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Description

A steel encasement system which provides a rapid method of cladding structural steel sections to provide up to 180 minutes fire resistance. The system is designed to protect all universal column and beam sections, with flange thicknesses between 6 mm and 28 mm, described in BS 4-1 (1980), and will also protect many joist sections, portal frames, and castellated beam sections. It can be used in any type of building where encasement is required to structural steel.

The system comprises Gypframe lightweight steel framing and a range of Gyproc or Glasroc linings. Where steel section web dimensions exceed 600 mm, additional support may be required for the cladding.

Partitions and wall linings can be fixed through to the metal framework. Contact the British Gypsum Drywall Academy Advice Centre for guidance.

Where 180 minutes fire protection is required to columns, Glasroc FireCase s should be specified as the cladding (fixed through to the metal framing).

Water vapour resistance:

Vapour control can be provided to encasements which form part of an external wall lining by using Gyproc FireLine DUPLEX as the lining. Water vapour resistance can be further improved by treating the lining surface with two coats of Gyproc Drywall Sealer. Where Glasroc FireCase s or Glasroc MultiBoard forms the lining, vapour control can be achieved by using a suitable proprietary paint treatment.

Not suitable for use in areas subjected to continuous damp or humid conditions. Specify MR (moisture resistant) boards in intermittent wet areas.

General information
Specification data
Product Reference

GypLyner ENCASE

Extent of protection to structural members

Columns: Four sides

Columns: Three sides

Beams: Three sides

Fire performance

30 minutes

60 minutes

90 minutes

120 minutes

180 minutes

Framing system

Sizes and spacing of framing and fixings as recommended by British Gypsum

Linings

12.5 mm Gyproc FireLine

15 mm Gyproc FireLine

25 mm Gyproc FireLine – 12.5 mm plus 12.5 mm

27.5 mm Gyproc FireLine – 15 mm plus 12.5 mm

30 mm Gyproc FireLine – 15 mm plus 15 mm

37.5 mm Gyproc FireLine – 12.5 mm plus 12.5 mm plus 12.5 mm

40 mm Gyproc FireLine – 15 mm plus 12.5 mm plus 12.5 mm

42.5 mm Gyproc FireLine – 15 mm plus 15 mm plus 12.5 mm

45 mm Gyproc FireLine – 15 mm plus 15 mm plus 15 mm

6 mm Glasroc MultiBoard

10 mm Glasroc MultiBoard

12.5 mm Glasroc MultiBoard

20 mm Glasroc MultiBoard – 10 mm plus 10 mm

25 mm Glasroc MultiBoard – 12.5 mm plus 12.5 mm

30 mm Glasroc MultiBoard – 10 mm plus 10 mm plus 10 mm

37.5 mm Glasroc MultiBoard – 12.5 mm plus 12.5 mm plus 12.5 mm

35 mm Glasroc FireCase s – 20 mm plus 15 mm

40 mm Glasroc FireCase s – 20 mm plus 20 mm

45 mm Glasroc FireCase s – 25 mm plus 20 mm

50 mm Glasroc FireCase s – 25 mm plus 25 mm

Finishing -
Type

Taped seamless finish

Skim coat plaster finish

To receive ceramic tiles

Primer/ Sealer

One coat of Gyproc Drywall Primer

For use in general circumstances.

Two coats of Gyproc Drywall Sealer

For use where vapour control is a consideration.

Accessories

Rigid beads/ stops

Product Options

Fire performance:

Consult British Gypsum to determine lining configuration required to achieve specified level of protection.

Linings:

  • Gyproc FireLine: 900 and 1200 widths available in 12.5 mm and 15 mm thicknesses. DUPLEX (vapour control) and moisture resistant grades available.
  • Glasroc Multiboard: 1200 mm wide, available in 6, 10 and 12.5 mm thicknesses.
  • Glasroc FireCase s: 600 and 1200 mm widths available in 15, 20, 25 and 30 mm thicknesses.