All About Blastwall
The Invisible BlastWall is a unique all-fiberglass blast fence with the structural strength to withstand jet takeoff blast and remain invisible to radar and radio transmissions. It is engineered to deflect a blast of 160 km/h at a safety factor of 1.5:1, yet has sufficient frangibility to collapse upon impact without major damage to aircraft or the Invisible BlastWall.
All the components of the Invisible BlastWall, including the nuts and bolts, are made from pultruded or molded fiberglass to create a lightweight and durable structure with no metal parts. Pigment and UV stabilizers are incorporated into the fiberglass resin to make it corrosion-resistant and maintenance free.
The Invisible BlastWall has been tested extensively by NAV Canada for non-interference performance during ground based and in-flight electronic signal emissions. It has been engineered to meet or exceed NAV Canada airside installation requirements and has been approved for installation in airports across Canada.
Development History of Blastwall
The initial development of Blastwall, the unique radar invisible blast fence, was the result of a patented system developed and brought to market by the company's co-founder, the late Mark Selkirk, a noted Canadian entrepreneur in fibreglass technology applications.
The first airport deployment was a project undertaken under Mark Selkirk's leadership in 1998 between Blastwall Ltd., the Greater Toronto Airports Authority (GTAA) and NAV Canada.
In the years since that first installation, Blastwall has engineered airport installations in many challenging locations and circumstances. We invite you to view photographic galleries of three notable installations.
Blastwall continues to be engineered in Toronto and manufactured in both Canada and the USA.
We invite you to contact us today to discuss your specific project requirements.
Blastwall Physical Properties
| Lengthwise | Crosswise | |
| Tensile Strength - ASTM D638 (min.) | 200 MPa | 48 MPa |
| Tensile Modulus - ASTM D638 (min.) | 17,000 MPa | 5,500 MPa |
| Flexural Strength - ASTM D790 (min.) | 200 MPa | 70 MPa |
| Flexural Modulus - ASTM D790 (min.) | 45 | 45 |
| Compressive Strength - ASTM D695 (min.) | 0.45% | 0.45% |
| Dielectric Strength - ASTM D149 VPM (min.) | 200 | 200 |
| Dielectric strength of 25 mm. long specimen tested parallel to laminate face short time in oil KV pre 25 mm. | 35 | -- |
Blastwall PerformanceFeatures
- Non-conductive and non-magnetic to radar and radio frequencies.
- Engineered to withstand jet takeoff blast and associated high temperatures.
- Frangibility in the event of impact by aircraft achieved through specially engineered shear points.
- Structurally lightweight and easy to set without the need for cranes.
- No service interruption during installation.
- Fire-retardant, Class 1 flame-spreading rating 25 or less per ASTM E84.
- Pigment and UV stabilizers incorporated into the resin making it corrosion and UV resistant.
- Self-cleaning and maintenance free.
- Tested by NAV Canada for non-interference performance during ground based and in-flight electronic signal emissions.
- Also accepted by the FAA for installation in the United States
- Meets or exceeds NAV Canada regulations for airside installation.