ADVANCE 70 Bay & Bow Windows 1

Bay & Bow Windows

Making Homes More Secure, Thermally Efficient & Elegant

ADVANCE 70 Bay & Bow Windows 2

Bay & Bow Windows

Multi-Chambered System for Improved Thermal Performance

Bay & Bow Windows

Enhanced Security to PAS 24 & Secured By Design

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Bay & Bow Windows

Bring in more natural light and create extra interior space

ADVANCE 70 bay and bow windows offer fabricators a flexible, high-value solution by combining three or more window units to create outward projections from the main structure. Compatible with casement, flush sash and tilt & turn configurations, the system allows you to meet a wide range of project specifications using one proven platform.

Designed for straightforward fabrication and installation, these configurations enable you to deliver added value to homeowners through increased light, enhanced space, and strong visual impact—helping you upsell beyond standard window replacements.

Bay and bow options are ideal for generating greater glazed areas, opening up panoramic views and creating a stronger connection between the property and outdoor spaces—key selling points for today’s homeowner.

Bay Windows
A popular and practical option, typically formed using three units of varying widths. The larger central frame maximises visibility, while angled side units (flankers) create depth and projection. A reliable choice for straightforward fabrication with strong kerb appeal.

Download the ADVANCE 70 Casement Window Technical Data Sheet

ADVANCE 70 Casement Window Corner Sample 1

Bow Windows
Offering a more premium finish, bow windows are constructed from three to six equal-sized units to form a smooth, curved appearance. This configuration delivers a softer aesthetic and increased light ingress, ideal for higher-end installations and design-led projects.

Add ADVANCE 70 bay and bow windows to your portfolio to provide customers with a versatile upgrade option that enhances aesthetics, increases light, and delivers strong margin potential.

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ADVANCE 70 Casement Windows

" bay and bow windows are created by combining three or more windows together so that they angle out beyond the house wall. They can be casement, flush sash or tilt and turn depending on your project needs.

By using more windows, bay and bow windows allow more light in and also give you extra space inside the property."

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ADVANCE 70 | PAS24 Windows & Doors


Enhanced Security

The perfect security solution to your next project

Our ADVANCE 70 Window System has been rigorously tested to PAS 24 and Secured by Design, thus Building Regulation Document Q and SBD compliant.

Selecta Systems window and door products have been designed to conform with the standard for enhanced security performance, which includes testing for air and water tightness and wind loading.

Our BSi Kitemark accreditation reflects high industry standards, where tests expose the products to various extremes when installed, to demonstrate conformity, which reflects the premium quality of profiles that are extruded by the company.


Thermal Performance

Designed to enhance the thermal efficiency of your next project

Our ADVANCE 70 multi-chambered bay and bow windows achieve Building Regulations Approved Document L and Future Homes Standard energy ratings and U values without adding unwanted expense.

Reducing energy bills and making the home more thermally efficient is high on the list of most homeowners. Understanding that fitting the right combination of profile and glass unit is of immense importance.

Excellent U Values can be achieved with a 4/20/4 28mm double-glazed unit, whilst a 40mm triple-glazed unit will increase both the thermal and acoustic performance further.

In Partnership With 

We have and continue to work closely with the team at Clayton Glass, achieving excellent U Values with both 28mm DGU’s and 40mm TGU’s. All of the above U Values have been achieved using 4mm glass, thus providing our fabricators and installers with a more cost effective solution when it comes to U Values.

Find out more about the partnership benefits of working with Selecta and Clayton Glass by contacting Clayton Glass directly

Technical Information

1. PVCu Frame

Multi-chambered for improved thermal efficiency and performance. Our PVCu frames are also 100% lead free!

2. High Security

PAS 24 & Secured By Design options available. Contact our Technical Department for further information.

3. Glazing Options

Double and triple glazing options - 24mm, 28mm and 40mm.

4. RTR Bar

Use RTR (Recycled Thermal Reinforcement) Bar to increase the thermal performance of your windows.

5. Gaskets & Seals

The gaskets and weatherseals are co-extruded within the frames to provide a weathertight seal - no heat loss or leaks!

Fabricator & Fitter Friendly

Fully integrated chamfered and sculptured profile system designed for low stock holding, simple fabrication and easy installation.

PAS 24

Building Regulations Document Q Compliant

ENERGY RATING

Achieve a U Value of 1.1 W/(m2K) with a 28mm DGU

WEATHER TIGHTNESS

9A 600Pa Classification

SECURED BY DESIGN

Secured By Design Compliant

  • 5 thermal chambers delivering optimal thermal performance with excellent U values and A+ WER's.
  • Low sightline and high performance weather seals for improved insulation and weather protection.
  • 24mm, 28mm and 40mm glazing options to give you the ability to fabricate cost-effective, energy-efficient windows.
  • PAS24 and Secured by Design enhanced security options.
  • Fitter friendly knock-in beads for speedy installation and easier glazing
  • Available in 18 colourfoil finishes, which are available on one or boths sides, giving you 36 colour-ways.

