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Fixings
We stock various fastening systems for roofing and cladding and will help you choose the correct
application for your needs.
Fixings and Screws:
Self drilling TEK type screws with an 8mm hex head and bonded washers. These fix into the lower section of
profiled sheet to either wood or metal purlins. Longer screws are available for fixing through insulation
materials. Self-drilling "stitching" self-tapping screws are available for fixing sheet to sheet on laps,
flashings etc. Coloured Plastic caps are used to cover the screws so that they blend with the sheets.
Nails:
Drive screw nails are twist ring shanked nails that are used together with a spat washer for use through the top of
the profile to timber purlins.
Spring Head Nails are traditional twist nails with a large head that are used together with a spat washer for use
with corrugated sheets through the top of the corrugation into timber purlins.
In the picture above are a selection of self drilling and tapping fixings.
A. Are known as Baz fixings. They generally come in lengths of 110 - 195mm and are for securing Fibre
Cement sheets to a steel frame of 1.25mm to 3.5mm thickness. Fixings to secure to thicker steel are available.
B. These light fixings are for securing metal sheeting/flashings to steel frames, they have a course thread
and short drill point for light gauge steel, (1.25mm - 3mm) and come in various lenghts from 25 - 125mm.
C.These are heavy fixings, they have a longer drill point and a finer self-tapping thread for steel frames of 4 -12mm.
D. Gash Point Timber fixings for securing steel sheet and flashings to wooden frames.
These fixings will self drill through the steel sheet to secure it to the wood. They come in lenghts from 25 - 125mm.
E. Stitchers are used for joining the overlap of the steel sheets. They have a short drill point and a
deeper course thread to accommodate 2 sheets up to a thickness of 0.9mm per sheet.
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