BIRD NET FIXINGS
Selection
Wide variety of fixings. You need to select your fixings based on:
- Materials - stainless steel, zinc coated or plastic
- Substrate - masonry, steel, cladding, timber; any access behind
- Appearance - obvious or discreet; shiny or rough finish
- Price versus strength and/or durability
- Speed of installation - drill hole size; insertion method; installation tools
Corner
- Heavy-duty
- Carry the weight of the system
- Fitted where net turns a corner
- Fitted every 5-10m along a straight run of wire
Old buildings sometimes have a layer of insulation and render on the outside. So solid substrate is a long way in. FB Fixings can be used to breach that gap.
Use nylon shields for thin metal cladding, and rubber shields for irregular shaped holes or brittle substrates. 2 rubber shield lengths available: use 16mm for substrates between 0.4 and 3.5mm thick and 26mm for greater than 3.5mm thick. Recommended torque 4Nm
Intermediate
- Can be light-duty
- Hold straining wire tight against the structure
- to keep the net square, neat and taut
- to prevent birds squeezing in around the edges
- Spacing: pigeons/gulls 1.0m; starlings 0.5m; sparrows 0.3m
- Some different fixings do a similar job; every installer has their favourite
- Split pins popular - only use when the pull is perpendicular to the pins otherwise they could pull out
- Screwpins more discreet than cheaper Screw Eyes
- Netspikes just drill 4.8mm hole then knock in, but do not use for soft substrates
- Metal Hangers can be used in soft or hard masonry but use smaller drill bit for soft
- Stick-on Fixings for where you cannot drill (e.g. metal flashing/glass/marble). Pre-treat with Surface Activator just prior to gluing with Avifix
- Strong Angle Brackets and Discreet Net Guides can both be installed with Self Drill or Self Tap Screws
- Girder Clips grip firmly to steel flanges. Trap the straining wire in the jaws and gently hammer part way on. After tensioning the wire, hammer fully home
Hole Sizes
Self Drill Screws
Thread diameters:
20mm - 4.8mm; 25mm - 5.5mm
Substrate metal thickness:
20mm – 0.9mm to 2.5mm
25mm – 1.3mm to 3.5mm
