Steel Frame Render System
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Steel Frame Render System

Steel Frame Silicone or Acrylic Finish
System Build-Up

Layer-by-layer system specification

The Steel Frame Render System is Licata's render specification for steel frame construction, starting from the A1 non-combustible fibre cement board sheathing. Licata supplies the complete system from the board outward.

Raso Top 800 is used as the reinforced basecoat, encapsulating the fibreglass mesh. Isolante LG and Siloxan Color or Lerici complete the system.

Steel Frame Render System Build-Up
System Layers

Products

1
Layer 1: Sheathing Board
A1 Fibre Cement Board
A1 non-combustible fibre cement board, fixed to the steel frame to provide the structural substrate for the render system. Must be installed level, plumb and securely fixed. All joints should be taped and filled before the basecoat is applied.
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2
Layer 2: Basecoat
Raso Top 800
Polymer-modified cementitious basecoat, applied over the fibre cement board in two passes to encapsulate the fibreglass mesh reinforcement. First pass embeds the mesh, second pass covers it fully. Minimum total thickness 4 to 6mm. Allow to cure fully before priming.
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3
Layer 3: Reinforcement
Fibreglass Mesh
Alkali-resistant fibreglass reinforcement mesh, embedded into the first pass of Raso Top 800 basecoat. Minimum 100mm laps at all joints. Apply additional diagonal mesh at all openings and corners to prevent cracking.
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4
Layer 4: Topcoat Primer
Isolante LG
Silicone-based topcoat primer, applied over the fully cured Raso Top 800 basecoat to consolidate the surface and provide uniform, controlled absorption for the render finish.
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5
Layer 5: Render Finish
Siloxan Color or Lerici
Siloxan Color silicone render: highly water-repellent, breathable, anti-mould, with a wide colour range. Lerici acrylic render: cost-effective and durable, with a wide range of textures and colours.
Siloxan Color Lerici
Products in This System

Full system, supplied by Licata

A1 Fibre Cement Board

A1 Fibre Cement Board

Non-combustible sheathing board. Layer 1 substrate for steel frame render systems.

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Raso Top 800

Raso Top 800

Polymer-modified basecoat. Layer 2, applied over the fibre cement board with mesh reinforcement.

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Fibreglass Mesh

Fibreglass Mesh

Alkali-resistant reinforcement mesh. Embedded into the Raso Top 800 basecoat.

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Isolante LG

Isolante LG

Silicone topcoat primer. Consolidates the basecoat and controls absorption for the render finish.

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Siloxan Color

Siloxan Color

Silicone render finish. Water-repellent, breathable, anti-mould. Layer 5 option.

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Lerici

Lerici

Acrylic render finish. Durable, with a wide colour and texture range. Layer 5 option.

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Specify this render system

Contact our technical team for product quantities, NBS specification clauses and project-specific advice.

Contact Technical Team All Render Systems