Finally fit the flashing above the frame.
Fitting roof window flashing.
Then move up the sides of the frame.
All the same rules of flashing apply except only the measurements of chase depth and drop are required.
Flashing is installed to surround roof features such as vents chimneys and skylights.
Unpack the window and flashing kit in the loft.
Read the instruction manual and check all the fixings and fittings are included as listed in the manual.
Once the roof window is unpacked only carry it by lifting it from the underside of the baseplate and store flat on the floor.
Start by fitting the sill flashing at the bottom of the frame.
Secure the flashing as instructed with nails or roof cement.
Http www fixmyroof co uk install roof flashings this video shows you the basics of installing lead roof flashings simple apron flashings or cover flashin.