Timber Casement Windows

We make all of our flush casement timber windows to your specification, meaning that we can supply any layout of window that is required.

Sash Opening Options

Sashes can either be side hung, top hung, fixed or direct glazed. A French window or false mullion option can also be specified to provide a large opening with two sashes (can allow an opening large enough for a fire escape window, whilst maintaining the original window designs). The French option has the two sash rails meeting together, whereas the false mullion option has the frame mullion attached to the second sash to visually replicate a standard window.

Bay & Bow Windows

We are able to supply all wooden flush casement windows in the range as a bay window. We can also provide bow windows (a curved fronted window).

Round Work / Arches

We can provide a wide range of curved work designs, including arch top, internal sash arches (to top and bottom rails) as well as simple arch linings.

We have a wide range of design options, including sash and frame profiles, glazing bars and frame features, allowing you to customise the design of your wooden casement window to your requirements.

Beading

Our beads are available as Standard, Ovolo and Pencil Round. All sashes in the traditional range are beaded internally to improve security and weather performance and result in a window with longer life.

Glazing Bars

This is matched with the outside sash profile and internal glazing bead. They come with an internal glazing bar as standard.

Solid Glazing Bar

These are available in any layout and are specified at 43mm wide as standard. This can be increased if required.

Internal Frame Profile

The internal frame profile is available with Standard, Ovolo and Pencil Round moulds. Matching sash bead and astragal bar profiles are available.

Frame Options

1. Cill Extension:

Allows the cill to extend over the brickwork. As standard we offer 30, 50, 70, 90 and 110mm extentions.

2. Cill Side Extension (CSE):

Many replacement windows require cill side extensions. As standard we offer 25, 50, 75 and 100mm extensions.

3. Window Board Groove (WBG):

Our windows can be specified with a window board groove. We have the option of no groove, as well as offering a range of window boards.

We provide a range of handle and hardware options to allow you to get the appearance and performance you desire.

Affinity

Our standard handle, providing a traditional ergonomic design with push button locking and a range of colour options. This is an excellent option for a wide range of property styles. Matching fittings are available across our window and door ranges.

Celtic

Our mid-range handle offers an attractive traditional design coupled with high quality materials. It is available in a range of colours with locking as standard.

Allart – 0350

Premium quality Frank Allart design based on original period designs. Available in a range of colours with locking as standard. Matching fittings are available across our range of windows and doors.

Allart – 0352

Premium quality Frank Allart design based on original period designs. Available in a range of colours with locking as standard. Matching fittings are available across our window and door range.

Monkey Tail

An antique ironwork design giving a rustic appearance ideally suited to many traditional cottages and farmhouses. It is available in matt black or antique pewter. Complimentary fittings are available on many of our other products including our door ranges.

Bulb End

An antique ironwork design giving a rustic appearance ideally suited to many traditional cottages and farmhouses. It is available in matt black or antique pewter. Complimentary fittings are available on many of our other products including our door ranges.

We provide a comprehensive range of glazing options which can be customised for specific applications.

Glass

We also have a wide range of options to suit any special requirements you may have including:

Toughened Safety Glass: Toughening process increases strength and safety.

Laminated Security Glass: Laminate provides additional security over a toughened unit.

Acoustic Glass: Increases already high level of sound insulation using specialist laminates and thicker glass.

Solar Control Glass: Allows the heat gain from the sun to be matched to the requirements of a building.

Obscure Glass

We have a wide choice of obscure patterned glass available, all of which have different options which provide optimised performances.

Five levels of privacy are available, graded from 1 (least obscuration) to 5 (greatest obscuration).

The following traditional patterns can be selected to match existing glass.A range of etched glass is available in the following Oriel range, each design also has a diffused glass option.

Lead: We offer a wide range of widths, colours and styles.

Coloured Glass: We can provide coloured glass to your requirements (a photo of an existing design or a drawing is sufficient).

For more information on our glazing options contact us.

Our timber flush casement windows are manufactured from engineered certified Redwood Woodheart® as standard. We also have a range of hardwoods and Accoya modified timber to choose from.

