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Trisobuild HW/ FWH

Suitable for horizontal design walling applications.


Site assembled walling system with internal and external profiles.

The Trisobuild® systems can be tailored to meet project requirements including fire resistance and acoustic performance.

The Trisobuild® HW System is a horizontally run external wall system which allows the secondary steelwork to remain horizontal with the spacer and bar system spanning vertically between these rails.

The capability of the system has been tested to provide a range of performances. The wall system can achieve up to four hours fire integrity and one hour fire insulation.

Trisobuild® FW (fire wall) range system build-up:

  • The resistance to fire insulation and integrity in minutes are: FW15H: 15/240, FW30H: 30/240, and FW60H: 60/240.
  • For the FW15H system, a minimum 160 mm Knauf FactorClad insulation quilt should be used. For the FW30H and FW60H systems, a Rockwool quilt of nominal density 24 kg/m³ should be used. A minimum depth of 160 mm for the FW30H system and 200 mm for the FW60H system. Consult manufacturer for details.
  • External profile, side lap stitching is optional but recommended at a maximum 500 mm centres for aesthetic reasons only.
  • Minimum 140 mm high Instaloc® Plus spacer system for the FW15H and FW30H systems should be used and 180 mm for FW60H.
  • Internal liner profile.

Supporting structures:

When sheeting rails heat up during a fire they cease to function as structural members. Therefore, to prevent the wall from moving downwards under its own self-weight either a support at the head or base of the wall is required.

All Tata Steel firewalls can be designed to be supported from eaves, beams/ stanchions or rafters and posts if situated on a gable end. However, these elements must be protected using conventional fire protection materials to give the same period of fire resistance as the firewall.

Features and benefits:

  • Certified 'very good' to Building Research Establishment (BRE)'s responsible sourcing standard BES 6001.
  • Platinum® Plus is a system guarantee for up to 30 years, derived from a tailored specification to suit project requirements.
  • Loss Prevention Certification Board (LPCB) LPS 1181-1 approved 460a 14, 15, 19, 23 and 31.
  • The insulation within the system has both zero ozone depletion potential (ODP) and low global warming potential (GWP). Both these factors support the achievement of a high Building Research Establishment Environmental Assessment Method (BREEAM) rating.
  • Trisobuild® horizontal wall systems have been third party assessed using BS 476–22 ‘Fire resistance of non-load bearing elements’.
  • The insulation can be separated easily and if kept ‘clean’ can be recycled. An environmental product declaration (EPD) is available for all Trisobuild® systems.


Suitable for horizontal design walling applications.

General information

Uniclass 2015

Pr_25_71_14_04 Aluminium insulating sandwich panelsPrimary


H43/10 Metal insulating sandwich panel

H43/120 Metal insulating sandwich panel

Specification data - Aluminium insulating sandwich panels

Product Reference

Trisobuild® FW15H

Fire performance: Integrity: 240 minutes. Insulation: 15 minutes.

Trisobuild® FW30H

Fire performance: Integrity: 240 minutes. Insulation: 30 minutes.

Trisobuild® FW60H

Fire performance: Integrity: 240 minutes. Insulation: 60 minutes.

Trisobuild® HW


As drawing

Insert details.


120 mm

Insulation depth: 140 mm. U-value: 0.35 W/m²K.

140 mm

Insulation depth: 140 mm. U-value: 0.30 W/m²K.

160 mm

Insulation depth: 160 mm. U-value: 0.26 W/m²K.

180 mm

Insulation depth: 180 mm. U-value: 0.23 W/m²K.

200 mm

Insulation depth: 200 mm. U-value: 0.21 W/m²K.

Material/ Finish


External facing

Coloroat HPS200 Ultra® pre-coated steel

Coloroat Prisma® pre-coated steel

Internal facing

Coloroat® High Reflect steel

PE15 steel


Consult technical literature for details and insert requirements.

Standard product features

Reaction and resistance to fire:

  • All Trisobuild® HW systems have an internal reaction to fire classification of A1 and an external reaction to fire of A1 when using Colorcoat Prisma® and when using Colorcoat HPS200 Ultra is deemed to satisfy B-s3-d2 in accordance with ADB2.
  • All fire wall system performances have a maximum span limit between supports of 2 m.

Thermal performance:

All quoted system U-values and construction ‘psi’ and f values have been computer modelled in accordance with EN ISO 10211 as stated in the Metal Cladding and Roofing Manufacturers Association (MCRMA) Technical Note 14 by trained and experienced technical engineers.

U-Values are based on secondary steelwork support at 1.8 m centres, 1.2 m bracket spacing and insulation with a 0.040 W/mK thermal conductivity.


U-Values are based on an LP1000 liner, secondary steelwork support and brackets at 1.5 m centres, 1.5 m vertical bar spacing and insulation with a 0.040 W/mK thermal conductivity.

Third party certifications
  • Loss Prevention Certification Board (LPCB): Certificate: LPS1181 Part 1 : 460a, 14, 15, 19, 23, 31
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