Hi!

I drilled into our concrete/brick wall that has 1-2 cm of plasterboard/plaster and am now wondering if there is any possibility that there might have been asbestos in the wall when the building was constructed in 1929-1930. I only saw white plaster from what I can tell, but I have pictures of how it looked before the entire apartment was renovated and suspect that the wall partly consists of concrete and brick mortar. I don't think the plugs went in more than 4-5 cm.

I asked both the construction company, which is a reputable operator, and had Ocab here for a completely separate matter (heating pipes) who looked at the wall and both said it’s fine. The conclusion was that it would be very unusual to have it in mortar/concrete from that time.

So I just want to hear from you guys on the board; I have both a picture from the renovation and a drawing from 1930 indicating that the foundation is concrete (1-5-7) and then brick mortar in some parts.

It feels like a very low risk because it was never really common practice to mix asbestos in mortar in 1929-30, right?
What do you think the material is? Lightweight concrete + brick?

I have marked in red where we drilled with some images from when they renovated and built more than 15 apartments in the building. The renovation took place in 2018 and not much had happened in these premises between 1930 and now. I know that the construction company performed asbestos tests on things they suspected (with negative results) so it should be fine... but to ease my wife's (and my own) mind, I'm doing one last check before I let my mind rest :)

Thanks in advance :)
 
  • Partially demolished wall and ceiling with scaffolding; construction site showing exposed concrete and lime plaster layers, possibly from a 1929-1930 building renovation.
  • Exposed wall section with visible pipes and plaster, showing areas of drilling, possibly concrete or brick with lime mortar; radiator and windows in background.
  • Renovation site with a partially demolished room, showing exposed walls and rubble on the floor. A window and radiator are visible against the damaged wall.
  • Renovation site with exposed brick and plaster walls, scaffolding, building materials, and red marks indicating drilling areas.
  • Two workers in a partially renovated room with measuring equipment, drywall, and tools, indicating ongoing construction or renovation work.
  • Blueprint of a building from 1929-1930, showing floor plans, sections marked with red, and detailed construction notes for renovation analysis.
  • Blueprint of building foundation plan with annotations; highlighted areas possibly indicating drilled spots.
  • Blueprint of a 1929-1930 building with annotations, showing layout and construction details. Red markings indicate drilled areas on the plan.
@jonaserik What do you think about this? You seemed really knowledgeable about asbestos!
 
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