Velux window glass scratch repair This Velux window was scratched when the tilers were cleaning the roof outside. The glass had to be polished to perfection to avoid any blemishes when the sun hits it. 1 The damage to the glass is very visible in the sunlight 2 another view of the damaged glass 3 The scratches are marked for repair 4 From outside the scratches are very obvious 5 After the polishing process, the glass is clean and scratch free 6 finished look see more repairs