Frescos are painted directly onto damp plaster on walls.
Plaster is usually applied onto Plasterboard to give it a smooth finish which can then be painted. There are other techniques, taping & jointing is one, though Plaster gives a better finish.
i can't give you an exact weight, but its honestly fibreglass isn't heavy in comparison to a plaster cast.
yes you can as long as it is a fibreglass cant not a plaster cast it will be fine
The japanese put white plaster on the walls because it is fireproof
You drain the water then plaster the walls from inside
does it cover repairing plaster walls and repainting and fixng plumbing
People do not generally put PVA glue onto walls. We can't ask questions , so you must figure out why you did that, and how you are going to get around the problem it's now causing.
Stucco
cause its the insulation they use to heat your home; usually found in walls
They really shouldn't, it is toxic.
Just paint it white!!