Flush Casement Windows

Classic Timber Looks With Modern UPVC Performance

Beautiful flush windows manufactured by Emplas and precision-fitted by our Martlesham team. Choose the standard Profile 22 system or our fully mechanical heritage timber-look — both British-made, thermally efficient, and covered by our 10-year guarantee.

Made in Britain FENSA Registered 10-Year Guarantee Installed Across Suffolk & Essex
1.2
U-Values From (W/m²K)
90°
Mechanical Joints Available
A+
Energy Rating
10yr
Guarantee

The Elegance of Tradition, Reimagined

Flush casement windows have transformed the way we look at UPVC. Instead of the overlapping 'lip' found on standard modern windows, the sash on a flush casement sits perfectly level within the frame when closed. This clean, flat aesthetic beautifully mimics traditional 19th-century timber joinery, making it one of the most popular window styles we install from our Martlesham base for properties across Kesgrave, Ipswich, Woodbridge, Felixstowe and all of Suffolk and Essex.

We partner with leading manufacturer Emplas to supply two distinct tiers of flush window. The first uses the highly acclaimed Profile 22 Optima system, combining standard UPVC welded joints with a sleek flush exterior. For those looking for the ultimate authentic touch, we offer a fully mechanical heritage timber-look option, featuring traditional 90-degree joints, deep bottom rails, and period hardware.

Whichever system you choose, your installation begins with a free, no-pressure survey, is protected by our 10-year guarantee, and is fully FENSA-certified for complete peace of mind.

Choose Your System

Not sure which is right for your home? The standard Profile 22 provides sleek, flat lines and exceptional value. Our fully mechanical timber-look system boasts authentic 90-degree joints, making it almost indistinguishable from real wood. We'll show you samples of both at your free survey.

Our Standard System

Profile 22 UPVC Flush Casement

A beautifully engineered flush window manufactured by Emplas. It features modern diagonal welded corners but delivers the coveted flat exterior finish. With its 70mm frame and multi-chambered profile, it's a fantastic, cost-effective way to modernise a 1930s semi in Ipswich or bring character to a newer build in Kesgrave.

SightlineFlush exterior sash, standard interior
Thermal performanceU-values from 1.2 W/m²K, up to A+ WER
Profile6-chamber outer frame, 5-chamber sash
SecurityPAS24 certified, multi-point locking
Glazing24mm to 40mm (Double or Triple Glazed)
Colours19 stock foils including Agate Grey & Chartwell Green
In plain English: Modern security and warmth with a sleek, flat finish that looks much smarter than standard bulky UPVC windows, all at a price that suits most budgets.
Our Premium Heritage System

Emplas Fully Mechanical Timber-Look

The ultimate replica. Instead of diagonal plastic welds, the frame and sash are joined at sharp 90-degree angles—exactly how a carpenter builds a wooden window. Complete with an authentic deep bottom rail and optional heritage hardware, it's regularly approved for conservation areas in Woodbridge and period properties across Suffolk.

Joint construction90° fully mechanical on sash and frame
AuthenticityTraditional deep bottom rail
HardwareMonkey tail or teardrop handles available
SecurityHigh security multi-point locking, PAS24
GlazingDouble glazed with optional astragal bars
FinishesPremium woodgrain foils to mimic real timber
In plain English: It looks exactly like a beautifully crafted traditional wooden window, but it never needs painting, won't rot, and keeps the draughts firmly out.

Lead Times

Survey to Installation: 8–10 Weeks

Every flush casement window is manufactured to your exact opening dimensions by Emplas. From your free survey to installation day, our current lead time is 8 to 10 weeks. After your survey, we confirm the final measurements, place your order into production, and book your installation date. Our fitting team usually completes the installation quickly, leaving your home spotless. Bespoke colours or specialised mechanical joints can occasionally extend this timeline; we'll always give you an honest timeframe at the quotation stage.

Flush Window Price Guide

The prices below are honest, indicative ranges for standard colours including professional installation — no hidden extras. Your exact quote depends on dimensions, the system you choose (Standard vs Fully Mechanical), and any hardware or bar upgrades.

