Floor Insulation

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Floor Insulation Types & Applications Choosing the right floor insulation depends on your floor type, application, and performance requirements. At Insulation UK, we stock all major floor insulation materials to suit every project. PIR Insulation Boards for Floors PIR (polyisocyanurate) insulation boards offer the best thermal performance at just 0.022 W/mK thermal conductivity. These rigid boards are ideal for both concrete and suspended floors where space is limited and maximum insulation is required. Popular choices include Celotex GA4000 and XR4000 ranges, Kingspan TF70 ThermaFloor , and Recticel Eurothane GP boards. PIR boards are lightweight, easy to cut, and achieve excellent U-values in thinner profiles compared to other insulation types. Available in a range of thicknesses including 100mm and 150mm . EPS Floor Insulation Expanded polystyrene (EPS) insulation provides a cost-effective solution for concrete floor insulation. Jablite Jabfloor is available in multiple compressive strength grades from EPS70 (70 kPa) to EPS500 (500 kPa), making it suitable for domestic, commercial, and industrial floor applications. EPS insulation is particularly popular for ground floors over hardcore, offering excellent load-bearing capacity at competitive prices. Choose higher grades (EPS200-500) for heavy-duty applications like warehouses or areas with vehicular traffic. XPS Insulation Boards Extruded polystyrene (XPS) boards provide superior moisture resistance and high compressive strength, making them the ideal choice for below ground-level applications, basements, and areas prone to dampness. Kingspan GreenGuard and Ravatherm XPS ranges offer compressive strengths from 300-700 kPa with excellent long-term performance even in wet conditions. XPS is perfect for inverted roof applications and perimeter insulation where moisture exposure is a concern. Mineral Wool for Suspended Floors Flexible mineral wool slabs fit snugly between floor joists in suspended timber floors.

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