You mean " taping and mudding". They have a way of charging it by the foot, but it always baffles me. A lot depends on the size and shape of the rooms and if there are stairwells and how many. I always get 3 Tapers to look and quote me a price.
This could be caused by the drywall being damp. But you also shouldn't have any spackling compound there, - it should be drywall mud.
There isn't another name for spackling because it's a brand name
A drywall taper is the person who comes in after the drywall (plasterboard ) is hung and puts mud (spackling) on the joints and then seals the joints with a line of paper tape then covers the tape with more spackle This is then allowed to dry , is sanded smooth and a second layer of spackle is applied
Depending upon whether it was being sanded from the wall or ceiling there are both similar products. The common term is joint compound or spackling.
The paper on the exterior of drywall made in 1977, or the spackling compounds use to bridge the space between two pieces of drywall, may contain asbestos, or it may not. The only way to know for sure is to have a sample collected by a person who is qualified to do that, and have it analyzed by a lab that is qualified and experienced in asbestos analysis.
The mineral gypsum could be used to produce plaster and joint compounds, spackling, drywall, some floor and wall underlayments, as well as an additive in some paints, caulking, and grouts.
yes
Sand it off.
YES. They are usually done by different people at different rates.
Set yourself a fair hourly rate and then keep to it. Estimating single repairs can be very risky.
White drywall is just normal everyday drywall.
A drywall dimpler is a drill bit used to countersink a drywall screw to the proper depth without breaking the drywall paper.