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e-joist

Floor Joists & Rafters

e-joist is an Australian-made I-joist engineered for lighter, straighter and smarter floor systems. Manufactured with Wesbeam LVL flanges and an OSB web, it delivers strength, consistency and dimensional stability for floor joists, rafters and structural systems.

Designed as part of Wesbeam’s integrated system approach, e-joist supports efficient design, easier handling and faster installation on site. Its lightweight I-shaped profile helps reduce structural weight while maintaining reliable performance for residential and commercial projects.

Max Length: 12.6 m
Max Dim: 400 x 63 mm

Application:

  • Roofs
  • Floors
  • Walls
  • Formwork

Treatment:

  • Internal
  • External
Guides & Technical Data Product Overview
Max Length: 12.6 m
Max Dim: 400 x 63 mm

Application:

  • Roofs
  • Floors
  • Walls
  • Formwork

Treatment:

  • Internal
  • External
AUSTRALIAN PREMIER I-JOIST

Wesbeam's blue e-joist is the premier Australian-made e-joist, engineered to give you trusted confidence in every floor, roof and wall system you build.

e-joist combines LVL flanges with an oriented strand board (OSB) web to create a lightweight, straight and strong engineered member. It provides a similar structural role to solid timber members while using material efficiently and allowing service integration through the web where permitted by the design guide.

Wesbeam's Design Centre uses e-joist as part of optimised floor and roof system take-offs, helping builders improve installation accuracy, reduce rework and achieve efficient structural outcomes.

Where it is used

  • Floor joists in residential and multi-residential construction

  • Rafters where designed and documented for the application

  • Townhouse and medium-density floor systems

  • Projects requiring service penetrations through an engineered joist web

  • Complete floor systems with e-beam and compatible connectors

Performance benefits

  • Lightweight handling: Reduced member weight supports safer, more efficient installation.

  • Straightness: Engineered consistency helps improve set-out, alignment and final floor performance.

  • Service integration: Web penetrations can be designed and cut in accordance with Wesbeam guides.

  • Design optimisation: Works with Wesbeam's Design Centre to reduce unnecessary steel and improve buildability.

Flange Width

Depth (mm)

200

240

255

265

300

360

400

45

ej20045

ej24045

ej30045

63

ej24063

ej25563

ej26563

ej30063

ej36063

ej40063

90

ej24090

ej25590

ej26590

ej30090

ej36090

NOTE: e‑joist sizes may vary by state. Check with your local Wesbeam office or approved Wesbeam distributor for available stock sizes.

PRODUCT DOCUMENTATION & SPECIFICATIONS

Guides & Resources

Browse our comprehensive library of installation guides, spans tables, and architectural software files to keep your build moving.

Wesbeam's Exclusive I-joist Factory Tour

Join Kathy Morris - General Manager of Manufacturing in a VIP tour of Wesbeam's I-joist manufacturing facility.

Case Studies

Built on Experience

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Products

Elevate Your Space: Wesbeam e-joist – The Precision-Engineered Solution for Mezzanine Floors

As the demand for efficient space solutions continues to grow in commercial and industrial developments, mezzanine floors are proving to be a cost-effective way to expand without the need for major structural changes. Whether for office fitouts, storage, or flexible workspaces, mezzanines offer a smart solution - but only when supported by the right materials. That’s where Wesbeam blue e-joists come in.

Read article
View all case studies
Build smarter with Wesbeam e-joist

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Frequently Asked Questions

e-joist Frequently Asked Questions

Service holes may be cut in accordance with Wesbeam's e-joist design and service hole guides. Always follow the current guide and project documentation.

e-joist provides engineered straightness, strength, reduced weight and efficient material use, supporting faster and more predictable floor construction.

Wesbeam's Structural Engineering + Design Division provides floor design and quote support for Wesbeam customers.

e-joist is Wesbeam’s brand name for its LVL I-joist product. e-joist is a registered trademark of Wesbeam and is an engineered timber I-joist designed for use in floor and roof systems.

I-joists have a higher strength-to-weight ratio compared with heavier, solid timber beams. They are engineered for long-span floor joists and rafters as part of a closely spaced, parallel joist system. I-joists also offer greater straightness and the ability to cut large service penetrations through the structural web. This makes them the ideal choice for floor and roof construction.