Redwood WoodHeart®

As standard all frames and window sashes are manufactured from Redwood WoodHeart®, the heartwood taken from Nordic Scots pine trees (see diagram). By utilising this heartwood, we get very good durability and dimensional stability, as well as very good thermal performance.

The reduced moisture uptake and increased stability of the timber produces a substrate which enhances the coating life span (this is key to a long life window because if the coating remains intact the window will last indefinitely).

In addition it is engineered to be knot free, which along with the aesthetic effect, also prevents resin exudation, which will damage the coating.

The cill on sliding sash windows and the cill extensions on all products (if required) are, due to increased exposure to weathering (both water and UV light), manufactured from FSC sourced hardwood.

Other Options

It is possible to supply our products complete in Redwood WoodHeart® (usually only if a transparent finish is required) and in addition the following four timber options.

Red Grandis

Red Grandis provides a stable and durable substrate and is supplied as a three ply laminated material for extra stability. It is available in long, clear lengths making it highly suitable for stain finishes where no finger joints are preferred.

European Oak

In the past, high quality windows have been made from European Oak due to its durability. However, it has a tendency to move which can cause failure of the coating system and the insulating glass units. To overcome these problems we use knot free laminated European Oak which has FSC Chain of Custody.

Accoya

Accoya is an exceptionally stable modified timber and has the highest durability rating. It provides the ultimate substrate for our coating system allowing us to give a coatings warranty of up to 12 years. Accoya also comes with FSC Chain of Custody.

Sapele

Sapele is a very stable and durable tropical hardwood that is very well suited to joinery manufacture. It’s dark and dense characteristics make it a very attractive timber, well suited to a transparent coating. We source this with FSC certification to ensure it is from sustainable, certified sources.

Our unique 4 coat paint system has been developed to provide maximum protection to the timber, whilst allowing it to breathe and let its natural characteristics show through.

The coating system is vitally important for the longevity of timber windows and doors. It essentially serves three purposes; to prevent UV and visible light damage to the timber surface, to slow down the rate at which moisture is absorbed and released from the timber and to provide an attractive colouring and surface finish to the product.

Opaque Paint

We can provide almost any opaque colour, all we require is a George Barnsdale colour, a RAL colour, a Sikkens colour or an actual sample.

Translucent Paint

We can provide almost any opaque colour, all we require is a George Barnsdale colour, a RAL colour, a Sikkens colour or an actual sample.

Dual Colour

We can provide dual colour windows and doors with a different colour inside to out or frame to sash. This also allows for the frame and sash to have a different dual colour specification if required.

For more information on our unique 4 coat paint system click here.

Our wood flush casement windows have excellent performance validated by third party testing. Please find details below including links to test results.

Performance

DESIGN
Window Type	Flush	Reversible Flush
Horizontal Section Profile	view drawing	view drawing
THERMAL
Uω (Standard)	maximum of 1.6 W/m²K	maximum of 1.6 W/m²K
Uω (Best)	up to 1.0 W/m²K	up to 1.1 W/m²K
Energy Rating	up to A	up to A
View Certificates	A – 3447 , B – 3448 , C – 3449	A – 3450 , B – 3451 , C – 3452
WEATHER
Air Permeablity	Class 4	Class 4
Wind Resistance	Pass	Pass
Water Tightness	Pass	Pass
Test Reports	261 / 4653372	n/a
ACOUSTIC
Noise Reduction	up to 38dB	up to 38dB
Test Reports	view	n/a
SECURITY
Can conform to	BS 7950	BS 7950

Guarantees

Our industry leading guarantees provide confidence and reassurance that you are getting products that will last.

Our traditional flush casement windows have been designed to replicate the different styles seen throughout the past 5 centuries.

If there are strict requirements for accurate replication of exisiting windows, we also have a flush casement window in our historic range.

Historic Flush Casement Window Range

Developed to satisfy aesthetics and planning requirements, where a large sash is not permitted and there are strict rules regarding the window design in place.

This range comes with a wide range of sash options for single and double glazed systems using traditional moulds as well as our standard glazing options.

Whilst these products do not have the same thermal performance as our traditional range, they still perform extremely well and maintain the other performance properties of the traditional range.

Find out more.