1.
Step 1 - Preparing the structure
3.
Step 3 - Kerb dimensions
A
A1
SECTION VIEW A-A1
*All Components detailed are supplied by others.
1a. Prepare the roof structure and opening to your
preferred specification. An example structure is
shown below.
Finished
internal kerb
Finished external kerb
Kerb width
Kerb height
3a. The kerb width (including
internal finish and external covering)
must be
no greater than
130mm
. See detailed installation
in Appendix A for more information.
3b. The kerb height should be
constructed in accordance with
the guidance provided in BS6229.
Deck
must
be installed after rooflight.
Timber upstand insulation*
Decking
Decking joists*
Kerb upstand insulation*
Roof deck*
Insulation*
Plasterboard*
Plaster skim*
Vapour barrier*
Ceiling joists*
Firrings*
Timber fillet*
Membrane*
Adjustable
decking feet*