ALUMINIUM
BIFOLD DOORS
Visofold 1000 Slim System for UK Trade Installers
Slim Aluminium Bifold Door System for Trade Installers
Aluminium bifold doors provide a practical way to create wide glazed openings while maintaining slim sightlines and a contemporary appearance. Warmer Roof supplies aluminium bifold doors exclusively to UK trade installers, builders and fabricators for extensions, garden rooms, conservatory conversions and other residential and light commercial projects.
Our aluminium bifold door system uses the Visofold 1000 Slim from Smart Systems, combining thermally broken aluminium profiles with 122mm slim sightlines, PAS24 security testing and a range of configurations and threshold options. This gives installers flexibility when specifying aluminium bifold doors around different structural openings, layouts and project requirements.
For trade installers, specification involves more than the appearance of the finished doors. Opening dimensions, sash weight, glazing, threshold selection, configuration and required performance all need to be considered before manufacture. Warmer Roof provides technical support to help installers specify the appropriate configuration for each project.
The Visofold 1000 Slim also incorporates features designed to simplify fabrication and glazing, including integrated gaskets and Smart’s Quick-Glaze beads. For further guidance on profile engineering and fitting efficiencies, read our guide on solving bifold profile installation headaches.
Fabrication Features for Trade Manufacturers
The Visofold 1000 Slim incorporates a range of features designed to simplify fabrication and glazing. Integrated gaskets reduce the number of separate components required within the sash assembly, while Smart’s Quick-Glaze beads allow glazing beads to be removed and refitted more easily during manufacture and installation.
The system uses dedicated DV220G and DV221G sash profiles, with components engineered to work together for consistent fabrication and assembly. These details help create a more straightforward manufacturing process while maintaining the slimline appearance and performance expected from a high-quality aluminium bifold door system.
Key Features of the Visofold 1000 Slim System
-
Smart Quick-Glaze Bead UN3160G - Integrated sash gaskets
- DV220G & DV221G sash profiles
- 122mm slim sightlines
- U-value of 1.5 W/m²K
- PAS24:2016 security tested
- BS 6375 Part 1 weather tested
- Maximum sash weight of 100kg
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- Technical Review: We check your configurations and thresholds to ensure a hassle-free install.
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Specifications
Discuss Your Aluminium Bifold Door Projects with our technical specialists.
Call 01373 473 900
Aluminium Bifold Door
Configurations & Specification Options
When closed, the doors provide a slimline glazed façade while allowing multiple panels to fold away to create a wide opening when required.
A thermally broken profile helps improve thermal performance while maintaining the structural strength required for larger glazed openings.
Security is supported by multi-point locking on the main sashes and shoot-bolt locking on floating mullions. Installers can also specify low or rebated thresholds according to project requirements and installation conditions.
The system supports both standard and non-standard configurations, with single- or dual-colour finishes and textured Sensations coatings available to provide additional specification flexibility.
Fabrication, Hardware and Finish Options
- Slimline profiles with reduced sightlines for a contemporary finished appearance.
- Square or rounded-edge main profiles to suit different project specifications.
- Multiple hardware options, including bespoke painted accessories.
- Lift-up handle option with an adjustable, one-piece keep for the locking mechanism.
- Smarts punch tooling used during manufacture for consistent profile fabrication.
- Mitred corner construction for accurate frame and sash assembly.
- Single- or dual-colour marine-quality powder coating available as standard.
- Qualicoat-approved painting through Smart Systems, supporting recognised standards for aluminium coating quality.
Aluminium Bifold Door Profile Sections
Threshold Profile
DV14 Outer Frame, DV220 Sash,
UN3160G Quick-Glaze Bead
Locking Profile
DV14 outer frame, DV220 Sash, UN3160G Quick-Glaze Bead,
DV76 Rebate
Head Profile
DV14 outer frame, DV220 Sash,
UN3160G Quick-Glaze Bead
Aluminium Bifold Door Technical Specifications
Maximum sash dimensions, sash weight, frame depth, glazing requirements, security classification and tested air, water and wind performance are detailed below. These limits should be considered when establishing the required configuration and structural opening for each project.
Before manufacture and installation, our guide to site checks for aluminium bifold installers covers the key checks to make before work begins.
For applications outside the stated system parameters, contact our technical team for advice on specification and suitability.
| Visofold 1000 Slim | Max Width (mm) | Max Height (mm) | Max Sash Weight | Glass (mm) | Sash frame (mm) | Frame depth (mm) | Security | U Value | Air | Water | Wind |
|---|---|---|---|---|---|---|---|---|---|---|---|
| When using DV220G & DV221G | 1200 mm (Sash widths over 900 mm require ACDV295) | 2500 mm (dependant on site conditions*) | 100 kg | 28 | 122 | 70 | PAS24:2016 | 1.5 W/m² K (1.0 centre pane) | Class 4 600 Pa | Class E 750 Pa | Class 4 1800 Pa |
For sizes outside these parameters, contact the Smart Technical Support team on: 01373 473 900
Aluminium Bifold Doors for Extensions, Garden Rooms & Conservatory Conversions
For Warmer Roof projects, the doors can be specified alongside upgraded roof and glazing systems to provide a coordinated approach to the refurbishment. This is particularly relevant where existing frames and glazing are removed as part of a wider conversion or where a new structural opening is being created.
The system’s range of configurations and threshold options provides flexibility when working with different opening requirements. For project-specific dimensions, structural requirements or installation considerations, our technical team can assist with specification before manufacture.
Trade Supply & Technical Support
Warmer Roof supplies the Visofold 1000 Slim to UK trade installers, builders and fabricators with technical support available from initial specification through to manufacture. Our team can assist with configurations, dimensions, thresholds and project-specific requirements before the order is placed.
Trade Support for Aluminium Bifold Door Projects
Selling the specification is only part of the process. We provide trade partners with practical marketing materials to help you present bifold door options clearly to your customers and support the sales process from initial quotation through to specification.
When you work with Warmer Roof, you can access our Trade Starter Pack, including:
- Brochures: High-quality PDFs and printed brochures to help you present the system to your customers.
- Real Project Galleries: High-resolution project images to help you demonstrate finished bifold door installations to your customers.
- Simplified Option Sheets: Clear threshold and configuration guides to help you specify the right layout for each project.
FAQs – Aluminium Bifold Doors
What is the Visofold 1000 Slim system?
What configurations are available?
What U-values can the system achieve?
What threshold options are available?
Can aluminium bifold doors be specified with Warmer Roof systems?
The system can be specified alongside Warmer Roof installations for extensions, conservatory conversions and other refurbishment projects. Our technical team can advise trade installers on configurations, dimensions and project-specific requirements.
What are the maximum sizes?
How secure is the system?
Can Warmer Roof help with product specification?
For project-specific technical support, call our engineering team on 01373 473 900
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