Ceiling gypsum board, fill the caulking cream and fill a tape what role?
That is afraid of thermal expansion and contraction, that seam quickly split again, make up a tape can reduce the heat up and down the pulling force.
Gypsum board seams, the general will leave 3 ~ 5mm gap, and then need to have a caulking agent for this capping treatment. Its role is: on the one hand, because the sealant has a good cohesive force, can be on both sides of the gap gypsum board (including walls) are bonded together; the other hand, through the caulking treatment, Become a certain degree of flatness. This ensures that the next bandage (that is, the tape you say) is more secure.
