ᐅ How do you repair drill holes in an exterior wall?

Hello

Our facade is constructed as follows:

15cm (6 inches) sand-lime brick
19cm (7.5 inches) external thermal insulation composite system (ETICS)
Exterior render

A scaffold was set up at our building for photovoltaic installation.

How are the drill holes properly sealed afterwards to prevent thermal bridging or other issues?

I have the original render and paint and will provide them.

Is there a specific type of foam, acrylic, or something else used for this?

There are special plugs available for this. Alternatively, you can use pre-compressed, round sealing tape (then a cover cap with sealant or, alternatively, plaster with a finishing coat).

The surface will definitely be plastered and then painted over so that nothing is visible afterwards.

The question is how to properly fill the cavity in the external thermal insulation composite system (ETICS) and in the calcium silicate block to prevent any thermal bridges or similar issues.

FrankChief schrieb:

It should definitely be plastered over afterwards and then painted so that nothing is visible in the end.

The question is just how to professionally fill the gap in the ETICS insulation and in the sand-lime brickwork?
So that no thermal bridge or similar occurs.

Did you not read my answer?

These things are usually about 4cm (1.5 inches) long. You don’t use more than that. Behind it, there is a still air layer, so no thermal bridge forms.
This is standard practice — but of course, you can also do it yourself.

P.S. Why are you doing this yourself? Isn’t it included in the scope of work for the ETICS contractor?

Oh, sorry.

I thought you use the plug if you don’t plaster the hole.

So, you put the plug in, then apply plaster, let it dry, and then dab paint on, and that’s it, right?

I’m not doing it myself, they do it, but I just wanted to know the correct procedure so they don’t cut corners or do any shoddy work.

FrankChief schrieb:

So, just insert the filler, then apply the plaster, let it dry, dab the paint on, and that’s it, right?

Yep. That’s exactly how it’s done. If the guys do a proper job, you won’t see any traces afterwards.