Flush casement windows are characterised by their distinctive construction where the opening sash sits perfectly flush within the frame when closed, creating a seamless, flat surface with no protruding elements. This refined design differs significantly from traditional lipped casements, where the sash overlaps the frame, creating visible lines and depth. The flush profile delivers clean lines and minimal detailing that complement any architectural style, from Victorian terraces to modern new-builds. This streamlined appearance replicates the sophisticated craftsmanship of 19th-century timber joinery, offering an authentic period aesthetic that adds instant character and kerb appeal.
Browse the galleryPatented Timberweld Technology
Certified to PAS24 Specifications
Concealed Trickle Vents for An Elegant Look
U-values as low as 1.2W/m2K
Timberweld tech
Our Timberlook flush casement windows are completely sealed using patented Timberweld technology. The Timberweld concept is a method of construction which balances the aesthetics of traditional timber butt joints with the efficiencies and accuracy from modern welding. Using the Timberweld method to join the frame at each corner, we create frames that are completely sealed at the edges. With Timberweld technology, you get a quality finish that will transform the look of your windows.
Our uPVC flush casement windows masterfully recreate the appearance of traditional timber frames whilst eliminating the maintenance burden associated with wooden windows. Using advanced Timberweld technology, frames are joined with authentic butt joints that mirror historical joinery methods, delivering genuine period character. This makes flush sash windows particularly suitable for conservation areas and listed buildings where planning authorities require heritage-appropriate replacements.
The modern uPVC construction provides superior weather resistance and durability, ensuring your windows maintain their elegant appearance for decades without the need for painting, sanding or treating. You gain the timeless beauty of timber with the practical benefits of contemporary materials.
Get a QuoteEnergy performance stands as a cornerstone benefit of modern flush casement windows. Our windows achieve impressive U-values as low as 1.2 W/m²K, significantly reducing heat loss and lowering energy bills throughout the year. The multi-chambered frame design traps warm air effectively, whilst advanced double glazing with argon gas filling and warm edge spacer bars enhances thermal retention. Triple glazing options are available for homeowners seeking maximum insulation performance.
These energy-efficient windows not only create a more comfortable living environment by eliminating cold spots and draughts, but also reduce your property's carbon footprint whilst potentially increasing its market value.
Get In TouchSecurity remains paramount in window design, and our flush casement windows incorporate robust multi-point locking mechanisms as standard across all configurations. Certified to PAS24 security specifications, these windows provide comprehensive protection against forced entry attempts. Secure handles with optional key-locking functionality offer additional peace of mind, whilst concealed hinges prevent external tampering.
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Concealed trickle vents
You don't have to spoil the appearance of your new windows with unsightly trickle vents anymore. At Timberlook, we have come up with a solution - a head drip that can be attached to the Timberlook outer frame, concealing any external vent canopy. Our concealed trickle vents are designed with both aesthetics and functionality in mind, offering improved air quality while maintaining the sleek look of your windows.
Colours
Personalise your flush casement windows with an extensive range of colours and finishes designed to complement any property aesthetic. Choose from authentic woodgrain foils including Irish Oak and Rosewood for traditional appeal, or select contemporary shades such as Anthracite Grey or Black for modern styling. This versatility ensures your windows enhance your home's unique character.
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White
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Polar White
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Cream Foil
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Irish Oak
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Golden Oak
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Rosewood
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Chartwell Green
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Painswick
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Pebble Grey
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Anthracite(Woodgrain)
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Anthracite(Smooth)
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Black Foil
Cills
We offer a choice of cill options to enhance your flush casement windows. Choose between the contemporary shallow cill that comes as standard or the Radlington Cill which has been designed to add a sophisticated charm to any property.
These small but strong cills are often used for properties with stone cills, having been crafted to ensure that moisture is directed away from the frames, removing the risk of water ingress.
As the industry’s ‘standard’, these cills protrude 80mm from the front of the frame. They offer long lasting protection, are virtually maintenance free, and come in a choice of colours.
The 180mm cill is the largest cill we offer, protruding 110mm from the front of the frame. You’ll often find these cills in properties with frames that are recessed in the brickwork.
Cills are usually 30mm deep, but to accurately emulate traditional looking frames, the Radlington cill is slightly thicker at 55mm deep, protruding 95mm from the face of the frame.
Hardware
As standard, our flush casement windows are equipped with contemporary handles. However, you can customise them even further with our Premium Regency furniture. You have the option to choose from Peardrop and monkey-tail handles to give your windows a unique touch.
Our sleek window handles fit perfectly with Timberlook windows and won’t interrupt views. They are available in a wide range of colours to perfectly match our windows, and offer smooth and comfortable operation.
Inject distinctive character and timeless elegance into Timberlook windows with monkey tail handles. These elegant and durable handles add a touch of vintage charm while providing reliable functionality.
Transform the look of Timberlook windows with classic and ornate pear drop handles. These handles combine timeless aesthetics with practicality, enhancing the beauty and functionality of our flush casement windows.
Decorative and functional peg/dummy stays not only add a touch of charm to our Timberlook flush casement windows, but also provide sturdy support, improving the overall window experience.
At Timberlook, we have years of experience connecting homeowners nationwide with quality installers who provide competitive pricing and exceptional customer service.. Get in touch to get connected with your nearest professional Timberlook installer!
Take a look at some amazing feedback from our customers. We’re proud to deliver exceptional service that exceeds customer expectations and leaves them delighted with their homes.
Quality windows that have changed the look of my house completely, reasonably priced, really felt looked after. Ryan is marvellous!!!
Adrian Barliga
A great measure of any business is its aftersale service. The doors were great quality and the aftersales service outstanding. Thankyou to Ryan very helpful
S
What a pleasure to deal with, an excellent 5 star service as always
Russell Dyer
