I was looking at a house and couldn't help but notice that literally all the external bricks were covered by small holes, most of them filled with what looks like a kind of resin:
I'm new to the country (Australia) and I've never seen anything like that. It's definitely not caused by frost, since the minimal temperature in winter is about 8° C (46° F) and nobody I asked remember having seen snow in the area.
Many people told me they had already seen this, but no one was able to tell me what it was.
My questions are:
- What is this?
- Is this a risk for the house on the long term?
- Is there something to do or to worry about it?