Heritage Slim-Line Doors
Heritage slim-line aluminium doors designed for period properties and conservation areas. Slim 70mm thermally broken profiles deliver authentic traditional aesthetics with modern thermal performance.
Technical Specifications
| Frame Depth | 70mm |
| U-Value | 1.4 W/m²K (0.7 Ug) / 1.6 W/m²K (1.0 Ug) |
| Max Single | 1100mm × 2500mm |
| Max Double | 1800mm × 2500mm |
| Glazing | 28mm / 36mm |
| Finish | Polyester powder coat (Qualicoat approved) |
| Hardware | Traditional or contemporary |
Trade pricing available on request — quotes returned within 24 hours (Mon-Fri)
What's Included (at No Extra Cost)
Other fabricators charge extra — or simply leave it out. Every Kingsland order includes:
About the SD70 Heritage System
The SD70 TruEnergy is a thermally broken heritage door system with 70mm slim profiles designed for period properties, listed buildings, and conservation areas. The slim sightlines replicate the proportions of traditional timber and steel doors while delivering modern thermal performance — U-values of 1.4 W/m²K (0.7 Ug) or 1.6 W/m²K (1.0 Ug). Maximum tested dimensions are 1100mm x 2500mm for single doors and 1800mm x 2500mm for double doors. The system accepts 28mm or 36mm glazing and is available in heritage colour options through a Qualicoat-approved powder coating supplier. Traditional or contemporary hardware options allow the door to match the character of the building. The SD70 pairs with the SW60 TruEnergy window system for a thermally consistent, visually cohesive door-and-window package across heritage renovation projects.
Features
- Slim 70mm thermally broken profiles
- Heritage-style aesthetics
- Slim sightlines for traditional appearance
- Multi-point locking system
- Conservation area suitable
- Wide range of heritage colours
- Traditional hardware options
- Thermal break technology
Benefits
- Approved for conservation areas
- Authentic period appearance
- Modern thermal performance
- Low maintenance aluminium
- Enhanced security features
Applications
- Listed buildings
- Conservation areas
- Period property renovations
- Heritage projects
Works Perfectly With
Complete your project with these compatible aluminium systems from our trade fabrication range
How It Works
No runaround, no chasing. From enquiry to installation-ready products in four simple steps.
Send Us Your Specs
Fill out our quick form, or send us measurements and photos — drawings aren't essential.
We Confirm the Details
A quick call or email to finalise specifications.
Quote Within 24 Hours
Receive competitive trade pricing, no obligation. Mon-Fri.
Jig-Tested & Delivered
Test-fitted, glazed, and beaded in our workshop — delivered ready to fit.
Frequently Asked Questions — Heritage Doors
Are heritage aluminium doors suitable for conservation areas?
What thermal performance do heritage doors achieve?
What is the maximum heritage door size?
Interested in Heritage Doors?
Every site delay costs you money. Send us your specs and we'll quote within 24 hours — jig-tested, complete kits, delivered ready to fit.