PT Rexline Engineering Indonesia
Modern Construction Technology · Made in Indonesia

LGSF Housing & Camp Solutions

Light Gauge Steel Framing (LGSF) is a modern construction method using cold-formed steel sections: suitable for fast, durable, and precise construction across various building types.

50% Faster Seismic Resilient Foam Concrete Dry Construction Remote Deployable
LGSF Technology Overview

Rexline Engineering · LGSF Housing & Camp Solutions

LGSF, High-Precision · Sustainable · Fast Construction
Mining Camps Industrial Housing Modular Pods Commercial Buildings
What is LGSF?

Light Gauge Steel Framing Technology

LGSF is a construction technology using cold-formed steel produced by highly advanced and precise machinery. This method is highly efficient and can be adapted to a wide range of building types, subject to structural design, local codes and site conditions. It can also reduce wet trades and improve dimensional consistency compared with conventional construction, subject to design freeze, procurement, logistics, site access and installation planning.

Light Gauge Steel Framing (LGSF) uses cold-formed steel sections as the primary structural frame. It is suitable for fast, durable, and precise construction across various building types, from mining camps and industrial housing to commercial buildings and modular pods.

What Is Cellular Concrete?

Cellular concrete is a lightweight, flowable cement-based material filled with air bubbles. It offers good thermal insulation, load distribution, and speed in construction, making it a lightweight sub-base, fill or floor system that can be integrated with LGSF construction where supported by geotechnical and structural design.

LGSF Housing Structure, PT Rexline Engineering Indonesia
Why Combine LGSF with Cellular Concrete?

The Combined System Advantage

Pairing LGSF with Cellular Concrete delivers a construction system that is can shorten site installation, reduce structural self-weight and improve construction predictability when engineered for the project conditions.

Faster Installation
Cellular concrete raft foundations cure quickly, enabling faster overall project timelines with can reduce construction time compared with conventional wet construction.
Dry Construction
No bricklaying and less water usage, ideal for remote sites and areas with limited water supply or during rainy seasons.
Seismic Resilience
The lightweight superstructure can reduce seismic mass. Seismic performance is demonstrated through code-compliant structural and foundation design, ideal for seismically active regions of Indonesia including Kalimantan.
Thermal & Acoustic Insulation
Multi-layered wall systems combined with insulated foundation provide superior thermal and acoustic performance vs. conventional construction.
Lightweight Yet Strong
LGSF construction is significantly lighter than conventional masonry wall systems, huge savings in transportation costs, ideal for remote and modular housing.
Environmentally Friendly
Uses galvanized steel with 100-year+ lifespan. Sustainable, minimal waste, energy-efficient with insulating materials significantly better than brick.
Structural Specifications

LGSF Structural Specifications

All structural components are designed for precision, durability, and compliance with engineering standards.

Foundation
200mm Cellular Concrete Raft + 100–150mm RCC Slab
Wall
Steel Framing with Fiber Cement or ACP Panels
Insulation
Between studs: Glass Wool or similar
Roof
Galvalume or PUF Panel
Finishing
Gypboard interior, weather-resistant exterior
Profiles
89mm / 150mm (Thickness 0.7 to 2.0mm)
Configuration
100% LGSF or HR/LGSF Hybrid
Building Height
G+3 floors using 100% LGSF; higher with HR/CR hybrid
Technical Specifications

LGSF Technical Details

Full specification breakdown: wall cladding, roofing, flooring, and insulation options.

Wall Cladding Options
  • Fiber Cement Board / Planks
  • Cement Particle Board (Bison)
  • Knauf AQUAPANEL®
  • Aluminium Composite Panel (ACP)
  • Various other cladding options
Roof Options
  • Pitched: Fiber Cement & Galvalume / Shingles
  • Pitched: PUF sandwich panels
  • Flat Roof: Decking with Concrete
Floor Options
  • Floor joists and decking sheet with concrete
  • Fiber cement board (18 or 24mm)
Insulation
  • Rockwool Insulation
  • Glasswool Insulation
  • High thermal efficiency
LGSF Delivers
  • A viable alternative to traditional construction
  • Fast and predictable outcomes
  • Energy efficient and environmentally friendly
LGSF Design
  • Profiles: 89 or 150 mm; material thickness: 0.7-2.0 mm
  • 100% LGSF or HR/LGSF Hybrid
  • LGSF solutions for buildings up to ground plus three storeys, subject to code-compliant structural design, loading, geometry and site conditions
  • Mining camps, workforce accommodation, site offices, clinics, schools, villas, hotels and modular industrial buildings
Key Advantages

Why Choose LGSF

LGSF combines speed, strength, sustainability, and cost-efficiency, delivering superior results over conventional construction methods.

Faster Construction
can reduce construction time compared with conventional wet construction
Long Building Life
Design life depends on coating class, exposure, detailing, installation and maintenance
Eco-Friendly
Sustainable materials, minimal waste
Dry Construction
LGSF reduces wet trades above the foundation. Concrete and cellular-concrete elements still require water, placement controls and curing in accordance with the approved specification
Thermal Performance
Superior insulation using materials between studs
Suitable Building Types

LGSF Ideal For

LGSF solutions for buildings up to ground plus three storeys, subject to code-compliant structural design, loading, geometry and site conditions. Additional floors with hybrid HR/CR construction.

Hotels & Resorts
Office / Commercial
Residential
Farmhouse / Mountain
Modular Pods & Cabins
Portable Structures
Hospitals & Schools
Warehouses & Industrial
Rooftop Extensions
Mining Camps
Industrial: Other
Agribusiness Facilities
Comparison

LGSF vs Conventional Construction

A detailed comparison between traditional Brick & RCC construction and modern LGSF construction.

