Fixing swissporPIR Alu to an industrial roof deck

Identify on the drawing the steel deck into which the fasteners will anchor. Compare its profile designation and rib direction with the actual roof. On the same section, mark the vapour control layer, PIR boards and waterproofing, including their connections at the edge of the bay.

Trace the drainage path through the first bay. Measure deck levels at the outlet and at the start of the fall against a common datum. Add the designed layer thicknesses to compare the finished waterproofing level with the outlet flange.

If the flange sits too high, report the discrepancy before laying more rows. A correction requires a coordinated fall and outlet detail. Retain the thickness and laminate of the swissporPIR Alu board and avoid improvised trimming of the core to form a slope.

Read the top flange width and spacing on the deck section. Compare those dimensions against the support conditions for the selected board thickness. Check sheet ends, repaired deck areas and the edges of openings individually.

Transfer the flange direction to the layout of the first insulation layer. For a two-layer build-up, mark the upper board ends so their joints are staggered relative to those beneath. Before covering, photograph an area showing both bearing and board junction.

Distinguish the corners, perimeter and interior of the roof. Mark zone boundaries and the fixing pattern for each, as specified by the wind uplift design. Where adhesive is included in the swissporPIR Alu system, it supplements the required mechanical attachment.

At inspection, check the fastener type, its length and the substrate it engages. The same screw length can give a different embedment when the insulation thickness changes. Identify the membrane fixings separately if their layout differs in the system drawings.

Inspect corners, exposed edges and the laminate after crews have crossed the area. Mark damage on the plan. Set wet or damaged boards aside for assessment before installing the waterproofing, while their undersides can still be inspected.

At the end of a shift, identify the stopping line and how exposed layers will be protected from rain. Reinspect that line and the low points when work resumes. A dry top facing alone tells you little about water beneath a board.

Measure the insulation area in square metres and count outlets and plant kerbs separately by type. For each item identify the trade making the vapour control connection and the trade completing the waterproofing termination.

Before ordering, reconcile the detail count on the roof plan with the services drawings. An extra air-handling unit kerb may require flashing, a revised board layout and a rerouted maintenance walkway. Record the change against its plan reference so it is included in the estimate.

On the handover record, mark the area released to the next trade, the access route and approved material drop zones. Permissible delivery loads depend on the whole roof structure. The compressive stress rating of the PIR board alone cannot determine where pallets may be stored.