Fitting Roof Window Flashing

When fitting flashings to flat roofs no overlap onto the roof is required as the roof itself will have it s own upstand flashing built into it.

Fitting roof window flashing.

This is a video showing the fitting of a velux roof window with instructions. Flashing is installed to surround roof features such as vents chimneys and skylights. Then move up the sides of the frame. Moving up on to the roof fit the flashing around the frame according to the manufacturer s instructions.

Finally fit the flashing above the frame. This is a video showing the fitting of a velux roof window with instructions. When fitting flashing where a flashing product hasn t previously been installed the mortar will generally need to be removed from brickwork particularly when installing flashing between a wall and a roof above windows and doors and other situations involving brickwork. All the same rules of flashing apply except only the measurements of chase depth and drop are required.