Originally, the in-house door in our home were covered with a brown, wooden like texture wall-paper.
We had to do something about it...
We have 8 in-house doors.
We first tried stripping a door from the original wallpaper, sanding and fixing the surface, and painting it with oil based white color. it did not turned out well to say the least, the total look was not even close to what we expected it to be.
So we decide to try and cover the door with new wallpaper. we bought a role (15 meter long and 90 cm wide), and a wide plastic putty knife.
We just covered the existing wallpaper, and it turned out looking very professional and has a uniform look.