Brick & RCC Construction LGSF Construction
Quality of construction varies as materials sourced from different vendors.All materials are of uniform quality.
Huge transportation costs as all materials are heavy.Huge savings in transportation, LGSF is 1/10th the weight of brick wall.
Wall thickness and usable floor area vary by the selected assembly and performance requirements.Wall thickness and usable floor area vary by the selected assembly and performance requirements.
Brick walls are more prone to shrinkage cracks.Dry walls do not experience shrinkage cracks.
Wet construction, time consuming, involves curing at various stages.Dry and fast construction: no curing needed.
Design life is project-specific and depends on material protection, exposure, detailing, workmanship and maintenance.Design life is project-specific and depends on material protection, exposure, detailing, workmanship and maintenance.
Waterproofing and patches on walls are common issues.Method and workmanship take care of waterproofing issues.
External and internal finishes require more work.Stucco, tiles, stones, paints work well, cleaner lines than brick.
Hollow sound / sound transfer in wall structures.Acoustic performance is determined by the tested wall build-up; the tested STC/Rw rating and test standard are published for each offered assembly.
Insulation leading to energy savings is limited.Infill material has substantial improvement over brick wall insulation.
Door and window openings require additional work due to uneven surfaces.Better accuracy of openings in steel framing.
High time factor and financial interest burden of RCC construction.Faster timeline reduces financial interest burden significantly.
CFS framework perceived as more expensive than RCC construction.Capital cost should be compared on a like-for-like basis, including structure, finishes, logistics, programme and lifecycle requirements.
Regional Advantage

Why LGSF + Foam Concrete is Better for Kalimantan

Engineered for remote and tropical regions: including Kalimantan's rainy seasons, seismic activity, and logistics challenges.

Built Faster
Erected in days, even during rainy seasons. No curing delays.
Transport Friendly
Light and modular, easy to ship by container or light truck to remote sites.
Rain-Proof
No wet curing delays; foam concrete resists mold and water penetration.
Earthquake-Resilient
Withstands seismic activity common in Kalimantan and across Indonesia.
LGSF Housing with Foam Concrete Foundation
Higher in Quality
Faster in Speed
Enhanced Earthquake Resistance
Better Insulation
Cost-Effective, Lower labor, transport & maintenance
Foundation Technology

High Density Cellular Concrete Pavement

Methods, methodology, benefits, and application, the science behind the LGSF foundation system.

Introduction
  • Foam Concrete: Lightweight cement paste mixed with foam
  • High-Density Range: 1,000–1,800 kg/m³ for structural use
  • Applications: Pavements, void filling, slope stabilization
Foam Concrete Pavement Benefits
  • Reduced dead load on subgrade
  • Excellent thermal insulation
  • High workability and flowability
  • Faster construction timelines
  • Minimal shrinkage and settlement
Material Composition
  • Cement: OPC or blended
  • Foaming agent: Protein-based or synthetic
  • Water: Potable
  • Sand (optional) for >1,400 kg/m³ density
  • Additives: Plasticizers, retarders if needed
Why Cellular Concrete + LGSF
  • Lightweight yet load-bearing, perfect for remote logistics
  • Resists moisture and mold in tropical climates
  • Fast curing: structure ready in days, not weeks
  • Seismically compatible with LGSF superstructure
  • Cost-effective for both small and large-scale deployments
LGSF vs Conventional

LGSF Compared with Conventional Construction

Four points where the two systems differ on site, each one shown against a Rexline LGSF project delivered in Indonesia.

Rexline LGSF Housing: Indonesia site +
LGSF Housing Residential Housing Module
01 · Comparison
Time on site

The frame arrives cut to length and bolted together on a prepared raft, so the building is closed in while a masonry structure is still curing.

LGSF 50% faster completion
Conventional Formwork, brickwork and curing time
Rexline LGSF Camp Construction: Indonesia +
LGSF Camp Site Construction & Erection
02 · Comparison
How the structure carries load

Cold-formed galvanized sections carry the load at a fraction of the mass, which is what keeps the seismic demand on the building low.

LGSF Lower seismic load, light steel frame
Conventional Heavy masonry mass on every floor
LGSF Housing Rexline: Completed Project +
Completed Project LGSF Housing Delivered
03 · Comparison
Comfort and running cost

Insulation sits between the studs rather than against a solid wall, so the envelope performs better and the building costs less to keep cool.

LGSF Better insulation, energy efficient
Conventional Solid wall, higher cooling load
LGSF Housing Rexline: Field Deployment +
Field Deployment Industrial & Mining Sites
04 · Comparison
Remote and fast-track sites

Light components travel further for less, which is what makes the system work for hilly ground, island sites and mining camps.

LGSF Ideal for remote and fast-track sites
Conventional Wet trades and bulk material haulage
Product Video

See LGSF in Action

Watch Rexline's LGSF housing and camp solutions being constructed, from foundation to completion.

  • Cellular concrete foundation installation process
  • Light gauge steel framing erection
  • Wall cladding and roofing installation
  • Completed LGSF housing and camp projects
Delivering Simplicity, LGSF Prefab Building Technology
LGSF is an ideal alternative construction technology for hotels & resorts, rooftop extensions, farmhouses, mountain retreats, pods & cabins, commercial buildings, portable structures, hospitals, schools, warehouses, and industrial applications.
50% Faster Seismic Safe 100yr Lifespan Eco-Friendly Remote Deployable Dry Construction