Medina Joinery highly recommend Accoya for windows doors and Roof Lanterns. All the attached photos of windows, doors and Roof Lanterns are manufactured in Accoya.
This is due to the stability of the product. Accoya® wood is the material of choice for window and doors. Not only does it have extremely low thermal conductivity but it is more durable and dimensionally stable than the best tropical hardwoods. It can be opaque coated or, for those wishing to enjoy the natural look of wood, transparent coated. Accoya®’s low maintenance requirements add to its cost effectiveness and environmental credentials.