DA 60-820
Technical User Guide
25
3.12 Mounting roof sheet
3.12.1 Roofing sheet in a corrugated roofing sheet construction
Remove a roofing sheet, which completely or partly
matches the chimney roofing sheet and detach the over-
lying sheet.
Place the roofing sheet and check if there is sufficient
passage for the duct at measurement
D
.
At the bottom: Place the chimney roofing sheet on top of
the existing roofing sheet.
Secure the lower part of the roofing sheet by using one
screw in each crest.
At the top: Place the chimney roofing sheet under the
existing roofing sheet.
Mount the upper part of the roofing sheet by using one
screw in each crest.
3.12.2 Flat roofing sheet in a sandwich panel roofing sheet construction
Place flat roofing sheet so that the sides do not collide
with a crest of corrugation.
Measure the flat roofing sheets a and b.
Plot measurements on the sandwich roofing sheet.
Deduct 70 mm from the hole size (b-70 mm) at the top.
70 mm equals the space required to slide the flat roofing
sheet underneath the steel plate of the sandwich roofing
sheet.
Add 15 mm on each side at the top (15+a+15).
Saw through the sandwich roofing sheet at the top.
Saw off the crests of corrugation for bottom marking.
At the bottom marking, saw through the steel plate of the
sandwich roofing sheet.
