GypLyner Encase Steel Protection System

GypLyner Encase System is a metal‑framed structural steel encasement solution designed to provide passive fire protection to steel columns, beams, joists and portal frames. Using a combination of Gypframe channels, GypLyner Encase steel framing clips, and fire‑resisting boards, the system delivers certified fire resistance in accordance with BS EN 13381‑4:2013. The system accommodates a wide range of steel sections, including all universal beams and columns with flange thicknesses between 6mm and 28mm, and many joist sections. It can be finished using standard methods such as tape and jointing or Thistle skim plaster, allowing the encasement to blend seamlessly with surrounding internal linings. The system can be configured for three‑ or four‑sided protection, depending on the steel section and fire‑resistance requirement.

A typical GypLyner Encase build‑up includes:

• Gypframe GL10 GypLyner Steel Framing Clips fixed to the steel section at 800 mm centres. 
• Gypframe GL1 Lining Channels supported by the clips to form the encasement frame. 
• Fire‑resisting boards (e.g., Gyproc FireLine or Gyproc DuraLine for enhanced durability). 
• Standard finishing options: tape and joint or Thistle skim plaster. 

Key Features

• Metal‑framed encasement system using Gypframe channels and clips. 
• Provides 30–120 minutes fire resistance, tested to BS EN 13381‑4:2013. 
• Compatible with all universal column and beam sections (flange thickness 6–28mm). 
• Suitable for protecting joists, portal frames, and many other steel sections. 
• SpecSure lifetime warranty when installed as part of a full British Gypsum system. 
• Improved acoustic performance due to boards being fixed to a frame rather than directly to steel. 
• Quick installation thanks to simple clip‑on framing components. 
• Damage is easier to identify compared with intumescent coatings

Typical Applications

• Structural steel columns and beams in commercial, residential and industrial buildings.
• Joists, portal frames and castellated beams (with reference to ASFP guidance). 
• Projects requiring robust, inspectable fire protection rather than intumescent coatings.
• Situations where acoustic or thermal performance must be maintained at abutments with partition systems.

White Book - GypLyner Encase

White Book - System design principles

22 Solutions