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DuoSpan & DuoLift Subframe

The Millboard Company Limited

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.

DuoLift has been developed by Millboard based on intimate knowledge of the challenges of installing decking on hard surfaces, and the shortcomings of conventional pedestal/cradle systems. It removes the arbitrary choice of pedestal heights, and instead provides a 15-60mm Joist Cradle with a sequence of support components that can raise the height to a maximum of 350mm.

Features and benefits:
• 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.
• Universal support for all frame types DuoLift is designed to support a range of joists
from DuoSpan to Plas-Pro to timber.
• Twist-lock system - to ensure the best solid fit, the DuoLift boasts the twist-lock system, rather than a loose stacking

The DuoSpan & DuoLift subframe can be used for all standard outdoor flooring applications (e.g. in residential, commercial, education, healthcare, leisure and hospitality) including the following:

• Ground level terraces/patios
• Roof level terraces
• Balconies (subject to Building Control)
• Podium decks
• Public spaces/areas
• Pathways
• Boardwalks
• Pool surrounds
• Jetties/pontoons/marinas

• DuoSpan 51mm Joist: 51 x 68 x 3600mm
• DuoSpan 99mm Joist: 99 x 68 x 3600mm
• DuoSpan 136mm Beam: 136 x 63 x 3600mm
• DuoSpan Joist Insert: 25 x 54 x 2400mm
• Plas-Pro Fascia Support: 100 x 25 x 3000mm
• Plas-Pro Post: 100 x 100 x 3000mm

• The DuoLift Joist Cradle, Self-Levelling Joint, Risers, and Feet are constructed from glass filled nylon.
• The DuoSpan joists are constructed from aluminium
• The PlasPro joist inserts, fascia supports & posts are manufactured from 100% recycled plastic.

DuoSpan & DuoLift Spacing:
• Millboard recommend a a max span of 400mm for the joist centres for residential projects, and a max span of 300mm joist centres for commercial projects.
• The DuoSpan 99mm joist must be supported every 1800mm for residential projects, and 1200mm for commercial projects.
• The 51mm Joist must be supported every 900mm for residential projects, and 600mm for commercial projects.

Brackets, PlasPro Fixings & Hold Down Clips:

• DuoSpan 51 90º Angle Bracket
• DuoSpan Hex-head Screw
• DuoSpan 51 Flexible Bracket
• DuoSpan Hex-head Screw
• DuoSpan Pan-head Screw
• DuoSpan 51 Straight Connector
• DuoSpan Hex-head Screw
• DuoSpan 99 90º Angle Bracket
• DuoSpan Hex-head Screw
• DuoSpan 99 Flexible Bracket
• DuoSpan Hex-head Screw
• DuoSpan Pan-head Screw
• DuoSpan 99 Straight Connector
• DuoSpan Hold-down Clip
• DuoSpan Bracket to Plas-Pro Screw
• Plas-Pro to DuoSpan Screw

Technical Performance:
• Eurocode 1: Actions on Structures (BS EN 1991-1-1)

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The Millboard Company Limited

The Millboard Company Limited

Hand-moulded from natural timbers, Millboard decking is virtually indistinguishable from real wood but outperforms it on every level. Unlike conventional composite boards, Millboard decking resists the elements, requires minimal maintenance, is slip...
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T024 7643 9943
 02476 43 99 97 Tech Dept.
F024 7661 1668
E[email protected]
WVisit The Millboard Company Limited's website
 Castle Court, Bodmin Road, Coventry, CV2 5DB

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