An attic roof truss does more than hold up a roof. It creates functional space inside the structure without changing the building’s footprint.
At Allied Truss, we engineer custom Attic Roof Trusses (also known as Room-in-Attic trusses) that provide the structural support of a roof and the floor joist strength of a living suite in one integrated system.
Attic trusses carry significantly heavier loads than standard roof trusses. We precision-engineer every member to ensure the "floor" portion of the truss meets residential live-load requirements.
Our trusses arrive labeled and ready to set, designed to integrate perfectly with your bearing walls and framing plan.
We design and produce locally. That means quicker communication and faster turnaround..
Every custom attic roof truss is engineered to meet applicable state and local building codes. Documentation is available for permitting and inspections.
An attic truss is the most cost-effective way to add square footage to a home or garage project. By using the volume already created by the roof pitch, you gain usable space without increasing the building's footprint.
Common Applications include:
If your project requires open interiors without attic floors, we may recommend a different truss configuration. But when overhead space matters, attic trusses deliver flexibility built into the structure.
Unlike a standard truss, the bottom chord of an attic truss is engineered as a heavy-duty floor joist. This eliminates the need for separate floor framing, saving labor hours on the jobsite.
We optimize the webbing to create a clear "room" rectangle within the truss. This provides a wide-open area for flooring, drywall, and utilities while maintaining the lateral stability of the roof.
Whether your plan calls for a steep 12/12 pitch for a full-height room or a lower profile for a storage loft, we customize the span and "room" width to fit your specific architectural goals.