Thermawood Grey Primed Surrey
Obscure Glazed
The Thermawood Grey Primed Surrey External Door is a modern, thermally rated external door designed to deliver outstanding energy efficiency, strength and contemporary styling. Featuring vertical U-groove detailing and a sleek central obscure glazed panel, the Surrey is ideal for front and rear entrances where privacy and natural light are equally important.
Supplied grey primed (RAL 7038) as standard, this door is ready for final decoration to match your chosen exterior colour scheme.
Advanced Thermal Performance
As part of our External Thermal Rated range, the Surrey achieves impressive U-values of approximately 1.32 – 1.36 W/m²K, helping to reduce heat loss and improve overall home efficiency.
Its engineered multi-layer construction includes:
XPS insulated foam core
Structural LVL core with Meranti lipping
Integrated 0.2mm aluminium sheet reinforcement for enhanced stability
3.6mm plywood outer layers
45mm overall door thickness
This unique construction makes the Surrey significantly stronger and more stable than a traditional timber stile and rail external door.
High-Performance Obscure Glazing
The Surrey features a tall, narrow glazed panel that allows natural daylight to flow into your hallway while maintaining privacy.
Glazing specification includes:
Frosted / Obscure Toughened safety glass
Low-E coating with Argon gas filling for improved insulation
Installed using glazing tape and sealant system for durability
This ensures both energy efficiency and long-term performance in exposed conditions.
Designed for Strength & Weather Resistance
Thanks to the reinforced aluminium sheet layer and insulated core, the Thermawood Surrey offers:
Increased resistance to warping and movement
Enhanced structural rigidity
Suitable for exposed installations without the need for a porch or canopy in many cases
The substantial 140mm frame width further enhances durability and presence
Generous Trimming Allowance – Up to 25mm
One of the standout features of the Thermawood range is its installation flexibility. The Surrey can be trimmed by up to 25mm on all edges, making it ideal for:
Renovation and replacement projects
Older properties with non-standard openings
New-build installations requiring adjustment
This level of trimming tolerance provides valuable convenience for installers.
Key Features
Thermally rated external glazed door
U-values approx. 1.32 – 1.36 W/m²K
45mm insulated multi-layer construction
Reinforced aluminium sheet core
Obscure glazed unit with Low-E & Argon gas
Grey primed (RAL 7038) ready for finishing
Trim allowance up to 25mm on all sides
Contemporary vertical groove design
10-year manufacturer’s guarantee
