Fitting Roof Window Flashing

Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.

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. All the same rules of flashing apply except only the measurements of chase depth and drop are required. This is a video showing the fitting of a velux roof window with instructions. Moving up on to the roof fit the flashing around the frame according to the manufacturer s instructions.

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. Finally fit the flashing above the frame. Start by fitting the sill flashing at the bottom of the frame.