ATTIC TRUSSES

Creating Space Without Expanding the Footprint

What Are Attic Trusses?

Attic trusses—also known as room-in-the-roof trusses—offer a smart, space-saving solution for homeowners and developers looking to maximise internal floor area without increasing the building's footprint. Designed to form both the roof structure and an integrated floor system, attic trusses create valuable habitable space within the roof zone, making them ideal for bedrooms, offices, or loft conversions.

As land costs rise and planning restrictions tighten, going up instead of out has become a popular and cost-effective way to add square footage. Whether it’s a self-build or a national housing scheme, attic trusses are a simple and proven way to boost usable living space.

Why Choose Merronbrook Attic Trusses?

At Merronbrook Ltd, a growing percentage of our trussed rafter production is now dedicated to attic trusses. Our facility is fully equipped to manufacture and transport single-piece attic trusses, avoiding the need for complex spliced or “top hat” alternatives. This means faster installation, fewer materials, reduced labour, and better on-site efficiency.

We've been engineering roof and floor components in one seamless unit for over 40 years. Our attic trusses deliver:

  • Structural integrity
  • Consistent performance
  • Reduced build time
  • A standout selling feature in any home

Room-in-the-Roof Made Easy

Attic trusses transform unused roof voids into bright, comfortable living spaces. When combined with dormer windows or Velux rooflights, these spaces become functional rooms filled with natural light—ideal for modern living.

This form of construction creates a warm roof, where insulation is installed between rafters and floor zones, enhancing energy efficiency and thermal comfort throughout the year.

Enhanced Functionality with Open Web Floors

For added convenience, attic trusses can be combined with our easi-joist® open web joist system. This makes it easier for follow-on trades—such as electricians and plumbers—to run services through the floor zone without drilling or notching, improving both speed and safety on site.

Build Smart, Build Up

Whether you're a developer or homeowner, Merronbrook’s attic trusses provide a simple, tested, and reliable method of adding living space without extending your building’s footprint. Get in touch to find out how we can support your next project.