› Forums › General Discussion › Observatory wall sealants › I used EverBuild external
25 July 2021 at 4:24 pm
#584504
![](https://britastro.org/wp-content/uploads/2014/04/picture-53-1397584468-80x80.jpg)
Participant
I used EverBuild external frame sealant, Grant.
I applied both to the outside wall and inside. I overpainted the latter with the polymeric concrete sealant paint base I used for the rest of the floor.