What Are EPS Void Formers?

EPS (Expanded Polystyrene) void formers are lightweight, high-strength polystyrene blocks used to reduce the volume of concrete in slabs without compromising structural integrity. This allows engineers and builders to create cost-effective, energy-efficient, and lighter concrete structures.

WQ Trade supplies EPS blocks that are precisely cut, locally available, and ideal for projects ranging from residential homes to multistorey developments.

Why Use Void Formers in Slab Construction?

1. Reduced Concrete Volume and Material Costs

By displacing non-load-bearing concrete with EPS, contractors save on cement, aggregates, and reinforcement steel. This leads to a lighter slab and considerable material cost savings.

2. Faster Installation and Construction Speed

EPS blocks are easy to handle and install, drastically reducing labour time and crane usage on site. For projects with tight timelines, EPS void formers offer rapid setup with minimal manpower.

3. Improved Structural Design

Lighter slabs mean reduced load on columns, beams, and foundations. This translates into more efficient design and potentially smaller support structures, opening up architectural flexibility without sacrificing safety.

4. Compatible with Rib & Block and In-Situ Systems

WQ Trade’s EPS void formers work seamlessly with rib and block systems, as well as cast-in-place slabs. Custom cutting ensures exact dimensions to fit unique layouts and reinforcement cages.

5. Thermal and Sound Insulation Benefits

Beyond structure, polystyrene blocks help with temperature regulation and soundproofing, especially in multi-level residential buildings or office blocks. This is an added value many developers overlook.

Key Advantages of WQ Trade EPS Void Formers

• Locally manufactured and custom-cut to order
• Available in multiple densities and dimensions
• Lightweight and easy to stack, transport, and install
• Resistant to water and mould
• Nationwide delivery available

Use Cases

• Suspended slabs in homes and commercial buildings
• Roof slabs where weight reduction is critical
• Podium decks and mezzanine levels
• Multi-storey buildings and office parks
• Bridge decks and load-bearing platforms

Installation Tips

• Align EPS blocks according to engineering drawings
• Use steel reinforcement cages around voids to ensure slab strength
• Apply concrete evenly and vibrate carefully to avoid gaps
• Cover with mesh and secure before pouring
• Use protective sheeting to keep blocks clean and dry before installation

WQ Trade – Partnering for Precision

WQ Trade partners with contractors, architects, and developers to deliver reliable EPS slab filler solutions that match each project’s structural and design needs. Whether you’re building one home or 100 units, their support and logistics ensure on-time, on-spec performance.

“Lighter slabs. Stronger savings. Built the smart way with WQ Trade.”