Wooden Bi-folding Patio Doors (Open Out)
Download BrochureOur traditional outward opening bi-folding patio doors have been developed for high performance and long life.
The doors, also known as folding sliding patio doors, can be configured to suit a wide range of sizes, designs and layout options and there are a wide range of glazing, timber and paint options available, all offering our market leading guarantees.
Our traditional wooden folding sliding patio doors provide:
- A premium product manufactured from the finest materials and retaining traditional period features.
- Engineered timber providing excellent durability, all from certified, sustainable sources.
- Market leading warranties with a 10 year paint guarantee as standard.
- Excellent weather performance with third party test validation.
- High quality hardware and design features providing enhanced security.
Both inward and outward opening folding sliding doors have the same range of possible configurations allowing the doorset to be configured to suit the size of the opening and the layout of the room.
The diagrams below show a wide range of possibilities but almost any configuration is possible, so if you require anything different it will more than likely be possible.

We have a wide range of design options, including frame profiles, glazing bars and frame features, allowing you to customise the design of the folding sliding patio doors to your requirements.
Glazing Bead and Sash Bar Options
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 door 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.
Using high quality ironmongery, George Barnsdale folding sliding patio doors can be supplied with a wide range of standard finishes and options, all of which are compatible with our high performance Euro-profile locking system.
Affinity

Our standard handle, providing a classic design and a range of colour options. This is an excellent option for a wide range of property styles. Matching fittings available across our window and door range.
Allart – 1485
Premium quality Frank Allart design based on original period designs. Available in a range of colours. Matching fittings are available across our window and door range.
Allart – 1685

Premium quality Frank Allart design based on original period designs. Available in a range of colours. Matching fittings are available across our window and door range.
Allart – 4011

Premium quality Frank Allart design based on original period designs. Available in a range of colours. Matching fittings are available across our window and door range.
Allart 5265
Premium quality Frank Allart design based on original period designs. Available in a range of colours. Matching fittings are available across our window and door range.
Kirkpatrick – 2459
A rustic design ideally suited to traditional cottages and farmhouses. They are handmade from cast iron using traditional techniques and finished in black store cure coating. Matching fittings are available on our casement window range.
Kirkpatrick – 2460
A rustic design ideally suited to traditional cottages and farmhouses. They are handmade from cast iron using traditional techniques and finished in a black stove cure coating. Matching fittings are available on our casement window range.
We provide a comprehensive range of glazing options for our folding sliding patio doors 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 outward opening bifold patio doors 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 advanced coating system has been developed to provide maximum protection to the timber, whilst allowing it to breathe and let its natural characteristics show through.
This allows us to give a 10 year guarantee on paint finish (a 25 year guarantee may also be available – please contact us for more information).
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 RAL Standard, RAL Design, Natural Colour System (NCS) or British Standard (BS 4800) colour or an actual sample. View our Coating System Guarantee brochure.
Translucent Paint
We can provide almost any translucent colour, all we require is a RAL Standard, RAL Design, Natural Colour System (NCS) or British Standard (BS 4800) colour or an actual sample. View our Coating System Guarantee brochure.

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 advanced coating system click here.
