Roof dome lids are the light transmitting part that can he installed onto your own constructed timber upstands and are supplied with the necessary fixing screws.
The roof domes can be manufactured with either 2 layers (skin) of polycarbonate or 3 layers depending on the insulation requirements, and the upstands can have trickle vents added for airflow in humid environments on both the fixed kerb and linear opening roof domes.
Because of the wide variety of options available, every dome is custom made based on the list of options selected from the drop-down menu and are a special order product. The domes are manufactured and despatched rapidly direct from the manufacture and are not kept on the shelf. Delivery is normally within 5 working days. It is important to include valid phone numbers so that delivery can be made.
When picking the roof dome size for a roof dome lid to fix to a timber upstand it is important that the exterior or the upstand is not larger than the dome size. The flat flange where the fixings go through to secure to the upstand are 75mm wide and so there will be some room for adjustments if a 2 inch timber is used for the kerb. It is important the felt the timber upstand prior to the lid installation and the felt should lap onto the flat horizontal top of the timber to prevent it peeling down.