Hi all hopefully you can help confirm that these pictures are hyphal growth? I’m 99% sure it is looking at the pattern, but I’m no expert.
Dealing with a condensation issue with solid brick external walls causing black mold. I’ve been keeping on top of it, but I’m certain it was in the carpet. Took the carpet up (back to solid wood floorboards), lay these black insulation foam boards to make sure I had enough. Then stored the foam boards in the shed for a couple of weeks - it’s coldish here in the uk.
When I came back to the boards today, I found this brownish