ᐅ Thermal insulation anchors in ETICS with 100 mm Neopor insulation

Hello,

I am currently in the shell construction phase, using 100mm (4 inches) STO Neopor insulation. Since I am building abroad, everything is a bit more complicated. Because I am exposed to strong coastal winds, STO recommends using anchors. My concern with anchoring—as you probably know—is that it might become visible on the facade later.

STO has a new spiral anchor available at a unit price of 80 cents. For 1,600 pieces, that gets quite expensive.

I’ve done some research and wanted to ask if there is a standard anchor that won’t show through the reinforcement and plaster later on. I found something online for about a third of the price that can be recessed, with a disc placed on top.

Does anyone have practical experience with this?

What do you think?

Thanks!!!

Hello Topanga,
I have used these recessed thermal anchors on my two dormers, which were insulated last year.

The anchors themselves (where the screws go in) get additional "plugs," and then the washer is placed on top. For me, that was the only acceptable type of anchor at the time.
I don’t have any long-term experience with them yet, but I’m optimistic that this approach significantly reduces the risk of the anchors becoming visibly recessed over time.
At the moment, the dormers still look as good as on day one =).
This year, I will be treating the facade using the same method.

Good luck with your project!

The appearance is caused by the thermal bridge. I don’t think that reinforcement or plaster will change that. You need the appropriate anchors with the washer on top.

Alex85,
it was never claimed that the issue was caused by the plaster 🙂
His question was specifically about the anchors.
I share the same opinion – hopefully the facade will stay in good condition as well.