Timber windows and doors

CN Glass are Approved installers of George Barnsdale Timber Windows and Doors

Timber windows and doors, designed and manufactured to the highest standards will, with minimum maintenance, last longer than a lifetime. Precision-engineered windows and doors deserve skilled workmanship to match. We looked long and hard to find a well established timber window and door manufacturer who reliably supplied superior products and we finally decided to become a George Barnsdale Approved Installer – they have absolute confidence in the quality of our workmanship and ability to install their products to the required highest standards.

The windows and doors are manufactured in accordance with the latest building regulations; they are custom made to your requirements combining traditional styles with modern technology. Draught-proof, double-glazed and security measures are standard and all windows and doors are supplied fully finished for maximum durability.


What our customers have to say about our timber windows and doors…

“I just wanted to say how pleased we are with the job Rob and Dan did of fitting the quite excellent windows. To be honest with you, we knew the the windows were going to be good(!), but what’s surprised us was the level of meticulous detail and skill shown by your installers; both Rob and Dan are a credit to CN Glass. The ‘blending in’ of the cement pointing around the new window is brilliant.

We have also received excellent service from Jon and the team – thanks very much.”

Mr Brittain
Barnsdale Windows and Doors

New Build Barnsdale Windows and Doors

Traditional Entrance Door

Traditional Entrance Door and painted frame with side lights and traditional black foundry furniture

Timbers Used

For most projects, customers choose Redwood Heartwood, when properly dried and handled, it’s a stable and long lasting product. Other heartwoods are also used including European Oak and Sapele or another popular choice is Accoya, this is a chemicaly treated softwood that resists moisture penetration. All timbers are engineered to be knot-free.

Environment Impact

All the timbers used for the construction of the windows and doors are selected from well-managed forests and all timber may be traced back to its origins. Using renewable building materials from sustainable sources helps to maintain the delicate balance of greenhouse gasses in the atmosphere.

Preservative Coating

High Performance preservative coatings are applied to all timber window and door frames during production to protect the timber from moisture ingress and the damaging effects of UV light. An extensive range of colours are available. Whether you choose a stained finish or a painted finish the top quality coatings used guarantee long life and low maintenance.