Homeowner Trade
A black flush sash window with a grid pattern, perfectly aligned with the frame, set in a white brick wall, highlighting a bold and modern contrast.
Close-up of a green flush sash window with reflective glass panes, featuring a grid pattern, installed in a textured white exterior wall, capturing the reflection of nearby trees and sky.
Close-up view of a modern grey flush sash window installed in a brick and stone exterior, showcasing clean lines and sleek design.
A grey flush sash window installed in a white exterior wall, with reflective glass that mirrors nearby buildings and landscape, showcasing a clean and modern design.
A row of four white flush sash windows installed on a white textured wall, with reflective glass panes showcasing the surrounding greenery, providing a modern and clean appearance.
A brick bungalow with Timberlook flush sash windows and a grey front door, showcasing a mix of traditional and modern design elements, with a neatly landscaped front area.
A close-up view of four Irish Oak effect flush sash windows installed in a brick wall, featuring a warm wood-like finish and sleek design, reflecting outdoor surroundings.
A traditional stone cottage with cream flush sash windows, featuring a mix of double and single-pane designs, enhancing the character and charm of the home’s exterior.

Market-leading windows

Transform your home with luxury Timberlook windows

Transform your home with our stunning flush sash windows that embody both elegance and durability. Crafted to perfection, these windows combine timeless aesthetics with modern 21st century technology, offering you the warmth and charm of traditional casement windows made of timber without the maintenance. Our flush casement windows are beautiful inside and out and are designed to give your home the ultimate wow factor.

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Exceptional features of our Timberlook windows

Patented Timberweld Technology

Certified to PAS24 Specifications

Concealed Trickle Vents for An Elegant Look

U-values as low as 1.2W/m2K

What Should You Know About Flush Sash Windows?

This FAQ section addresses key questions about flush sash windows, offering insights into their design, cost, energy efficiency, and overall value. Whether you're planning a home renovation or exploring window options, our answers aim to provide you with the essential information needed to make an informed choice.

Discover the Perfect Flush Sash Windows for Your Home – Contact Us for a Quote Today

What is a flush sash window?

A flush sash window is a style of window where the sash— the part of the window that holds the glass—sits flush with the outer frame, creating a smooth, even surface. This design is often used in period properties to maintain a traditional appearance while benefiting from modern materials and performance.

Are flush windows more expensive?

The cost of flush windows can vary depending on factors like materials and customisation options. While they may sometimes be more costly than standard windows due to their bespoke design, it’s advisable to contact us for a tailored quote to meet your specific needs.

What is the difference between flush and casement windows?

The primary difference between flush and casement windows lies in the positioning of the sash. In flush windows, the sash is level with the frame, offering a sleek appearance, whereas in standard casement windows, the sash typically protrudes slightly beyond the frame.

Are flush windows worth it?

Flush windows are a worthy investment for homeowners seeking a combination of traditional aesthetics and modern performance. They offer superior energy efficiency, durability, and can significantly enhance the visual appeal of both period and contemporary homes.

Are flush windows energy-efficient?

Yes, flush windows are highly energy-efficient. Their design helps to minimise heat loss, and when combined with modern glazing options, they can contribute significantly to reducing your energy bills and improving the overall comfort of your home.

Flush Sash Window styles

Bespoke options to complement your home

At Timberlook, our Flush Sash windows come in a beautiful range of colours and styles to suit any property, from a traditional country cottage to a modern townhouse. With their slim line sightlines, choose the perfect shade from our heritage colour collection and customise your new Timberlook windows with additional decorative features like astragal bars and monkey tail handles.

Artistic sketch of a flush sash window set in a textured wall, featuring fine lines and shading to emphasize the window's traditional and elegant design.

Montague Collection

Discover the Montague Collection: exquisite windows that seamlessly blend elegance, durability, and energy efficiency for every home.

Sketch of window

Chesterfield Collection

Enhance your home with our versatile Chesterfield Collection. Designed to improve your home's performance, this collection is truly outstanding.

Sketch of bay windows

Darlington Collection

Transform your home with the Darlington Collection: a curated range of windows that combine style, performance, and lasting quality effortlessly.

Close up view of white flush window seam

Timberweld tech

Innovative technology, modern design

Our Timberlook Flush Sash windows feature a fully sealed design thanks to the innovative Timberweld join. This patented technique combines the beauty of traditional timber butt joints with a variety of woodgrain options and the precision and strength of modern welding. By utilising this complex internal weld technology, we are able to create heritage windows that combine the elegance of traditional design with a secure, weatherproof seal.

Concealed trickle vent

Concealed trickle vents

Concealed ventilation solutions for your home

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
  • Cills
  • Hardware
  • Colours

    Heritage Colour & Foil Options

    Our Timberlook windows are available in a range of standard colours, woodgrain foils and dual-colour options Our range has been curated to complement everything from period properties to modern homes.

    White

    Timberlook

    White

    Polar White

    Timberlook

    Polar White

    Cream Foil

    Timberlook

    Cream Foil

    Irish Oak

    Timberlook

    Irish Oak

    Golden Oak

    Timberlook

    Golden Oak

    Rosewood

    Timberlook

    Rosewood

    Chartwell Green

    Timberlook

    Chartwell Green

    Painswick

    Timberlook

    Painswick

    Pebble Grey

    Timberlook

    Pebble Grey

    Anthracite

    Timberlook

    Anthracite(Woodgrain)

    Anthracite

    Timberlook

    Anthracite(Smooth)

    Black Foil

    Timberlook

    Black Foil

    Cills

    Choosing the right cill for your Timberlook windows

    We offer a choice of cill options to complement your flush sash windows. Choose between the contemporary shallow cill that comes as standard or the Radlington Cill which has been designed to replicate the historic cills seen on traditional timber windows.

    85mm Stubb Cills

    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.

    150mm Cills

    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.

    180mm Cills

    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.

    Radlington 165mm

    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

    High quality hardware and optional accessories

    As standard, our flush sash 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 truly authentic period touch.

    Standard Handles

    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.

    Monkey Tail

    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.

    Pear Drop

    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.

    Peg/ Dummy Stays

    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.

    Find an Installer

    Looking for a professional Timberlook installer in your local area?

    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!

    What our customers say

    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.

    What a pleasure to deal with, an excellent 5 star service as always

    Russell Dyer

    Amazing flush casements, fantastic quality product and an amazing customer service. 10/10

    Max Daws

    One of the best suppliers we’ve ever had. Great company.

    ABC LTD

    Quality windows that have changed the look of my house completely, reasonably priced, really felt looked after. Ryan is marvellous!!!

    Adrian Barliga

    Fantastic service from all the staff , Nothing is to much trouble, quality frames on time and budget , I would highly recommend anyone who requires windows etc to contact this company.

    Arwel Evans

    Been working with these guys for a while. Fantastic trade company to work with. Always great service and products are second to none.

    P West