The Thermawood Grey Primed Berkshire is a standout choice in our latest range of external thermally rated doors. With its aluminium sheet facing, this door is built to withstand the elements, ensuring long-lasting durability without the need for additional protection like a porch or canopy. Its thermal efficiency is notable, with U values between 1.32-1.36 W/(m2.K), making it an excellent choice for energy-conscious homeowners. This door comes grey primed, providing a smooth surface ready for your preferred painted finish, allowing for customisation to suit any exterior decor. The design is versatile, with five options available, ensuring there is something to meet every taste. Additionally, its trimmable nature, allowing up to 25mm on all edges, makes it ideal for both renovation projects and new builds, offering flexibility and ease of installation. The FSC MIX 70% certification also highlights its commitment to sustainable sourcing.
Installation Guidance
- This door weighs 33kg. We recommend installing with Ball Bearing Hinges rated to a suitable weight.
- Maximum Trim on Long Edge: 25MM
- Maximum Trim on Top Edge: 25MM
- Maximum Trim on Bottom Edge: 25MM
