We bought our house last year and I've been getting ready to paint it by snapping off peeling paint and sanding down, etc. (The old owners used cheap paint).
However, on one part of the wall when I took off some of the old paint, part of the top layer of render came off (about 20cm x 15cm). Underneath is another older layer of render that feels very solid. Around the edges where the render came off, I can feel the top layer is not stuck down and loose, leaving a slight gap which is obviously a concern if moisture was to get it. It also looks weird as the two types of render have different textures.
Does anyone have any recommendations on how I should fix this? I'm guessing I need to seal the gaps around the edges with some sort of sealant or adhesive, but I don't know what. I'm also not sure if I should use some kind of external filler to go over the area so it is flush with the rest of the render (it is a lumpy style of render so wouldn't need to be too pretty).
However, on one part of the wall when I took off some of the old paint, part of the top layer of render came off (about 20cm x 15cm). Underneath is another older layer of render that feels very solid. Around the edges where the render came off, I can feel the top layer is not stuck down and loose, leaving a slight gap which is obviously a concern if moisture was to get it. It also looks weird as the two types of render have different textures.
Does anyone have any recommendations on how I should fix this? I'm guessing I need to seal the gaps around the edges with some sort of sealant or adhesive, but I don't know what. I'm also not sure if I should use some kind of external filler to go over the area so it is flush with the rest of the render (it is a lumpy style of render so wouldn't need to be too pretty).