The Most Reliable Way of Roofing
AZ150 & G550 Lightweight Steel Trusses (60 years Warranty)
General Description
G550 & AZ150 Lightweight Steel Trusses
Strength • Precision • Modern Roofing Engineering
Engineered and installed by Westcoast Roofing Systems Ghana
The future of roofing goes beyond the external sheets that cover a building — it begins with the structure that supports it. Westcoast Roofing Systems Ghana’s G550 and AZ150 lightweight steel truss systems set a benchmark for strength, safety, and long-term value across residential, commercial, industrial, and estate developments.
Our lightweight truss technology replaces outdated, termite-prone, warp-susceptible timber systems with precision-engineered steel members designed for structural reliability, durability, and faster installation.
What is G550 Steel?
G550 is a high-tensile structural steel with a minimum yield strength of 550 MPa, engineered to withstand heavy loads without bending or deforming.
Key properties of G550 steel
- Ultra-high strength (550 MPa grade)
- Lightweight yet stronger than timber
- Consistent manufacturing — no warping or shrinking
- Resistant to termites, borers, and fungi
- Non-combustible
- Fully recyclable and environmentally sustainable
What is AZ150 Coating?
AZ150 is an aluminium–zinc alloy coating (150 g/m²) applied to steel to deliver long-term corrosion resistance—crucial for coastal, humid, and salt-exposed environments.
Why AZ150 matters
- Provides up to three times better corrosion resistance than galvanised steel
- Ideal for coastal, lagoon, and marine-exposed areas
- Prevents rust caused by salt air and acidic rainfall
- Extends structural lifespan beyond 40 years
- Reduces long-term maintenance costs
Applications of G550 & AZ150 Trusses
Our lightweight truss systems are widely used for:
- Residential homes and luxury villas
- Gated communities and real estate developments
- Warehouses, factories, and industrial sheds
- Churches, schools, hostels, and dormitories
- Shopping centres, fuel stations, and office complexes
- Hotels, resorts, and coastal properties
- Timber-to-steel replacement and roof upgrade projects
Advantages of Steel Trusses
Durability
Construction projects can be expensive. For this reason, it is imperative to use materials that will last a lifetime. Westcoast Steel roof trusses are highly durable compared to their timber counterparts. Westcoast Truss Steel is generally stronger than timber, which enhances its ability to withstand impact and elements for a longer period.
Light Weight
Another thing that makes Westcoast steel a preferred material for roof trusses is its lightweight property. Westcoast Steel is more lightweight than timber, a feature that comes in handy during transportation and installation. Handling lighter materials during transportation and installation is usually easier, and this can often translate to reduced project costs.
Flexibility in Design
Westcoast Steel trusses are prefabricated in factory , which makes it easier to achieve any shape or design for your roof truss. That means Westcoast steel trusses can be used to suit any architectural features or requirements. With timber roof trusses, however, you have limited options when it comes to design.
No Span Restrictions
Span restrictions are common with timber trusses, which can only span to a limited length. Steel trusses, on the other hand, have no limit when it comes to span. This makes them ideal for use in buildings where large areas have to be covered without the obstruction of structures, such as columns. Fire Resistance Steel has a higher fire resistance capacity than timber. If you are constructing your building in an area that is prone to bushfires, steel trusses are the ideal option to go for.
Pest Resistance
A common problem with timber materials is the infestation of pests, especially termites. Termites and other wood-boring pests are highly destructive and can affect the integrity of the structure. While you can always treat your wood with pest-resistant products, this would mean higher costs of maintenance. Steel roof trusses aren't susceptible to such problems.
DATA SHEET - aZ150 & G550 LIGHTWEIGHT TRUSSES
| Feature | Timber | G550 / AZ150 Steel Trusses |
|---|---|---|
| Weight | Heavy | Lightweight, easier to handle |
| Durability | Rot, termites, risk of fire | Fire-safe, pest-proof, corrosion protected |
| Accuracy | Warps, cracks, inconsistent sizes | 100% dimensionally stable |
| Installation | Slow, labour-intensive | Fast, prefabricated, engineered |
| Maintenance | Requires chemicals & treatment | Minimal to maintenance-free |
| Lifespan | 15–30 years | 50+ years with proper installation |
Benefits of Westcoast Steel Trusses.
- Efficient
- Durable
- Strong
- Light Weight
- Fire Resistant
- Easy to install
- Eco Friendly
- Wide range of sizes
Light Weight
Trusses are light gauge steel used for roof carcass, call farming and floor farming.
Reduce Deforestation
They are essential to reduce deforestation and to preserve wood, a fast depleting natural resource.
Immense Benefits
This is a very sustainable replacement for wood with immense benefits.