› Forums › General Discussion › Observatory wall sealants › Sealants
25 July 2021 at 4:42 pm
#584505
![](https://britastro.org/wp-content/uploads/2018/05/picture-1911-1525901722-80x80.jpg)
Participant
I wonder if my mistake was in not sealing it with paint before the first rain.
I really had not expected the stuff to absorb the water under any circumstance – not the behaviour you would anticipate from a “sealant”. That sounds more like filler…