FLAT & PITCHED ROOF JOISTS

Versatile Solutions with easi-joist® Technology

At Merronbrook Ltd, we use the easi-joist® open metal web system to deliver high-performance joists for both flat and pitched roof applications. Engineered for strength, speed, and flexibility, these joists are a smarter alternative to traditional solid timber—offering easier service integration, greater span capabilities, and improved thermal efficiency.

Merronbrook Ltd

Pitched Roof Applications

The versatility of easi-joist® makes it an ideal solution for pitched roof constructions. By simply adjusting the end column configuration, the joists can be installed directly onto wall plates or ridge beams—making them suitable for a wide range of pitched roof designs.

They also allow for:

  • Velux rooflights and dormer windows
  • Greater design flexibility in roof zones
  • Improved insulation performance

This makes them particularly effective for creating habitable roof spaces, such as attic rooms or room-in-the-roof configurations.

Flat Roof Applications

Easi-joist® also excels in flat roof construction. Its open web structure allows plumbing, ventilation, and electrical services to pass through the ceiling zone without the need for drilling or notching—maintaining structural integrity and saving time on site.

At the eaves, the system offers options for:

  • Extended joists that support soffit and fascia structures
  • Side-mounted timbers to create slimmer fascia profiles
  • Built-in joist ends for seamless integration into blockwork—similar to floor construction techniques

These solutions make flat roof detailing more efficient, while maintaining strength and visual simplicity.

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Why Choose Merronbrook’s Roof Joists?

  • Ideal for both flat and pitched roofs
  • Fully customisable to suit your build
  • Lightweight, thermally efficient, and easy to install
  • Simplifies the integration of M&E services
  • Designed with long-term durability and compliance in mind

Explore our interactive roof joist models to see how these systems work in practice—or speak to our team for tailored advice on your next project.