They are used for two purposes.
Roofing washers nz.
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50mm galvanised roof fasteners box of 50 start price.
For installation of roofs over 3m in height or for high wind zones please contact alsynite.
Msl fortress fasteners.
They are suitable for use on polycarbonate and fibreglass roofing.
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Oneshot fasteners cut an expansion hole in the sheet that ensures your polycarbonate sheet is installed correctly allowing for thermal expansion and contraction in all conditions.
Roofing supplies online offers a choice in all the colours of the nz steel endura and maxx range.
Stocking over 17000 high quality product lines around the country fortress is new zealand s premium fastener supplier.
Rubber and plastic washers.
0800 42 52 62 info fortress kiwi webshop.
Profiled washers match the rib shape and fit over the ribs of the roofing profile.
To provide an acceptable area of seal around the oversize holes drilled in the sheet material to allow for thermal expansion of the sheet refer section 2 1 3 4.
All metal washers are available painted to match the roofing and wall cladding screws.
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Vortex self drilling roofing screw beige 70mm 306 screws roof hex head washer 75 00.
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Profile roofing washers meets the load ratings for the respective profiles when installed as per the nzmrm code of practice.
Zenith epdm washers are designed to be used with zenith roofing screws to provide a water tight seal.
Ridging standard with soft edge ridging is used at the apex of a roof or at the hip joints to weatherproof the gap that is created at the high point where two sheets meet at the ridge apex or hip end.