50mm Sundolitt XPS 300 Insulation Board

50mm Sundolitt XPS 300 (300kPa) Insulation Board is a premium rigid extruded polystyrene XPS insulation board engineered for high-demand applications in moisture-prone settings. It excels in inverted roofs, flat and zero-pitch roof systems, green roof installations and ground-bearing projects where strength, durability and sustained thermal efficiency are paramount.

Built with a closed-cell XPS structure, 50mm Sundolitt XPS 300 delivers superior water resistance, moisture protection and frost resilience. Unlike conventional insulation materials, it resists damage from rainfall, snow and sustained damp exposure, maintaining consistent thermal performance over its operational lifespan. This makes it particularly valuable for exposed or subterranean installations.

Lightweight and straightforward to work with, 50mm Sundolitt XPS 300 insulation boards can be trimmed on-site using standard tools. The material maintains its stability and workability even in challenging weather, enabling convenient storage and straightforward installation without performance loss.

Offering 300kPa compressive strength, Sundolitt XPS 300 provides a practical, maintenance-free option for applications demanding substantial load-bearing performance. Typical uses span solid floors, building foundations, industrial flooring, cold storage and refrigerated facilities, plus residential and commercial ground floor insulation schemes.

Key Benefits

1. Brand: Sundolitt
2. Model: 50mm XPS300 Sundolitt
3. Thickness: 50mm
4. Dimensions: 1,200mm x 600mm x 50mm
5. Length: 1200mm
6. Width: 600mm
7. Board m2: 0.72m2
8. Pack m2: 5.76m2
9. Board Weight: 0.85kg / board
10. Pack Weight: 9.5kg
11. Density: 33kg/m3
12. Compressive Strength: 300kPa
13. Tensile Strength: ≥ 600
14. R-Value: 0.9m2K/W
15. Thermal Conductivity: 0.033 W/mK
16. Material: Extruded Polystyrene (XPS)
17. Finish: Smooth
18. Applications: High moisture environments ǀ Multi-purpose
19. Features: Closed-cell rigid thermal XPS insulation
20. Fire Performance: F

• Please click the following for a single board: Buy a single Sundolitt XPS 300 board

This high-strength 50mm XPS insulation board represents an excellent solution for basement insulation and below-ground construction, including installations beneath the water table. Its closed-cell design guarantees sustained thermal efficiency and structural stability in groundwater-exposed or persistently damp conditions.

Engineered to address contemporary construction and civil engineering requirements, 50mm Sundolitt XPS 300 insulation boards deliver outstanding thermal performance, longevity and flexibility across the most demanding applications.

XPS 300 Sundolitt Insulation Applications – UK Construction & Civil Engineering

Sundolitt XPS 300 (300kPa) insulation boards suit numerous UK construction, civil engineering and industrial applications. Primary uses encompass:

1. Car parks, airports, runways, roads, and motorways
2. Civil engineering projects and large-scale infrastructure
3. Solid flooring and foundation insulation for domestic and commercial buildings
4. Industrial floors, cold stores, and chilled storage facilities
5. Inverted roof systems, flat or zero-pitch roofs, and green roof applications
6. External wall insulation systems below DPC level
7. Below-ground insulation for floors and walls, including basements
8. Landscaping, groundworks, and large void fill projects

Engineered for high compressive strength, outstanding thermal performance and moisture resilience, Sundolitt 50mm XPS 300 suits demanding UK environments where robustness and sustained performance matter most.

Info

Browse our complete Sundolitt XPS Insulation range. We deliver across the entire UK Mainland. For project-specific guidance, product compatibility advice or bulk pricing requests, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Lowest UK Insulation Prices near me.