The specification of timber is essential for the long term durability of any timber window or door. Our windows and doors are manufactured from engineered timber from sustainable sources as standard. All timber is approved by either FSC® or PEFC bodies and is selected for its outstanding performance and environmental credentials. Being accredited by both bodies, we can offer complete certification if required.
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.
As standard all frames and window sashes are manufactured from European Redwood the heartwood taken from Nordic Scots pine trees. 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 or door, because if the coating remains intact the window or door 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.
As standard all door leaves are manufactured from Red Grandis. It can also be used to manufacture other products where a stable and durable hardwood is required. It is plantation grown in Uruguay and comes with FSC® Chain of Custody.
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.
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.
Sapele is a very stable and durable tropical hardwood that is very well suited to joinery manufacture. Its 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.