In this Home & Garden video tutorial you will learn how to remove popcorn and re-spray knockdown texture. First of all you will need to cover the floor and any hangings from the ceiling like chandeliers with plastic covering. Then you need to scrape off the areas on the ceiling and the walls and remove the popcorn completely. After it is fully removed, paint with spray paint. You will need to paint the whole room as the shade of the new paint will not match with that of the old paint. After the spraying is completed, remove the coverings from the ceiling and wall fittings, roll up the floor covering carefully and your room is ready.