Cold-formed steel (CFS) is today one of the most widespread construction materials worldwide and the backbone of LGSF technology (Light Gauge Steel Framing). In many countries, it has already replaced wood as the standard for roof trusses — from family houses through residential buildings and hotels to multi-storey structures. The reason is simple: steel addresses exactly the problems that persist with wood.
Why choose steel over wood?
Wooden roofing has its weak points — moisture, rot, mold, wood-destroying insects, shrinkage, and warping. Steel trusses do not have these concerns:
- Durability — steel does not rot, mold, or attract pests or wood-destroying insects. It does not require chemical treatment.
- Non-combustibility — fire reaction class A1. Steel does not burn or spread flames.
- Strength vs. Weight — high load-bearing capacity at low weight. A lightweight structure means simpler foundations and easier handling.
- Sustainability — steel is 100% recyclable without quality loss and its properties do not change over time.
Key fact: Steel profiles are manufactured on a CNC line with an accuracy of ±1 mm — orders of magnitude more precise than manually processed wood. The result is precise fitting of parts, minimal rework, and minimal waste.
Indicative comparison of light gauge steel (LGSF) and traditional wooden roofing.
Can steel handle any roof shape?
Trusses are designed in software and manufactured automatically with millimeter precision. Shrinkage, warping, and material supply uncertainties are eliminated. Steel can handle any roof shape — gable, hip, shed, mansard, as well as complex elements such as valleys, ridges, hips, and dormers. This opens up possibilities for attics, photovoltaics, or rainwater drainage.
What types of steel trusses exist?
Two basic configurations are used in practice. Back-to-back trusses are designed for larger spans and often require less material. Inline trusses are easy to manufacture and assemble — they fit on walls and do not require temporary bracing during installation. Both types are produced on the same production line.
Safety: Steel has fire reaction class A1 — it does not burn or spread flames. Unlike wood, an electrical short circuit will not ignite the steel frame.
Can I get steel trusses in the Czech Republic?
We offer the same technology in the Czech Republic. Skymax Living is the largest supplier of certified LGSF constructions in the Czech Republic and delivers throughout Europe. Roof trusses are manufactured from Light gauge galvanized steel S350GD (surface treatment Z275), designed according to Eurocodes (EN 1993-1-3), with an accuracy of ±1 mm — both pitched and monopitch, standardized stock items as well as custom atypical designs, ready for fast bolted assembly.
More from our offer: Roof Trusses · Flexi Panels · Modular construction.
Frequently Asked Questions
What are steel (CFS) roof trusses?
Truss systems made from thin-walled cold-formed Light gauge galvanized steel profiles, designed according to Eurocodes and manufactured on a CNC line with ±1 mm precision. They replace traditional timber roof structures.
Are steel trusses more expensive than wood?
Overall costs are comparable or lower — thanks to lighter construction (simpler foundations), faster assembly, less waste, and zero maintenance against rot and pests.
Do steel trusses burn?
No. Steel has a reaction to fire class A1 (non-combustible) and does not spread flames, unlike wood.
Can steel handle atypical roof shapes?
Yes — pitched, hipped, mono-pitched, mansard, dormers, and large spans. The shape is designed in software and manufactured precisely to measure.