Configuration Standard UPVC (Profile 22) Fully Mechanical Timber-Look
Single Window £450 – £650 £600 – £850
Large / 3-Pane Window £750 – £950 £950 – £1,300
Bay Window £1,200 – £1,800 £1,600 – £2,400
Full House (Typical Semi) £4,500 – £6,500 £6,000 – £8,500

Customisation & Upgrades

  • Colours & Foils: 19 stock colours from Emplas, including popular Agate Grey, Chartwell Green, and authentic woodgrain finishes.
  • Astragal Bars: Add traditional Georgian or Cottage style surface-mounted bars to complete the period look.
  • Heritage Hardware: Upgrade to traditional monkey tail or teardrop handles and peg stays available in antique black, bronze, or pewter.

Recent Flush Casement Window Installations

Heritage flush casement window replacements completed for homes across Suffolk.

Frequently Asked Questions

What is a flush casement window?
Unlike standard UPVC windows where the opening sash overlaps the frame (often called a "lip"), a flush casement window features a sash that sits perfectly level and flat within the frame when closed. This design mirrors traditional 19th-century timber windows, providing a clean, elegant, and seamless appearance to your home.
What is the difference between standard flush casement and the fully mechanical timber-look?
The standard Profile 22 flush casement uses typical UPVC manufacturing methods, meaning the corners are diagonally welded together. Our premium Emplas 'fully mechanical' option ditches the welds entirely. Instead, the corners of the frame and sash are joined at sharp 90-degree angles exactly the way traditional timber windows were crafted by carpenters. It also features a deeper bottom rail, making it almost indistinguishable from real wood.
Are your flush casement windows suitable for conservation areas in Suffolk?
Yes, our fully mechanical timber-look windows are specifically designed for this purpose. Because they replicate authentic 90-degree joints, deep bottom rails, and can be fitted with traditional hardware and woodgrain foils, they are regularly approved for use in conservation areas across Suffolk and Essex. However, we always recommend checking with your local planning officer first.
How long does installation take from order?
Our current lead time from survey to installation is 8 to 10 weeks. Every window is made to measure by our supplier, Emplas. After your free survey, we confirm the dimensions, place the order, and schedule your fitting date.
Are these windows energy efficient?
Absolutely. Behind the traditional look is cutting-edge thermal technology. The Profile 22 system features a 6-chamber outer frame and a 5-chamber sash, easily achieving U-values as low as 1.2 W/m²K and an A+ Window Energy Rating, keeping your home warm and your heating bills down.
What areas do you cover?
We are based in Martlesham and supply and install flush casement windows across all surrounding areas, including Kesgrave, Ipswich, Woodbridge, Felixstowe, and throughout the whole of Suffolk and Essex.
Are your windows guaranteed?
Yes. Every installation comes with our comprehensive 10-year installation guarantee, and we are fully FENSA registered to ensure everything complies with UK building regulations.

What Our Window Customers Say

Reviews related to our flush casement windows

Mark & Julie B. • Bury St Edmunds★★★★★

We wanted to replace the old wooden windows in our cottage and the fully mechanical timber-look ones Dave recommended are perfect. You honestly can't tell they are UPVC until you touch them.

Colin R. • Colchester★★★★★

Homestyle fitted flush casement windows throughout our whole house in Agate Grey. Superb service and the lead times were exactly as promised. The house looks so much more modern.

Helen T. • Ipswich★★★★★

Absolutely brilliant from start to finish. No pressure, great advice on the hardware options, and the installers left our home absolutely spotless.

Diane W. • Woodbridge★★★★★

Cannot recommend Homestyle enough. The fitters were polite, tidy, and their attention to detail on the finishing trims around our new flush windows is exceptional.

Interested in Flush Casement Windows? Let's Chat.

We'll answer all your questions and take you through the next steps in a relaxed, no sales pressure environment — and your survey and quotation are always free.