Spacing of wood cored rolls and drips varies with the thickness
specification of lead sheet. The following is a guide ~
Typical flat roof plan (page 417)
100mm min.
abutment upstand
to wall with
apron flashing
wood cored
roll
see previous
page
drip
verge
fascia downstand
into gutter
B
A
BS EN 12588
thickness (mm)
Maximum distance
between drips (mm) [A]
Maximum distance
between rolls (mm) [B]
1.25 and 1.50 Use for soakers only
1.75 1500 500
2.00 2000 600
2.50 2250 675
3.00 2500 675
3.50 3000 750
Timber Flat Roof Coverings -- Lead Sheet Application