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NBS Source

Hi-Therm Lintel

Verified by manufacturer over a year ago

Keystone Lintels Ltd Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Hi-performance sustainability lintels for cavity widths from 90–165 mm.

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028 86 762184 www.keystonelintels.co.uk

Description

Features:

  • Patented GRP and galvanized steel hybrid design.
  • Psi value: 0.05 W/m·K.
  • Galvanized steel is used to support the heavier load on the inner leaf of the cavity wall.
  • Profiled CFC free insulation ensures the continuity of insulation.
  • Subjected to a fire test in accordance with BS EN 1363-1, at Exova Warrington Fire and achieved a one hour fire performance.

Benefits:

  • A low cost solution for reduced carbon omissions .
  • A low cost solution for enhanced fabric energy efficiency.
  • Up to five times more thermally efficient than a steel cavity wall lintel, Hi-Therm outperforms other lintels.
  • The significant reductions in thermal bridging due to the GRP component will assist in the building design process to achieve compliance with Part L and The Code for Sustainable Homes.
  • The use of Hi-Therm will make a significant contribution to a building's performance in respect of the Fabric Energy Efficiency Standards (FEES).
  • Outperforms stainless steel on price and corrosion resistance.

Usage:

  • Cavity widths from 90–165 mm.
  • Masonry widths: Outer leaf, 102 mm; inner leaf, 100 mm.

General information

Material

Manufactured from glass reinforced polymer (GRP) for the outer leaf and galvanized steel for the inner leaf

Uniclass

Pr_20_85_48_11 Carbon steel lintelsPrimary

CAWS

F30/755 Prefabricated steel lintels

F30/85 Prefabricated steel lintels

Specification data - Carbon steel lintels

Product Reference

HT/S- 100

For cavity widths 90–105 mm. Standard load.

HT/S- 130

For cavity widths 130–145 mm. Standard load.

HT/S- 150

For cavity widths 150–165 mm. Standard load.

HT/HD- 100

For cavity widths 90–105 mm. Heavy duty load.

HT/HD- 130

For cavity widths 130–145 mm. Heavy duty load.

HT/HD- 150

For cavity widths 150–165 mm. Heavy duty load.

Length

As drawing

As schedule

Standard product features

Material:

Manufactured from glass reinforced polymer (GRP) for the outer leaf and galvanized steel for the inner leaf.

Thermal performance (Psi):

0.05 W/m·K.

Product Options

Length:

Manufactured in 150 mm increments:

- HT/S lintels, 600–1500 mm:

  • Height: 135 mm.
  • Thickness: 2.5 mm.
  • Total UDL (3:1): 20 kN.
  • Total UDL (19:1): 17 kN.

- HT/S lintels, 1650–2100 mm:

  • Height: 150 mm.
  • Thickness: 2.9 mm.
  • Total UDL (3:1): 21 kN.
  • Total UDL (19:1): 17 kN.

- HT/S lintels, 2250–3000 mm:

  • Height: 229 mm.
  • Thickness: 2.9 mm.
  • Total UDL (3:1): 27 kN.
  • Total UDL (19:1): 20 kN.

- HT/S lintels, 3150–3600 mm:

  • Height: 215 mm.
  • Thickness: 3.2 mm.
  • Total UDL (3:1): 27 kN.
  • Total UDL (19:1): 20 kN.

- HT/HD lintels, 600–1500 mm:

  • Height: 150 mm.
  • Thickness: 3.2 mm.
  • Total UDL (3:1): 30 kN.
  • Total UDL (19:1): 22 kN.

- HT/HD lintels, 1650–2400 mm:

  • Height: 229 mm.
  • Thickness: 2.9 mm.
  • Total UDL (3:1): 40 kN.
  • Total UDL (19:1): 35 kN.

- HT/HD lintels, 2550–3000 mm:

  • Height: 229 mm.
  • Thickness: 3.2 mm.
  • Total UDL (3:1): 40 kN.
  • Total UDL (19:1): 35 kN.

- HT/HD lintels, 3150–3600 mm:

  • Height: 229 mm.
  • Thickness: 2.9 mm.
  • Total UDL (3:1): 35 kN.
  • Total UDL (19:1): 32 kN.

Special services:

Keystone can provide a thermal modelling analysis using Physibel's Trisco software for projects using Hi-Therm Lintels.

Third party certifications

  • British Board of Agrément (BBA) - certficate

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