Light Gauge Steel
Overview
There are various options available for building with light gauge steel (LGS), which is a construction method that utilises thin sheets of steel formed into structural members. LGS construction offers several benefits, including speed of construction, design flexibility, durability, and energy efficiency. Here are some commonly used options for building with light gauge steel in Ireland, along with their corresponding U-values:
Structural Insulated Panels (SIPs)
Structural Insulated Panels (SIPs)
- SIPs consist of an insulating foam core sandwiched between two layers of oriented strand board (OSB) or other rigid sheathing materials. Light gauge steel frames can be used as the structural elements within SIPs. U-values for SIPs typically range from 0.15 to 0.20 W/m²K.
Steel Framing Systems
- Steel framing systems involve the use of light gauge steel studs and tracks to create the structural framework of a building. Insulation materials, such as mineral wool or rigid foam insulation, can be added between the steel studs to enhance thermal performance. U-values for steel framing systems can vary depending on the insulation used and the wall assembly design but typically range from 0.15 to 0.25 W/m²K.
Modular Construction
- LGS can be utilised in off-site modular construction, where complete building modules are manufactured in a controlled factory environment and then transported to the construction site for assembly. Modular construction with LGS can achieve high levels of energy efficiency, and U-values will depend on the specific wall, roof, and floor assemblies used.
Cold-Formed Steel Framing
- Cold-formed steel framing involves the use of light gauge steel members, such as C-shaped or Z-shaped sections, to create the structural framework of a building. Insulation can be added within the wall cavities to improve thermal performance. U-values for cold-formed steel framing can vary depending on the insulation used and the wall assembly design but typically range from 0.20 to 0.30 W/m²K.
It's important to note that the U-values mentioned above are approximate and can vary based on several factors, including insulation type, thickness, and installation quality.
Additionally, specific design considerations and building regulations should be taken into account when selecting the appropriate light gauge steel construction option and achieving the desired energy efficiency targets. Consulting with LGS manufacturers, suppliers, or construction professionals who specialise in energy-efficient building systems can provide more detailed information and guidance on the available options, U-values, and compliance with Irish building regulations.