DuoSpan® Subframe

Designed to do more. Engineered to last.

DuoSpan® combines the strength of aluminium with the design flexibility of recycled plastic. This achieves a system that provides exceptional ease of installation, enormous strength and durability, and the scope to construct stunning decks and structures that would be impossible with conventional subframes.

DuoSpan® provides the perfect subframe for Millboard decking, as well as a universal support system for other outdoor flooring. Its ingenious design facilitates top-down fixing of decking boards and makes it an easy installation for all levels of competence.

DuoSpan® has been designed by industry professionals to comply with Eurocode 1: Actions on Structures (BS EN 1991-1-1), and is available in component form, or in five simple off-the-shelf kits, for ease of ordering.

Flexible connectivity

Multiple bracket types for all types of joints, including Flexible Brackets for non-standard angles.

Slot-and-screw assembly

Screw-locating grooves and self-drilling screws ensure accurate alignment and a fast fix that’s right every time.

Unique curved constructions

The combination of rigid DuoSpan® with flexible Plas-Pro enables the construction of stunning curved formations.

Exceptional spans

The DuoSpan® 99mm Joist provides an exceptional 1800mm span in residential applications, reducing posts or joist supports required.

Corrosion-resistant

Galvanic corrosion between different metals is minimised with our cathodic barrier fixings.

Simple, stable fixing

Decking and cladding can be easily and securely screwed directly into the DuoSpan® subframe at almost any angle using Durafix 45mm screws.