Steel Alternative Windows Exeter & Devon

Our steel alternative window range offers the beauty of steel window aesthetics, with the benefits and performance of aluminium. They’re the ideal solution for replacing or cost-effectively complementing existing steel windows.

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Steel Alternative Windows Devon

Steel alternative windows allow you to replicate the iconic look and design of steel windows at a significantly more cost-effective rate.

They combine high levels of thermal efficiency with great weather ratings.

We fabricate steel alternative windows on site in our Exeter factories and have several products on display in our showroom, ready to view.

Create the Heritage Look for Less

Steel-look windows help create the look of industrial, heritage and art-deco glazing.

On-trend and highly sought after, aluminium steel alternative windows are a cost-effective alternative to steel windows that are suitable for residential and commercial projects alike.

Depending on the requirements of your design, choose slimline frames in either a traditional or modern style or create a grid-like pattern of steel windows using slimline glazing bars, customised to match your style.

Technical Specifications

AluK 58BW ST

Reynaers SL 68

Cortizo Casement TB

AluK 58BW ST

The AluK 58BW ST is a steel alternative window designed to replace and complement existing steel windows.

It has been designed specifically to be installed in buildings where steel windows have previously been used.

It features square sections and sightlines of just 43mm on fixed lights.

Reynaers SL 68

The Reynaers SL 68 steel alternative window has been designed specifically to meet the needs of UK households. With high-quality designs, these slimline casement windows are perfect for replacing older steel frames, delivering a stylish and timeless aesthetic. Tried and tested to ensure it offers the highest levels of performance and industry-leading weather resistance.

Cortizo Casement TB

The Cortizo Casement TB is a steel alternative window that offers a thermally broken design for optimal insulation, with options for outward-opening side-hung or top-hung styles. Delivering excellent thermal performance with u-Values down to 1.0W/m²K and backed by PAS 24 certification, this is a versatile, high-quality choice for various property aesthetics.

Key Features

Tech Specs

Size Limits

Configurations

Colours

Hardware

Key Features

Highlights

A modern alternative to steel for traditional homes

Suitable for conservation areas

Provides the look of steel with the benefits of aluminium

Slim sightlines to match existing steel windows

Multiple configurations for any build

Multi point locking systems for superior safety

Polyamide thermal breaks for improved thermal efficiency

Green guide rated A

Made onsite in Exeter

Options

Frame Styles

Square, Putty Line, Stepped Edge

Frame Depth

58 or 70mm

Glazing

24 - 32mm

Glazing Bars

Yes

Leaded Glass

Yes

Dual Colour

Yes

Technical Specifications

Specifications

Performance

Value

U-value (Double Glazing)

1.4 W/m²K

U-value (Triple Glazing)

1.1 W/m²K

Window Energy Rating

A – B

Air Tightness

Class 4 (600 Pa)

Water Tightness

Class E1500 (1500 Pa)

Wind Resistance

Class E2400 (2400 Pa)

Security

PAS 24:2016

Q-Mark Certification

Yes

Downloads

Name

Type

Size

Aluk Windows and Doors Brochure

pdf

12.13 MB

Download

AluK 58BW ST HI Data Sheet

pdf

2.00 MB

Download

AluK 58BW ST Data Sheet

pdf

442.78 KB

Download

view all downloads

Size and Weight Limits

Specifications

Configuration

Limit

Top Hung - Max Size

1436w x 1336h mm

Top Hung - Min Size

386w x 336h mm

Side Hung - Max Size

736w x 1436h mm

Side Hung - Min Size

336w x 386h mm

Bottom Hung - Max Weight

45 kg (5 hinges)

Fixed Light - Max Weight

250 kg

Downloads

Name

Type

Size

AluK 58BW ST HI Data Sheet

pdf

2.00 MB

Download

AluK 58BW ST Data Sheet

pdf

442.78 KB

Download

view all downloads

Configurations

The AluK 58BW ST offers a wide range of possibilities. With design styles which include square, stepped edge and putty line, helping to achieve design and planning permission requirements. Plus configuration styles that include top hung, side hung, bottom hung, fixed light and multi-light options.

Fixed Light

Side Hung

Top Hung

French Casement

Window Over Fixed

Fan Light

Side Light

Top Hung Next to Side Light

Side Hung Next to Side Light

Coupled Window

AluK Colour Options

Whether you are looking for a statement colour or a more subtle colour for your steel alternative windows, the AluK 58BW ST is available in the full RAL colour range. Giving you 150 colours to choose from, guaranteeing that you will find the one that suits you.

