technically, you can.
And if you think about the fact that different system manufacturers obtain insulation materials of certain types from the same supplier, it becomes even more confusing that for Sto insulation you must only use Sto mortar, while the exact same panel (practically coming off the same production line) must be fixed exclusively with Knauf mortar when it’s from Knauf.

But privately, even with my own labor, liability isn’t an issue.

Have you by any chance talked to the installer or the system manufacturer’s sales representative yet?

nordanney schrieb:

Experience. I work "only" in the financing sector and mostly handled property developers and project managers for larger projects.

For my own renovations, I don’t worry about such things either – and so far I’ve never had any issues whether I used mortar from Sakret, Sto, or even Knauf. The rule is that you’re not supposed to mix – but it’s possible to do so.
And if you consider that some insulation manufacturers get their insulation materials from the same supplier for certain types of insulation, it gets even more contradictory that when using Sto insulation, you are only allowed to use Sto mortar, even though the exact same board (almost coming off the same production line) from Knauf must only be installed with Knauf mortar.

But privately, even with DIY work, I don’t worry about liability issues.

Have you talked to the installer or the sales representative of the system manufacturer yet?

Hello, according to the site manager, this should not have happened. The tender specifies that everything must come from a single system. However, functionally, he does not see a problem since high-quality materials were used. Exactly as you say, it’s the same stuff just packaged differently. The trade contractor offers an extended warranty.
For me, it remains unclear whether this approval is legally required or mandatory. What are the consequences if the approval is not in place?

Zizou_Bh schrieb:

What are the consequences if there is no approval?

The external thermal insulation composite system (ETICS) is defective and requires either demolition or repair with individual approval from the relevant building authority.

Regarding the defect:

As the name suggests, these systems can only be tested as complete systems to determine their construction-related properties. This means that the approval applies solely to the exact test setup used by the testing institute. Typically, the applicant for approval is the manufacturer of the insulation material, who purchases the fastening materials separately. Accordingly, the approval must specify this exact combination, ensuring that the insulation manufacturer is required to continue purchasing the fastening materials from the same supplier. The supplier usually provides the materials as "white label," branded by the insulation manufacturer and assigned a part number within their product range. The contractor understands the connection behind this and often receives the OEM material from their wholesaler at a lower price or only counts it toward volume discounts in this way. As a result, they regularly purchase essentially the same product but with what might appear to be an "incorrect" part number when scrutinized in detail. It is important to emphasize that this is the norm, not just a frequent occurrence. Formally, this shifts the warranty responsibility away from the "system" manufacturer to the contractor, who then accepts it themselves (placing their clients in a legal gray area). I have never heard of a building authority demolishing an "illegal construction" solely because the panels were installed with allegedly "incorrect" insulation fixings. However, I do not follow the so-called newspapers that are popular only for their entertainment section.

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11ant schrieb:

I have never heard of a building authority ordering the demolition of an unauthorized structure just because the panels were fixed with (supposedly) the "wrong" kind of drive-in fixing pins.

No plaintiff, no judge. I have also mentioned that this issue would not personally bother me much.