32/1000 Box Profile 0.5 Polyester Metal Sheet

Maintenance of Metal Profiled Sheets

It is good practice to carry out annual inspection of the building exterior and to carry out any remedial work identified during the inspection. Minor scuffing of the colour coating should not be treated. Deeper scratches which reach the substrate should be repaired with touch-up paint.

The touch-up paint should only be applied to the original scratch using a fine paint brush. As touch-up paint will dry to a slightly different colour to the original coating, so the area which is touched up should be kept as small as possible.

Handling and storage

Profiles are supplied banded when delivered to site. Offloading is the responsibility of the customer. Profiles can be off-loaded directly to the roof, or to a storage area, which should be dry and well away from traffic. Packs may be stacked using suitable wooden bearers and packers. Bearers should be placed above each other.

Handle profiles carefully to avoid marking weather sheets. Lift sheets from the pack – do not drag them. Observe site health and safety procedures and the results of manual handling and other assessments.

Installation of Metal Profiled Sheets

Lay sheets in the sequence shown (figure 1), keeping the lower run one sheet ahead of the higher run to ensure that the higher sheet is always lapping over the lower sheet.

Apply a single continuous bead of 6 x 5mm butyl sealant the length of the side lap on sheet 1 (figure 2). Position sheet 2 adjacent to sheet 1 with the foot of the sheet to the eaves. Fix sheet 2 and stitch at 400mm centres on the overlap.

Apply two beads of 6 x 5mm butyl sealant to the head of sheet 1 and 2 approximately 75mm apart (figure 3). Position sheet 3 and fix through the centre of every trough between the two runs of sealant.

If fixing to intermediate purlins (no laps), see design guide on page 6 for fixing layout.