Install the door first or paint the wall first. Why?

You should install the door first, and then paint the wall. The main reasons are as follows: when installing the door, use tools such as chainsaws. If you have painted it, your wall will be dirty. When installing the door, there will be doorways, basic blockboards and other materials. Those materials are long and hard, which will damage the wall if you are not careful. Although the wall can be repaired, there is a gap between the wall that is always repaired and the wall that is made at one time.