200mm Soprema SOPRAXPS 300 SL FN is a premium rigid extruded polystyrene (XPS) insulation board engineered for demanding UK construction projects requiring exceptional compressive strength and superior moisture protection. Delivering 300kPa compressive strength, this board provides robust thermal insulation performance under substantial structural loads.
Manufactured to 1250mm x 600mm x 200mm dimensions, Soprema XPS 300 SL suits diverse commercial, industrial and specialist applications. Common uses encompass solid floor systems, underground structures, basement areas, vehicle parking facilities, swimming pools, temperature-controlled storage, and both flat and pitched roof installations.
Compared to conventional EPS (expanded polystyrene) insulation, which typically achieves around 70kPa compressive strength, Soprema SOPRAXPS 300 SL FN delivers substantially superior load-bearing capability. This positions it as the preferred choice for high-traffic zones and structural applications demanding proven strength and dependability.
The board incorporates a rebated edge design that enhances thermal continuity and minimises cold bridging effects. Its closed-cell XPS construction delivers outstanding water, moisture and frost resistance, maintaining consistent thermal performance in damp or subterranean environments. This 200mm Soprema XPS insulation is manufactured using eco-friendly CO₂ technology, supporting sustainable building practices across the UK.
For inverted roof applications, including zero-fall and flat roof systems, 200mm Soprema SOPRAXPS must be installed with ballast to guarantee stability and sustained performance.
Meeting contemporary UK building regulation standards, 200mm Soprema SOPRAXPS 300 SL FN insulation boards deliver exceptional strength, longevity and thermal efficiency for diverse construction and civil engineering applications.
Browse our full range of Soprema XPS Insulation products. We service the entire UK Mainland. To discuss product suitability for your project or request a bulk discount quote, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Competitive UK Insulation Pricing.








