After installation of drywall, you need to close the seams. This must be done qualitatively because otherwise, over time, this will lead to cracks. There are several folk ways to close the seams. They are popular because of their simplicity and low cost.
Using paper tape. She has good strength and she is inexpensive. Cut in strips and pour boiling water to get wet. At this time, process the joints with putty. By the way, now they are very popular with Thule ruptes are often used in the repair sector.
When it dries, remove everything superfluous and polish. Then the strips of paper carefully squeeze and spread on one side with glue. You can use PVA. Well smear the strip and attach to the junction. When the paper dries, it will merge with drywall.
Using a reinforcing tape. Fill the seam with putty and right into this layer to press the tape. It is good to press it and gently level it. Everything will dry in a day. And then all bumps are removed from the surface of the tape. Make it a spatula, but without damaging the tape.. After removing all the flaws on the flat surface of the seam, put the putty slightly wider than the tape (so that the edges of the tape are not visible otherwise they will begin to bend).
And only after completely drying out the grinding. This method also guarantees complete merger with drywall.