apply the mud with a drywall trowel into the joints (you can get premixed mud) and press the tape into the mud. cover the tape with another layer of mud. let dry and sand it smooth. it may require more than one layer of mudding and sanding.
For inside corners use the same method, but fold the tape 90 degrees into the corner.
For outside corners nail up prefab metal or plastic corners and cover with mud, then sand.
hope this helps!
You tape the seams with either paper or fibre tape and then apply mud as smoothly as you can to cover the tape and leave a surface level with the board. At this first application mud is applied after mixing it smooth and put on with an 8 or 12 inch metal spreader. In about 3 days it will have dried enough for a first sanding. After this first sanding, more mud will be applied in the depressions and valleys. About 2-3 days later the second and possibly final sanding will take place. The aim is to see no difference between the places where seams are and the rest of the board. The slightest imperfection you can see at this stage will look far worse under primer.
You cover the seams with tape, then mud and then smooth it, let it dry and repeat.
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
Sheetrock is primarily gypsum, combined with sand and water.
Drywall mud is the thick, goopy white stuff you use to fill the seams between boards.
when you hang drywall, you have to tape off the seams with paper tape and "mud", then "float" the mud smooth. the drywall float is a flat metal tool on a handle that you drag across the mud to smooth it out, like when you smooth out the icing on a cake
Nothing
I use basic drywall primer over all of those.
lightly wipe the drywall mud after it drys
If it's small spread mesh tape over it, then mud it. If bigger than doorknob size, put a patch of drywall into it then mesh tape and mud.
They install drywall, sometimes tape and mud it also, although commercially that is a more specialised job.
No, you plaster or mud it first.
Painting isn't going to cover them, it is just going to give them color. You need to mud and sand them smooth, then prime before you paint.
Usually, there is drywall under the wallpaper. It is not difficult to remove the wallpaper (by steaming, or another method) to get to the basic drywall. Then, you can texture it and then paint it.