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Single-Storey Frames, Shells and Lightweight Coverings 221<br />

Sealant<br />

Sliding clip<br />

Standing seam<br />

joint<br />

Lining<br />

sheet<br />

Space for<br />

mineral fibre<br />

quilt<br />

insulation<br />

Spacer<br />

Zed<br />

purlin<br />

Profiled standing<br />

seam roof sheet<br />

Figure 4.56 Profiled standing seam roofing.<br />

Weatherseal<br />

washer<br />

Dished metal<br />

washer<br />

compresses<br />

Neoprene seal<br />

Self-tapping screw<br />

for fixing to hot-rolled<br />

angle purlins<br />

Drill<br />

point<br />

Self-drilling and selftapping<br />

screw for<br />

fixing to Zed purlins<br />

Figure 4.57 Fasteners for profiled steel sheeting and decking.

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