Hi
I have just started decorating my 1920's end terraced house.
I am a relative novice to decorating so any advice would be very welcome.
I have stripped 7 layers of wall paper off of the hallway and landing
(all put up by the previous owner) with the intention of painting the walls.
However, when I got back to the bare plaster I have found patches of a very thin, grey in colour, film like substance on the plaster, some off which has come away when I steamed of the wall paper.
I am assuming that this is a plaster sealant???
(Please confirm or enlighten me if you wish)
To get to the point.....
Do I need to scrape all of this off or can I apply new sealant over the top of the old?
I have just started decorating my 1920's end terraced house.
I am a relative novice to decorating so any advice would be very welcome.
I have stripped 7 layers of wall paper off of the hallway and landing
(all put up by the previous owner) with the intention of painting the walls.
However, when I got back to the bare plaster I have found patches of a very thin, grey in colour, film like substance on the plaster, some off which has come away when I steamed of the wall paper.
I am assuming that this is a plaster sealant???
(Please confirm or enlighten me if you wish)
To get to the point.....
Do I need to scrape all of this off or can I apply new sealant over the top of the old?