Thermally Efficient Clear-Glazed External Door
The Thermawood Grey Primed Dorset brings light, warmth, and efficiency together in one elegant design. Part of Doorphoria’s new External Thermal Rated Door Range, it offers U-values between 1.32 and 1.36 W/(m²·K) to help maintain indoor comfort and reduce energy costs — perfect for modern and traditional homes alike.
Engineered for British Weather
Constructed with a grey primed marine plywood face and an aluminium sheet positioned behind the outer layer, the Dorset provides excellent resistance to rain, moisture, and temperature change. This layered construction improves stability and durability, meaning a porch or canopy is not required for performance, even in exposed conditions.
Its clear glazed panel allows natural daylight to brighten your hallway or entrance while maintaining a clean, contemporary appearance that complements a wide range of property styles. Each 44mm thick door can be trimmed by up to 25mm on all edges, making it a versatile choice for both new-build and renovation projects.
Grey Primed and Ready for Finishing
Supplied grey primed (RAL 7038) with an Anker Stuy Hydrolux Duocoat water-based primer, the Dorset is moisture-regulated and ready for painting. Apply your chosen top-coat colour for a personalised finish that enhances both protection and visual appeal.
Quality Assured and Certified
All Thermawood doors are FSC Certified and tested to European standards for sustainability and performance. Each door includes a 10-year manufacturer’s guarantee and features a lightweight construction with no stile or rail connection, allowing for easier handling and installation.
Before fitting, inspect and acclimatise the door for 24–48 hours in a dry, ventilated space.
Seal and finish all six sides before hanging, trim equally from both sides (maximum 25mm per edge), and reseal all exposed edges.
Clean every two years with a mild detergent and re-coat if paint shows signs of cracking or fading.
👉 Full care guidance:
Download Thermawood Thermal External Door Care & Maintenance Instructions (PDF)
External Thermal Doors in Halifax, Huddersfield & the North
Based in Halifax, West Yorkshire, Doorphoria supplies Thermal Rated External Doors throughout Huddersfield, Leeds, Manchester, Liverpool and across the UK, with nationwide delivery available.
If you’re searching for “thermal external doors near me” or “clear glazed front doors Halifax”, the Dorset is designed to perform in Northern climates while offering modern style and energy efficiency.
💡 Key Features
- Thermally efficient – U-values 1.32–1.36 W/(m²·K)
- Clear glazed panel – allows natural light
- Marine ply face with aluminium sheet backing for added stability
- Trimmable by up to 25mm on all edges
- Grey primed RAL 7038 – ready to paint
- No porch or canopy required
- FSC Certified and EU tested
- Lightweight construction for easier installation
- 10-year manufacturer guarantee
Book an in-person showroom visit today to explore our wider ranges and receive expert guidance for your project –
Halifax Showroom Appointment
