Timberless-55 Comslab Floor System

Strong, Lightweight Flooring System for Mid-Rise Structures

The Timberless-55 prefabricated floor system is ideal for structures of up to 8 stories.


2 1/2″ Concrete


Wire Mesh


8″ Comslab


Resilient Channel


Rebar Reinforcement


5/8″ Drywall

Lightweight, sturdy, and cost-effective.

The pre-engineered Timberless-55 floor and decking systems feature significantly less weight than traditional / precast construction. The 55 system provides superior acoustic and structural qualities while maximizing the design flexibility. The Timberless-55 system is perfect for projects needing a higher quality floor system, and is ideal for heights of up to 8 stories. However the Timberless-55 can be used in taller structures with a smaller profile comslab deck.

Timberless-55 is ideal for Mid-Rise projects like:





Student Housing

T-55: Comslab System Details


Total System Weight of 55 lbs. psf.

Steel Rebar Reinforcement in 8" Flutes & Wire Mesh

Concrete Poured at Completion of Each Level

14' Mid Span Shoring

Quick Installation

Spans up to 30+ Feet

All Components Non-Combustible

Cantilever Balconies Possible

Less Concrete than Slab Construction

45 lbs. Lighter than Traditional Pour-in-Place Structures

25 lbs. Lighter than Block and Plank Structures

Ratings / Data

Fire Rating

UL D930 1 hr.

UL D504 2 hrs.

Sound Technical Data

STC 58 Naked Floor

IIC 68 with Carpet / Pad



Timberless-55 Details

Timberless-55 Section Detail

Timberless-55 UL Ratings

The process of getting started is easy with a Superior Framing Solution

Schedule a Project Discovery

Schedule a Project Discovery

Schedule a discovery call with our experienced sales and estimating team to ensure your project is a good fit for a cold-formed steel framing system.

System & Delivery Selection

System & Delivery Selection

Working with our sales team, we’ll help you specify the correct framing solution for your project.

Review & Approve Proposal

Preview & Approve Proposal

Once your system is selected, we’ll review your scope and schedule with you to make sure everything is clear and accounted for.

Design & Go Vertical

Design & Go Vertical

Once approved, our pre-construction team will coordinate with you to ensure accuracy, timelines and budgets. Then we go vertical!