SOPREMA PIR boards on industrial roofs. Coordinating layers at rooflights

Number each rooflight on the roof plan. Where kerbs differ in construction or height, assign a separate section and identify the difference in the work schedule.

Trace three separate lines from the main roof field to the kerb wall. Against each line, identify the bonding or bearing surface and the specified system material. Resolve any break on the drawing before installation.

For the aluminium-faced PIR board, the manufacturer declares λD of 0.022 W/(m·K), CS(10/Y)120 and reaction-to-fire class E. Check sealant compatibility with the kerb surface separately in the system documentation.

While the vapour control layer remains exposed, inspect the corners and its connection around the entire kerb. Record who inspected the work before the next crew covers it with boards.

Take dimensions from the installed rooflight. Check that the PIR meets the adjoining insulation at corners and kerb fixings as well. Treat gaps in accordance with the specified detail.

On the outside of the kerb, check the upstand height from the finished roof, the top termination and the corner treatment. At inspection, compare the work with the detail for the installed membrane.

Before adding a cable penetration, establish its clearance from the kerb and the working space needed for the seals. Assign responsibility for reinstating each affected layer and set an inspection point before covering.

For each number, record acceptance of the lower seal, insulation continuity and membrane separately. After later alterations, update that entry with the date, photograph and connections reinstated.