Powder-coated to protect against the elements, as well as long-lasting colour.

Single colour allows for the same colour inside and out. Or select the dual colour option, allowing you to select an exterior colour which matches the style of the outside of the house, whilst choosing a different colour for the interior of the casement window to blend in with the internal colour scheme.

Please find some of our most popular casement window colour options below.

For further inspiration, take a look at the AluK colour collection brochure.

RAL Colours

RAL 7032 - Pebble Grey

RAL 7031 - Blue Grey

RAL 7016 - Anthracite Grey

RAL 7015 - Slate Grey

RAL 7012 - Basalt Grey

RAL 5003 - Ocean Blue

AluK Hardware Options

The AluK 58BW ST includes hardware sympathetic to traditional steel window designs.

Optio 58BW ST Handle Satin me

Optio 58BW ST Handle White

Optio 58BW ST Handle Black

Key Features

Tech Specs

Size Limits

Configurations

Colours

Key Features

Highlights

Ultra slim frame

Concealed hinges and drainage

Particularly suited for residential properties

Ideal for both contemporary and traditional properties

Perfect replacement for steel or timber windows

Enhanced thermal performance

Window Energy Rating up to A++

Side security brackets for ultra secure windows

Made onsite in Exeter

Options

Marine Grade Finish

Yes

Dual Colour

Yes

Glass Corner

Yes

Glazing

Double or Triple

Trickle Vents

Yes

Technical Specifications

Specifications

Performance

Value

U-value (Double Glazing)

1.4 W/m²K

U-value (Triple Glazing)

1.1 W/m²K

Air Tightness

Class 4 (600 Pa)

Water Tightness

E1200 (1200 Pa)

Wind Load

Class C (s1/3000)

Security

PAS 24:2016

Acoustic Performance

47(-2; -7) dB

Sightline - Min. Frame Width

15mm

Sightline - Min. Vent Width

50mm

Downloads

Name

Type

Size

Reynaers SL 68 Slimline Casement Window Brochure

pdf

3.37 MB

Download

view all downloads

Size Limits

Options

Configuration

Limit

Top Hung - Max Size

1200w x 1200h mm

Side Hung - Max Size

738w x 1300h mm

Top Hung Vent Weight - Max

50kg

Side Hung Vent Weight - Max

40kg

Configurations

All of our slimline aluminium windows are manufactured to meet your exact requirements. Available in a range of configurations including:

Outward opening
Side Hung
Top Hung
Multi-Light
Fixed Window
Glass Corner

SL68

Double Casement Side Hung

Side Hung with Friction Stays

Ventilation Window

Top Hung

Side Hung

Multi Light Side Hung

Reynaers Colour Options

We offer an array of varied colours for signature styles and classic looks. With such attractive options for slimline aluminium windows, you can create fully bespoke designs to suit the style of your property and to match your tastes.

Choose from one of our most popular colours below, or from the RAL colour range of over 150 RAL colours. In a choice of matt or gloss finish, metallic colours, textured metallic Coatex finishes, wood-grain finishes, and pre-anodised (recommended for marine locations) or anodised coating.

RAL Colours

RAL 7032 - Pebble Grey

RAL 7031 - Blue Grey

7016M - Anthracite Grey

7015M - Slate Grey

RAL 7012 - Basalt Grey

RAL 5003 - Ocean Blue

Key Features

Size & Weight Limits

Configurations

Key Features

Highlights

U-Values from from 1.0 W/ m²K

PAS 24 Certified

70mm sightlines

Thermal break zone of 32mm

Options

Value

Glazing

23-44mm

Profile Thickness

1.6mm

Polyamide strip length

32mm

Size & Weight Limits

Options

Value

Slim sash / Top hung

1,200mm (w) x 1,300mm (h)

Slim sash / Side hung

950mm (w) x 1,300mm (h)

Heavy duty sash / Side hung

750mm (w) x 1,750mm (h)

Heavy duty sash / Top hung

1,800mm (w) x 1,800mm (h)

Maximum slim sash weight

Side hung 35kg / Top hung 50kg

Maximum heavy duty sash weight

Side hung 42kg / Top hung 100kg

Configurations

The Cortizo Casement TB Window is available in side-hung or top-hung outward-opening configurations. It can be finished in several dual colour systems, colour powder coating, wood effect powder coating, anti-bacterial powder coating, or an anodised finish.