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Services » Bird Deterrent Systems » Birdwire

"an almost invisible system to prevent perching without damaging the aesthetics or construction of the building"

The Birdwire system is one of the most widely used anti-perching systems in the UK. It is used to prevent feral pigeons and gulls from perching on the ledges of buildings. The system consists of nylon coated, spring-tensioned stainless steel wire supported by stainless steel posts, which are fixed into stonework using half round tipped nylon anchor rivets. The posts are available in various sizes and stainless steel split pins can be used to fix the wire into window reveals. The posts, springs, wires and split pins are made of corrosion resistant 316-grade stainless steel. Birdwire is very versatile and a variety of special components and brackets are available to enable it to be fitted to almost any surface.

Birdwire "stick-on" system installed to protect leaded ledge to office development - Birmingham

Seagull grade Birdwire system installed to stone cornice to Corporate Bank - Guernsey

Birdwire system installed horizontally above leaded ledge using "long post" fixing to avoid penetrating lead surface

Technical Specifications

Posts
Pigeon: 4mm diameter stainless steel posts to BS316, 100 and 150mm lengths. Gull: 4mm dia. 180mm long or 5mm dia. 200mm long stainless steel posts to BS 316 Long Rods
300-900mm long, 6mm dia stainless steel posts with pre-drilled holes every 70mm to support our tensioned Birdwire. Long pins are installed horizontally into brickwork or similar. An alternative to multiple rows of Birdwire Posts or when the surface ledge cannot be penetrated.

Springs
25mm x 0.36mm stainless steel to BS316/525, 26.5kg/m tension.

Wire
0.45 and 0.9mm 1/7 stainless steel wire rope, 22kgs breaking strain.

Nylon Anchor Rivets
6.5mm diameter grey nylon, 25mm long.

"Stick-On" Bases
40mm x 40mm grey plastic injection moulded base, used when surface membrane cannot be drilled i.e. lead flashing.

Birdwire Rail Clamps
Consist of a 95mm Birdwire post welded to an expandable stainless steel band.

Birdwire Gutter Clamp
Consist of a 95mm Birdwire post welded to an adjustable clamp that can be attached to guttering or flat beams. The serrated clamp edge prevents the system sliding once secured and the plastic pad that is placed on the inside of the clamp prevents damage to the face of the material being fixed to.

Birdwire Ridge Brackets
Stainless steel strap to follow the profile of the ridge approx. 300mm x 50mm wide. 2 or 3 Nr. 175mm high stainless steel posts welded to the pinnacle and sides of the bracket depending on ridge profile. Avoids the need to penetrate the ridge when installing a Birdwire system.