Hi lads and lasses,
I am busily refurbishing a property - the ceilings had paper on them, which I removed, and the ceiling's surface then had a few swirly marks that looked like a paint or possibly some kind of glue. Maybe I could have just painted over it, but I wanted to remove it, so I tried scraping and it didn't come off, so I then tried scrubbing - no luck, so I resorted to caustic soda!
This is where I caused my troubles. I put a bit on and I left it for a while... little bits of the swirly marks were able to to be scraped off, but certainly not all of it... not the majority even.
Encouraged(!) by this, I decided to ramp-up the caustic soda concentration and the time it was left on... I put a lot more on and I left it overnight.
I returned the following morning to find that it had 'eaten' its way through things, so the ceiling surface was no longer flat... it was more like the surface of the Moon.
Damn!
I've given it a good clean with sugar soap, I've tried to fill it with Gyproc joint cement (and in some areas pre-mixed plaster) using a taping knife... it then looks OK - at least it's level - after I've left it to dry, but now paint will not properly adhere to it. It keeps bubbling away and ending up like this... then I have to scrape it again and try once more...
Can anyone offer me any advice as to what I should be doing to recover this? If you want to have a good laugh at me, that's OK, I can take it.
I am busily refurbishing a property - the ceilings had paper on them, which I removed, and the ceiling's surface then had a few swirly marks that looked like a paint or possibly some kind of glue. Maybe I could have just painted over it, but I wanted to remove it, so I tried scraping and it didn't come off, so I then tried scrubbing - no luck, so I resorted to caustic soda!
This is where I caused my troubles. I put a bit on and I left it for a while... little bits of the swirly marks were able to to be scraped off, but certainly not all of it... not the majority even.
Encouraged(!) by this, I decided to ramp-up the caustic soda concentration and the time it was left on... I put a lot more on and I left it overnight.
I returned the following morning to find that it had 'eaten' its way through things, so the ceiling surface was no longer flat... it was more like the surface of the Moon.
Damn!
I've given it a good clean with sugar soap, I've tried to fill it with Gyproc joint cement (and in some areas pre-mixed plaster) using a taping knife... it then looks OK - at least it's level - after I've left it to dry, but now paint will not properly adhere to it. It keeps bubbling away and ending up like this... then I have to scrape it again and try once more...
Can anyone offer me any advice as to what I should be doing to recover this? If you want to have a good laugh at me, that's OK, I can take it.
