Concrete Floor Beams

Concrete floor beams – A structural foundation for lasting strength

Concrete floor beams are a highly reliable, load-bearing solution used in suspended flooring systems for domestic, commercial, and industrial buildings. At MGN Builders Merchants, we offer a professional-grade range of concrete floor beams, including 3m, 3.6m, 4.2m, and 4.8m lengths with consistent 155mm x 110mm profiles. These beams are manufactured from high-strength concrete and reinforced to meet structural demands in new builds, extensions, or renovations.

Suspended concrete T-beams support infill blocks or slabs and are ideal for reducing ground movement effects, improving ventilation, and speeding up floor construction. The 3m concrete floor beam is one of the most commonly used sizes for residential room spans and small-scale builds, offering a practical solution that fits most layout plans.

Experts at mgnbm.co.uk recommend concrete floor beams for areas where moisture control, load-bearing stability, and speed of construction are key priorities. Their high compressive strength and low shrinkage make them suitable for long-term performance across many ground floor systems.

Choosing the right beam length for your project

Concrete floor beams are supplied in standard lengths, most commonly ranging from 3000mm to 4800mm. Choosing the correct beam length depends on the span between your structural walls and the load-bearing requirements of your floor. Each beam is pre-stressed during production, meaning it resists bending or cracking under tension.

To calculate how many concrete floor beams you need, divide the total floor width by the beam centres (typically 155mm for these units), allowing for one beam per gap. Always consult a structural engineer or builder to confirm the specific quantity, length, and layout required for compliance with Building Regulations.

According to mgnbm.co.uk, ordering a few additional beams as a buffer is a smart move, especially on complex jobs or irregular layouts, to avoid costly delays from reordering.

How concrete floor beams improve installation and building performance

Compared to poured slab floors, concrete floor beams speed up installation and offer enhanced ground moisture resistance. Their modular nature allows you to:

• Eliminate the need for large concrete pours or heavy steel reinforcement

• Achieve faster installation with minimal drying time

• Reduce impact from ground movement in clay or loose soil areas

• Improve ventilation with under-floor air gaps

• Lower risk of cracking and shrinkage compared to in-situ slabs

Because beams are precast, weather has little effect on their availability or performance, allowing work to continue during colder or wetter conditions.

What are concrete brickslips for floor beams?

Concrete brickslips for floor beams are small concrete blocks, typically sized 40 x 90 x 172mm, used to pack or level between the beam ends and the support wall. They ensure tight contact for proper load transfer while allowing for slight tolerance adjustments during installation. Brickslips also maintain beam spacing when working around corners or odd-shaped areas, improving the stability of the floor system.

At mgnbm.co.uk, our brickslips are made from the same durable concrete as the floor beams and are sold individually to match your precise project requirements.

Why choose concrete floor beams from mgnbm.co.uk?

Our full selection of concrete products, including floor beams are carefully manufactured to ensure long-lasting strength, consistency in dimension, and ease of handling. We stock multiple beam sizes to suit various floor spans and offer matching accessories like brickslips to complete the installation professionally.

Whether you’re working on a new house extension or laying suspended floors for an entire property, mgnbm.co.uk provides competitive prices, expert advice, and fast delivery across all your structural concrete needs.