Is the permeability of normal shellac (flakes dissolved in spirits) the same as Zinsser B-I-N sealer?
I've made a whole batch of clear shellac for sealing ceiling and concrete floors in a heavily nicotine damaged apartment. But I'm worried now that there may be some differences between them, such as ...
I have a house full of wooden windows with some old flaking paint. The wood is quite solid, the glass is intact and not fogging. I was planning on scraping the windows and repainting them. My question ...