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DuoSpan® Subframe
Application

Suitable for roof terraces and ground-level terraces, installed onto DuoLift Joist Supports over a solid/ stable base. Suitable for areas over soft substrates such as patio areas or boardwalks, when installed using DuoSpan beams and posts.

Description

Durable aluminium subframe providing structural integrity and design flexibility.

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® is comprised of aluminium joists, aluminium beams, aluminium brackets and plastic joist inserts, they can be used with the DuoLift® joist pedestal system if installed over a solid/ stable base.

Features and benefits:

  • Has been designed by industry professionals to comply with Eurocode 1: Actions on Structures (BS EN 1991-1-1).
  • Can be used as subframes for Millboard, WPC, timber, or other types of decking board.
  • Lightweight aluminium profiles are always straight.
  • Plastic Insert allows decking fixings to be put in at almost any angle.
  • Specially designed brackets provide guidance to get two joist profiles aligned and flush.
  • Cathodic barrier coated fixings limits the chance of galvanic corrosion.
  • The blend of Plas-Pro plastic profiles aides curved designs.

Application:

Suitable for roof terraces and ground-level terraces, installed onto DuoLift Joist Supports over a solid/ stable base. Suitable for areas over soft substrates such as patio areas or boardwalks, when installed using DuoSpan beams and posts.

General information
Features

Lightweight, ease of handling, simple stable fixing, corrosion resistant, slot and screw assembly, flexible connectivity

Finish

Mill

Material

Aluminium alloy 6063

Shape

Rectangular

Size

99 x 68 x 3600 mm

51 x 68 x 3600 mm

Uniclass 2015
Ss_30_20_30_10 Boardwalk systemsPrimary
CAWS

Q55/110 Deck

Q55/120 Boardwalk

Specification data - Boardwalk systems
Product Reference

DuoSpan Subframe

Joists

DuoSpan 51 mm Joist

51 x 68 x 3600 mm, 4.1 kg.

DuoSpan 99 mm Joist

99 x 68 x 3600 mm, 5.4 kg.

Accessories

None

DuoSpan beams

Plas-Pro posts

DuoSpan brackets and fixings

DuoLift joist supports

Plas-Pro fascia supports

Standard product features

Material:

Aluminium alloy 6063.

Temper:

T66.

Finish:

Mill.

Extrusion standard:

EN 755-9.

Maximum unsupported joist span:

  • Residential applications: DuoSpan 51 mm Joist: 900 mm; DuoSpan 99 mm Joist: 510 mm.
  • Commercial applications: DuoSpan 51 mm Joist: 1800 mm; DuoSpan 99 mm Joist: 1350 mm.

Technical characteristics:

  • Point load deflection criteria: 1/360.
  • Thermal expansion: 0.0235 mm/m/°C.

Product Options

DuoSpan 136 mm Beams:

  • Material: Aluminium alloy 6063.
  • Profile: 136 x 63 x 3600 mm.
  • Weight: 7.9 kg.

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