Professionals use grinding machines for this, which clean the entire paint very quickly and efficiently. It is also worth mentioning the thermal way to remove the old paint. This method consists in the use of a directed stream of hot air. This stream is produced by a special construction hairdryer, which heats the colors to such a state that it just falls off. This method is not much available to many, since you will ask the neighbor’s construction hairdryer, and buying it is very obscure. After removing the old paint, it remains to paint the window and let it dry well after which insert the glass and return the frames to its place.
