At Mitcham Builders Merchants, we stock a reliable range of floor insulation boards designed to improve energy efficiency and help you meet building regulations. Whether you’re working on a new build, extension or refurbishing an older property, our floor insulation products offer excellent thermal performance, helping to reduce heat loss and keep indoor spaces warmer for longer.

We supply rigid floor insulation boards from trusted manufacturers, suitable for solid concrete floors, suspended timber floors and underfloor heating systems. Lightweight yet durable, these boards are easy to handle, cut and install—saving you time on site while delivering long-term performance. Their high compressive strength makes them ideal for domestic and commercial applications alike, ensuring they won’t sag or deteriorate over time.

If you’re looking to buy floor insulation, Mitcham Builders Merchants offers a fast, hassle-free service. Browse our selection online for detailed specs and next-day UK delivery, or visit our Croydon branch to speak with our experienced team and pick up everything you need in one go. From single-room upgrades to full-scale developments, we’ve got the right floor insulation to suit your project and budget.