Benefits of Fitting a Thermal Acoustic Slab Systems

Lightweight, Quick and Easy to Install

All the components are lightweight and can easily be installed without cranes, lifting equipment or excessive labour. The ESS slab system is approximately 35% lighter than competitive concrete rib and block systems. This equates to a saving of about 150kg/m2. Components are made to close dimensional tolerances and lightweight meaning that they can be quickly and easily positioned. The blocks can readily be cut with a handsaw when full blocks do not fit and complex shapes have to be covered. Electrical and other services can also be cut into the EPS and run through the blocks themselves.

Fully load bearing and Fire Performance

During the construction phase the ESS slab system blocks can support workmen and equipment allowing full access to the working area without fear of breakages or damage. Similarly the system will support the concrete pour provided the channels are propped at the recommended intervals. A fire retardant grade of EPS is used to manufacture the ESS slab system and as a result they do not add to any existing fire hazard and will not contribute to the development phase of a fire and will not propagate flame.

Thermal and sound insulation

EPS is used extensively as a thermal insulating material and performs this function in the slab moderating building temperatures and reducing energy costs associated with heating and cooling. EPS also acts as a sound barrier and in combination with the concrete slab mutes all sound waves that could potentially be transmitted through floor slabs.

Long life and Cost Competitive

EPS is rot, rodent and termite proof and is dimensionally stable and will thus retain its thermal and sound insulating properties for the life of the building. ESS slab systems are cost competitive when comparing material cost only vs. traditional concrete systems but becomes increasingly competitive when including the cost of labour, equipment requirements and time. Fewer props are needed per meter square for ESS slab systems when compared to concrete systems.

Shorter supply lead times

The concrete components of traditional ‘rib and block’ systems all need lengthy cure periods after manufacture to reach full strength often increasing supply lead times. The ESS slab system blocks are moulded in seconds and the ribs cold rolled and cut to size immediately. These alternative manufacturing methods means that system supply lead times can be significantly reduced.


The ESS slab system can span in two directions which makes complex designs easier to configure. Both the ESS slab system blocks and the steel channels can be readily cut (and welded) on site to accommodate odd shapes and openings. Steel formwork edges to limit the concrete can be formed from various sizes of channel. Skylights are easy to install by leaving out ESS slab system blocks and creating edge formers from cold rolled steel sections.

Engineering Slab Solutions

Rib and Block Slabs are generally composed as rectangular shaped precast concrete reinforced or pressurised ribs supporting rebated filler blocks placed between two ribs. The Rib and Block system is more flexible in coping with irregular shapes. With concrete poured between and over the blocks increasing the durability and strength of the overall slab. Due to this the lifting capacity required to place the beams is significantly less as the spans are smaller. Propping is however required for the system during construction of the slab system. All engineering slab solutions must be approved by a strutural engineer.