The cost factor people have to consider is the cost of replacing fully functional windows just because of ther colour. The cost of fully replacing double glazing will run into the £1000’s and quickly spiral out of control. If the glass panes in your windows are fine and the open/shut mechanisms are in good condition then there isn’t any need to fully replace your windows. Spraying them professionally is a much more cost-effective solution. There is also the mess associated with fully replacing your windows which should be considered. Taking out your old windows and disposing of them can lead to a huge amount of dust and debris entering your home. Removal of the old window frames could also damage the surrounding brickwork, this issue is even worse if your property is rendered. Damaged render is notoriously difficult to patch up as if there was no damage caused. One of the most common reasons to respray is simply to change the colour of the frames. This is becoming more and more popular..