Choose the material for the work.
Appearance, exposure, maintenance and budget all influence the right material. We help you compare timber, aluminium and composite options in the context of your project.
MATERIAL • GLAZING • HARDWARE • FINISH
The choices inside a well-made window.
1 — Timber & profile
The species, frame sections and glazing bars establish the character. Options include European oak, Idigbo and Accoya, selected for the application.
2 — Glazing
Glass thickness, cavity, spacer and safety requirements are specified together. Slim heritage units and deeper double-glazed units suit different frames and buildings.
3 — Hardware
Hinges, fasteners, stays and locks are chosen around the opening and daily use. Agree the finish and operation before manufacture.
4 — Surface finish
Primer-only, a full paint system or a visible-grain finish: your quotation records the preparation and coating included.
Timber chosen for the job.
Oak & joinery hardwoods
Our recent specifications include European oak and Idigbo, with Iroko cills where selected. Grain, exposure, construction and finish all influence the choice.
Accoya
Modified timber with published durability and stability testing. Explore the evidence, manufacturer warranty and what they mean for a complete window or door.
Sourcing & traceability
Pontrilas supplies hardwoods and joinery softwoods. We agree the species and grade for the order; ask us about available sourcing documentation.
Useful timber references: Jewson’s timber guide and Tudors Building Supplies, Hereford.
Glass is part of the specification.
CN Glass sealed units
CN Glass manufactures sealed units in Oxfordshire and publishes options including warm-edge spacers and gas-filled cavities. Its sealed units are manufactured to BS EN 1279 Parts 2 and 3.
Heritage detail, clearly recorded
A recent supplier quotation for our work specifies 4/8/4 toughened heritage double glazing, soft-coat glass, argon and a 7 mm sightline. This is an example specification, selected to suit that frame—not a standard for every window.
Planning and listed-building requirements, safety glazing and the final unit specification must be agreed for the property.
A closer look
Let’s talk through the details.
Compare complete specifications. Product performance, warranties and maintenance intervals should be checked for the selected system rather than assumed from the material alone.