All Glass Cornwall - Windows, Doors and Conservatories

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Aluminium Windows in Cornwall

Allglass have been supplying and installing high quality aluminium windows throughout Cornwall and the South West for over 10 years.

Modern property with dark grey aluminium windows TruroAluminium windows are a great choice for contemporary homes and provide strength, durability and resistance to corrosion. All of our aluminium windows have been thermally broken, greatly increasing their thermal resistance, helping to combat heat loss and condensation whilst retaining their structural strength and with a 10 year guarantee on materials and workmanship you can always be confident that your investment is safe as well as your home being secure.

Characterised by a slim, elegant profile with a high quality powder-coated finish, aluminium windows are a great choice for contemporary buildings or for instances where it is important to maximise the the amount of natural light that entering the building.

If you have any questions about any of our ranges, or would like to talk with one of the All Glass team about the most suitable options for your home please do give us a call.

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Technical Specifications

See below for full technical and product information on the ranges we can supply and install.

Alitherm 300

Aluminium windows featuring an extended Polyamide thermal break which provides excellent thermal performance. The system will achieve a Window Energy Rating ‘A’ grade and also complies with the latest requirements of Building Regulations Document L 2010.

Main points:

  • An enhanced system designed to comply with the revisions to the Building Regulations Document L 2010.
  • Profiles feature an extended Polyamide thermal break that allows improve thermal performance.
  • Option of ovollo, chamfered or square edge profiles.
  • Alitherm 300 will achieve a WER A Rating.
  • Profiles width: 53mm
  • Single or dual colour, marine quality polyester powder coat as standard


Versatile selection of external flat faced profiles all with internal beading. Suitable for domestic and all commercial applications.

Standard series of profiles with thermal break, used for most traditional door and window applications in houses and industrial buildings.

Typical Applications:

  • Fixed windows for single or double glazing
  • Single or double sash, side-hung, open-in or open-out windows
  • Tilt and turn windows
  • Outward opening top-hung windows
  • Pivot windows: horizontal or vertical
  • Tilt and slide windows with appropriate hardware
  • Possibility to bend the profiles for applications such as: round windows, pointed and basket arches
  • Rounded glass beads are available for a Soft-look


  • Extruded out of aluminium-alloy AlMgSi 0,5 F22 according to DIN 1725.
  • Tolerance according to DIN17618.


  • Electrostatic powder coating: according to the guidelines of APA-Qualicoat in most of the current RAL-colours.
  • Possible to colour in wood structure to imitate different woods (Powder coated according to Qualicoat). All coatings will be delivered with a certificate of guarantee for 15 years.
  • Anodisation: in satin or bronze colours with E.E.W.A./EURAS-Qualanod quality label.
  • Thermal break: The profiles consist of 2 aluminium extrusions which are separated from one another by polyamide strips PA 6.6.25 reinforced with glass fibre. A gluing thread, rolled and pushed in together with the thermal break profile, ensures a strong adhesion after melting and flowing, when the profiles are heated in the hardening furnace.


  • Built-in depth: outer frame 51 mm, sash 60 mm.
  • Glazing rebate: 22 mm
  • Hardware rebate: according to the current European sizes (EURONUT)
  • Sealings: centre seal and inside stop rubber in EPDM.
  • Glazing: from 4 to 37 mm.
  • k-value: 3.110 W/m²K (Rahmenmateriaal-Gruppe 2.2)
  • Hardware: EUROGROOVE
  • Various forms of hardware and finishing available.
  • Windows can be joined with variable couplings or standard fixed couplings (such as 90° and 135°) using profiles with thermal break.
  • Adapter profiles for roller shutters.
  • Sill adapter
  • Window sill profiles in various depths available.

Performance level according to STS 52.0:

  •  Air transmission: PA3
  • Mechanical resistance to wind: PV2
  • Watertightness: PEE 1000 Pa

Performance level according to UEATC:

  • Air transmission: A3
  • Mechanical resistance to wind: V2
  • Watertightness: E4

Alitherm 300 – Section Details

Want to know more or need a quote?

Give us a call on 01326 563 053 and one of our team will be happy to help.

Want to know more or need a quote?

Give us a call on 01326 563 053 and one of our team will be happy to help.

Want to know more or need a quote?

Give us a call on 01326 563 053 and one of our team will be happy to help.

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