ᐅ Mistakes Drilling into Sand-Lime Brick up to Exterior Insulation and Finish Systems (EIFS)

Created on: 18 Jun 2016 14:54
K
kevchock
Hello,
first of all: I am a construction layman. Here is my situation:
- The picture shows the bathroom in the attic

Bathroom shell with toilet frame, pipes, and green wall

- The wall is made of calcium silicate bricks
- In the center of the picture there is a mistaken drill hole that reaches all the way to the exterior-applied rigid foam insulation system (ETICS / external thermal insulation composite system), but does not damage it (visible through the hole)
- In front of this is the vanity stud wall made of drywall panels
- The drywall stud wall will be filled with insulation wool

Now the question:
Does this drill hole, if left unfilled, create a thermal bridge or is it unproblematic since the external insulation system is still intact?
- Would the airtightness then be compromised?
Thanks to everyone! 😉
L
Legurit
18 Jun 2016 22:31
I agree as well. Although in our case, with a pre-wall installation that meets the exterior masonry from the side, this was not done either – but in your case, if I understand correctly, it is even an area of several square meters.
K
kevchock
19 Jun 2016 00:14
okay, thanks to all of you, I will pay attention to that and speak with the workers on Monday.

one question: I still have a blower door test scheduled. Won’t it be noticed during that test anyway?

thanks
T
toxicmolotof
19 Jun 2016 00:43
And then what? Do you think they will tear down the (tiled, fully installed) wall again?

Definitely not.
Y
ypg
19 Jun 2016 01:20
toxicmolotow schrieb:
And then what? Do you think they will break open the (tiled, fully installed) wall again?

Definitely not.

That is why the Blower Door Test is performed before the walls are covered.
Mycraft19 Jun 2016 01:42
If the contractor actually has time... with the current construction boom, it often happens that people are already living in the house before the test is carried out...
S
Sebastian79
19 Jun 2016 07:05
And it probably wouldn’t be noticed in the test either, since it’s not a cure-all solution.