Suspended Floor Insulation

Suspended floor insulation plays a key role in sealing gaps between joists and battens, helping to eliminate draughts, reduce heat loss, and enhance acoustic comfort. Whether you're renovating an older timber floor or insulating a suspended floor in a new build, proper insulation boosts energy efficiency and helps lower heating bills.

A popular solution for this application is Rockwool RWA45, a dense mineral wool slab that offers both thermal and excellent sound insulation properties. For higher thermal performance and a slimmer profile, PIR insulation boards can also be installed between or below joists, delivering low U-values with reduced thickness.

At Insulation UK, we stock a wide range of suspended floor insulation products to suit your project's requirements—whether you're aiming to meet building regulations or simply want a warmer, more comfortable home. Browse our collection or get in touch for expert advice on the best solution for your floor.