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Window Head
Description

Cast stone window head built into the wall immediately above a window, a window head makes for a great focal point on the exterior of a building.

Widow Heads are either plain-ended or tapered to suit a three-brick course height in a normal cavity-wall situation. Available with or without an integrated keystone, to suit British Standard brick openings. Bespoke sizes are also available, consult the manufacturer for details.

Supporting lintels must be used as these window heads are not structural members.

The manufacturer can supply replica window heads for use in a wide variety of restoration projects using 3D scanning technology in order to create a replica mould.

Material:

- Haddonstone (Semi-dry cast limestone):

High quality semi-dry cast stone, consisting of over 50% limestone aggregate. With a surface texture similar to Portland Stone, Haddonstone is regularly used alongside or as an alternative to natural stone.

- TecLite (fibre-reinforced):

High quality GFRC (Glass Fibre Reinforced Concrete). Although it closely resembles cast stone in appearance, the use of thin wall construction means the component weight is significantly reduced when compared with similar Haddonstone and TecStone pieces. Its high strength to weight ratio makes TecLite suitable for retro-fit, renovation and timber frame build projects.

- TecStone (wet cast limestone):

High quality wet cast stone, comprising over 60% natural limestone aggregate. Denser than the Haddonstone material, TecStone is acid etched as standard to provide an attractive appearance similar to a finished natural stone. Designed to meet demanding performance criteria and can incorporate structural reinforcement and cast-in fixings. TecStone is the preferred material for architectural projects where structural performance is required.

General information

Material

Haddonstone (semi-dry cast limestone)

TecLite (fibre-reinforced)

Consult manufacture for further details.

TecStone (wet cast limestone)

Uniclass 2015

Pr_20_93_52_13 Cast stone masonry unitsPrimary

CAWS

F22/110 Cast stone

H40/130 Proprietary GRC components

Specification data - Cast stone masonry units

Product Reference

Window Head R1 Plain End

Window Head R1 Tapered End

Window Head R2 Plain End with integrated Keystone

Window Head R3 Tapered End with integrated Keystone

Length

460 mm

685 mm

910 mm

1135 mm

1248 mm

1360 mm

1585 mm

Only supplied as a two-piece head.

1810 mm

Only supplied as a two-piece head.

Bespoke

Consult manufacturer for details and insert requirements.

Material

Haddonstone (semi-dry cast limestone)

TecLite (fibre-reinforced)

Consult manufacture for further details.

TecStone (wet cast limestone)

Colour

Bath 02

Ivory Limestone IL

Portland 01

Bespoke

Insert requirement for colour.

Accessories

None

Cast-in fixings

Insert requirements for cast fixings.

Cast-in lifting sockets

Insert requirements for lifting sockets.

Standard product features

Size (h x w):

215 x 102 mm.

Compressive cube strength after 28 days (minimum):

  • Haddonstone: >35 MPa.
  • TecLite: >45 MPa.
  • TecStone: >45 MPa.

Both materials exceed the requirements of the United Kingdom Cast Stone Association (UKCSA) specification and comply with the requirements of BS 1217, BS 5642-2+ A1 and BS EN 13198.

Haddonstone:

  • Material density: 2150 kg/m³.
  • Compressive strength: Minimum compressive cube strength at 28 days is >35 N/mm² (MPa).
  • Aggregate size: 0–3 mm continuously graded.
  • Finish: Ex-Mould (no finishing required).
  • Freeze/ thaw resistance: Complies with UKCSA Standards so products deemed freeze/ thaw resistant.
  • Handling reinforcement: Where appropriate units may contain one or more stainless steel, synthetic fibre or extruded basalt reinforcement bar (30 mm minimum cover).

TecLite:

  • Material density: 2000 kg/m³.
  • Compressive strength: Minimum compressive cube strength at 28 days is >45 N/mm² (MPa).
  • Aggregate: Grade 60 dry silica sand.
  • Finish: Light acid etched.
  • Fire rating: Non-flammable, non-combustible, does not give off toxic gases; reaction to fire: Euroclass A1.
  • Handling reinforcement: Glassfibre reinforcement.

TecStone:

  • Material density: 2350 kg/m³.
  • Compressive strength: Minimum compressive cube strength at 28 days is >45 N/mm² (MPa).
  • Aggregate size: 0–10 mm continuously graded.
  • Finish: Light acid etched.
  • Freeze/ thaw resistance: Complies with UKCSA Standards so products deemed freeze/ thaw resistant.
  • Handling reinforcement: Where appropriate units may contain one or more stainless steel, synthetic fibre or extruded basalt reinforcement bar (30 mm minimum cover).

Product Options

Length:

Dimensions exclude stooling – maximum 100 mm at each end.

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