Flush Sash Windows

Flush Sash Windows

Project Description

Flush Sash Timber Alternative Windows

With the growing trends of both heritage windows and sleek contemporary design, high-quality PVCu flush sash windows offer homeowners exclusive beautiful styling in a range of colour finishes.

Window Warehouse manufactures Halo FlushSash – a flush sash window that has the look and feel of traditional timber with all the energy-saving, security and low maintenance benefits of a Halo PVCu window.

The flush sash window from Halo has been designed to sit flush within the frame so it’s virtually indistinguishable from timber and is ideal for heritage and conservation projects, as well as creating the contemporary feel that homeowners want in new extensions and self-build projects.

Our uPVC Flush Sash Windows offer a great alternative to high-maintenance timber for the homeowner. The profile of our Flush Sash Windows sits flush in the frame, avoiding the protrusion that comes with the more classic casement design. This style of the window works well in both modern and period properties and are fast becoming a very popular choice for many improvement projects.

FlushSash adds the extra value that homeowners will appreciate. The option of mechanically jointed mullions and transoms make it a real and cost effective alternative to timber windows.

  • Virtually indistinguishable from timber original storm sash windows
  • Option of mechanically jointed transom and mullion for an authentic wooden window finish
  • Five chambered fully sculptured system
  • ‘A’ energy rated
  • 1.4 U-value with cost effective glass
  • Available in a wide range of colours

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Thermal Efficiency

The uPVC profile of our Flush Casement Windows will help to provide your customers homes with comfortable temperatures throughout the year. This window achieves impressive U-values of 1.3 W/m2K as standard, making them significantly more impressive than timber.

The double or triple glazing panes with the flush casement window act as a barrier, keeping warm air within your home for longer. This means that your customers can start to rely less on your central heating for warmth. Over time, energy bills will lessen, reducing any home’s carbon footprint.

As well as a traditional style, FlushSash has a 5 chamber frame that offers modern performance. It can achieve an ‘A’ energy rating and 1.4 U-value with a cost effective glass unit. Also, that means real ongoing savings on heating bills for homeowners, an increasingly important factor for owners of period properties or houses in conservation areas.

Any changes to period properties in conservation areas must consider how it will affect the look of the building, often fitting in with the requirements of conservation officers or a Local Authority Article 4 Direction. In the past, installing PVCu double glazing has often been difficult in many conservation areas. Halo FlushSash offers a highly secure, energy

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Hardware options

In keeping with the traditional style of the window, we offer a wide range of handles, including monkey tail handles, and hinges available to compliment the period look and feel. This allows you to create a complete heritage style window installation for your customers.

High Security

The uPVC profile we manufacture our Flush Sash Windows from is structurally secure and one of the best choices if your customers are looking to purchase a high-security window. We reinforce our double glazing with a vacuum-sealed construction, putting the glass miles ahead of outdated single glazing utilised in plenty of older sash windows currently installed in homes. When we manufacture our windows, we install into the frame the latest multi-point locking mechanisms.

Our window is designed to protect your customers family from any unwanted visitors. Unlike the traditional timber frames, our hand-finishing process gifts you a sash window with a level of weather-resistance that prevents it from rotting, warping and condensation.

Homeowners with period homes have struggled to find alternatives for windows to make their homes safe without compromising the look of their homes. Halo FlushSash offers these properties, and houses in conservation areas, a stunning choice of traditional looking windows that provide high security.

Minimal Maintenance

Unlike older wooden windows our uPVC Flush Casement Windows seek to emulate; your customers won’t be affected by any high maintenance tasks. The modern uPVC profile we use for this window will offer homeowners a lasting design.

This window won’t warp, bend, crack, fade or fake, even after prolonged exposure to the elements. All your customers need to do is give them an occasional wipe down with a damp cloth. The colour is imbued into the profile and offer lasting quality. Homeowners won’t ever have to repaint the windows from Window Warehouse.

Bespoke Profiles

The reason that our Flush Sash Windows stand out from other profiles on the market is the level optional customisation. uPVC’s flexibility is fantastic for modern home improvements because it is easy to coat in one of our many colours. This means these windows can be tailored to achieve the perfect Flush Sash Windows that match the existing look of any property. Our Flush Sash Windows are also designed with traditional features in mind. All accessories such as ancillaries, trims, dummy sashes and deep bottom rails mimic those of original sash windows.

HALO Rustique Flush Sash Casement Windows

Expertly extruded, the system is multi-chambered with a variety of reinforcement options and thermal inserts for advanced performance, security and thermal benefits. Rustique products have been independently assessed and have achieved accreditation from the British Standards Institute — BS6375 for weather performance and PAS024:2012 for security. Our PCE low-level gasket allows for quicker fabrication and installation. Choice of bead, glazing and colour options are available.

HALO System 10 Flush Sash Casement Windows

With inward or outward opening options, the FlushSash has been designed to sit flush within its frame. This product mirrors the elegant window styles of the 19th Century, making it perfect for heritage and conservation projects.

Though this window may look traditional, it offers deceptively modern performance. Equipped with energy-efficient, five-chamber uPVC cranes with double or triple glazing options, the Flush Sash comes from the System 10 suite of profiles and offers all the strength, security and energy efficiency you would expect from a Halo product.

The Flush Sash also provides a cost-effective solution to a range of problems associated with historic homes. With the look of traditional stained or painted timber, it needs little or no maintenance

Security options from Window Warehouse

Available in a great selection of colours

Window Warehouse manufactures Halo FlushSash windows in a broad range of wood grain foil colours with fully sculptured frames. Like all of our products it’s backed by great service and practical marketing support so you can make the most of it.

Flush Sash Window Gallery

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About Us

Malcolm Cake started Window Warehouse in 1986 and over 30 years later we are still serving some of our original customers. We are one of Halo’s longest standing trade fabricators and manufacture in Portsmouth.


We test our products to PAS 24 standards, meeting the latest Document Q Building Regulation requirements for new buildings.

Independent Network

Since 1996 over 230,000 homeowners have chosen a Network VEKA approved installer to fit their windows or doors. Now developed into the Independent Network, Window Warehouse is an Approved Trade Fabricator so talk to us about our outstanding installer support.


Our team is on hand to give you all the support you need. Our experts can give you technical and installation advice and offer we professional marketing and business support with our exclusive Haven retail brand promoted across Hampshire and the South Coast.

Quality First

Our windows and doors are manufactured to ISO 9001 : 2015 Quality Assurance and CENSolutions CMS Mark (CMS 6023W): Factory Production Control System compliance to EN 14351-1:2006. All our products also hold the CE Marking certification.
Halo from Window Warehouse

Halo Installer Scheme

Powerful marketing support and exclusive sales leads in your area are two advantages of the free-to-join Halo Approved Installer Scheme. As one of the longest standing Halo Trade Fabricator partners Window Warehouse.