TOP HUNG CASEMENT - (L) 1300mm x (H) 400mm

Air Permeability Classification

2

Water Tightness Classification

9A 600Pa

Resistance to Wind Resistance

A5

Exposure Category in Accordance with BS 6375 Part 1

2000 Pa

SIDE HUNG CASEMENT - (L) 600mm x (H) 1200mm

Air Permeability Classification

2

Water Tightness Classification

9A 600Pa

Resistance to Wind Resistance

A5

Exposure Category in Accordance with BS 6375 Part 1

2000 Pa

FIXED WINDOWS PART REINFORCED - (L) 1550mm x (H) 1550mm

Air Permeability Classification

2

Water Tightness Classification

9A 600Pa

Resistance to Wind Resistance

A5

Exposure Category in Accordance with BS 6375 Part 1

2000 Pa

MULTI-LIGHT WINDOWS, RTR OR STEEL TRANSOM / MULLION REINFORCEMENTS - (L) 1908mm x (H) 1330mm

Air Permeability Classification

2

Water Tightness Classification

9A 600Pa

Resistance to Wind Resistance

A5

Exposure Category in Accordance with BS 6375 Part 1

2000 Pa

BS 6375 PART 2 PERFORMANCE

Operating Forces

1

Impact Resistance

0

Mechanical Strength

3

Resistance to Repeated Opening and Closing

2

Static Torsion

3

Racking

3

ADVANCE 70 SCULPTURED AND CHAMFERED PVCu WINDOW SYSTEM

Fabrication and Installation

Fabricated and installed in accordance with the latest issue(s) of the Selecta Systems Ltd controlled manual(s)

System Description

The windows are double glazed only, laminated to glass P1A on one pane when required, internally beaded only, multi-point locking only, with welded transoms/mullions, tee and/or cruciform joints only. Windows are classified as W.

Ventilation

None

Window Types

Casement Windows, Fixed Windows, Multi-light windows comprising opening light(s) and/or fixed light(s)

Profile Options

28mm CHAMFERED BEAD

40mm CHAMFERED BEAD

28mm SCULPTURED BEAD

40mm SCULPTURED BEAD

BEADING OPTIONS TO COMPLIMENT ADVANCE 70 WINDOWS & DOORS

The ADVANCE 70 suite of profiles are available in both a chamfered and sculptured finish.

To compliment the windows and doors, we provide a single lead bead with a co-extruded bubble gasket for excellent compression and weather seal.

The 28mm double glazing and 40mm triple glazing beads are available in both chamfered and sculptured to complimented the ADVANCE 70 suite of window and door profiles.

ADVANCE 70 TRADITIONAL 80mm OUTER FRAME

The ADVANCE 70 Window System also offers a traditional 80mm, 8 chambered frame to replicate authentic timber frames. The traditional 80mm frame is best suited to your cottage and heritage styled properties, with the benefit of increased thermal performance, owing to its 8 chambers.

The frame has also been tested to PAS 24 compliance, therefore providing enhanced security and meeting the requirements of Document Q.

Colour Options

Standard Collection

Consisting of the most popular colour combinations.

Premium Collection

Consisting of on-trend, traditional and modern colours and grained effects.

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 ADVANCE 70 COLOUR OPTIONS

Whilst many favour the bright appearance of brilliant white window frames, the emergence of coloured and more authentically grained profiles has captured the imagination of homeowners.

We offer a wide range of colour options, which have been put together to make the perfect palette for your next project. With 18 Colourfoil finishes, available on the external or internal face only or both sides, the collection provides you with 36 colourways.

With modern and traditional shades complimented with authentic wood like finishes, Colourfoil adds that finishing touch to any property. Our colour collections provide you with a fantastic palette of colour options for your next project, whatever the style, period or location.

Grained or Smooth? What is the difference?

Looking to Offer More Colour Options?

Kolorseal offer a comprehensive palette of colours for customers who want something different

Manufacture our range of products in virtually any colour you can imagine!

We have teamed up with award winning colour coating specialist, Kolorseal Ltd, meaning we can now offer our fabrication partners the chance to manufacture their range of products in virtually any colour you can imagine.

We believe with consumers now looking to personalise their homes to reflect their lifestyles, colour is an aspect that will give you an advantage in a fiercely competitive market.  It is a huge selling point to offer, that will put our fabrication partners ahead of their competitors and we believe will inspire homeowners with added value benefits.

Established 20 years ago, Kolorseal provides excellent services with a five day turnaround guarantee.  Attention to detail and customer service is paramount for the company, headed up by Deborah Hendry who has extensive knowledge of the sector.

From window and door frames to composite doors and matching rainwater products, Kolorseal can give our fabrication partners that colourful edge.

To keep things simple, visit www.kolorseal.co.uk and mention that you are a Selecta fabricator!


Aesthetics

Creating that heritage and traditional look

Create the heritage look with Urban Bar, the latest innovation from RegaLead. This clip-on aluminium astragal bar has been designed to give fabricators a cost-effective, high-performance solution for creating the ‘Crittal’ aesthetic.

Designed for both aluminium and PVCu windows and doors, Urban Bar can upgrade a standard product with a stunning industrial-style finish, creating awe-inspiring spaces that seamlessly blend nostalgia and contemporary appeal.

The aluminium astragal bars are permanently attached to the glass using a patented, sprung steel clip system to enable easy bar positioning which counteracts the effects of thermal expansion and contraction, ensuring the bars stay put for the lifetime of the door.

The flat aluminium bars provide an outstanding, authentic appearance both inside and out, and the internal Duplex bars make the single-sealed unit look like it has been created from individual panes.

Benefits

Bay & Bow Windows

The ADVANCE 70 Window System is a fully-integrated, 70mm window and door profile system with both sculptured and chamfered variations. With double and triple glazing options the 5 chambered system has been intelligently designed to meet all requirements for improved thermal efficiency.

The ADVANCE 70 Window System benefits from large reinforcement chambers, where Selecta steel sections can be inserted for additional strength and rigidity when required, or increased thermal performance when combined with our RTR (Recycled Thermal Reinforcement) Bar.

The ADVANCE 70 Window System also offers enhanced security options and when correctly specified, casement windows are PAS24 and Secured by Design approved as standard.

FABRICATOR & FITTER FRIENDLY

100% LEAD FREE

INNOVATIVE DESIGN

View & Download the Brochures

Fabricator & Installer Support

More Window Options

ADVANCE 70 Casement Windows Chartwell Green 1

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