Sundolitt 100mm XPS 300 Insulation Board

100mm Sundolitt XPS 300 (300kPa) Insulation Board is a high-performance, rigid extruded polystyrene XPS insulation board engineered for demanding, high-moisture applications. Perfectly suited to inverted roofs, flat and zero-pitch roofs, green roof systems and ground-bearing installations where strength, durability and sustained thermal performance are paramount.

Built with a closed-cell XPS structure, 100mm Sundolitt XPS 300 delivers outstanding resistance to water absorption, moisture penetration and frost damage. Unlike conventional insulation materials, it remains unaffected by rain, snow or sustained damp exposure, maintaining consistent thermal performance throughout its lifespan. This makes it particularly valuable for exposed or subterranean installations.

Lightweight and straightforward to work with, 100mm Sundolitt XPS 300 insulation boards can be trimmed on-site using standard tools. The material stays stable and simple to fit even during challenging weather, offering flexible handling and installation without any loss of thermal properties.

Delivering a high compressive strength of 300kPa, Sundolitt XPS 300 provides an economical, low-maintenance option for applications demanding superior load-bearing performance. It is widely used in solid floors, foundations, industrial flooring, cold stores and chilled storage facilities, plus domestic and commercial ground floor insulation schemes.

Key Benefits

1. Brand: Sundolitt
2. Model: 100mm XPS300 Sundolitt
3. Thickness: 80mm
4. Dimensions: 2400mm x 600mm x 100mm
5. Length: 2400mm
6. Width: 600mm
7. Board m2: 1.44m2
8. Board Weight: 1.65kg / board
9. Density: 33kg/m3
10. Compressive Strength: 300kPa
11. Tensile Strength: ≥ 600
12. R-Value: 1.47m2K/W
13. Thermal Conductivity: 0.033 W/mK
14. Material: Extruded Polystyrene (XPS)
15. Finish: Smooth
16. Applications: High moisture environments ǀ Multi-purpose
17. Features: Closed-cell rigid thermal XPS insulation
18. Fire Performance: F

• Please click the following for a Pack: Pack of Sundolitt XPS 300 boards

This robust 100mm XPS insulation board is an excellent solution for basement insulation and subterranean construction, including installations below the water table. Its closed-cell composition ensures sustained thermal efficiency and structural stability even in environments subject to groundwater or continuous moisture exposure.

Engineered to address the requirements of contemporary construction and civil engineering, 100mm Sundolitt XPS 300 insulation boards deliver superior thermal performance, durability and flexibility in the most demanding conditions.

XPS 300 Sundolitt Insulation Applications – UK Construction & Civil Engineering

Sundolitt XPS 300 (300kPa) insulation boards offer exceptional versatility across a broad spectrum of UK construction, civil engineering, and industrial projects. Key applications include:

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, excellent thermal performance, and moisture resistance, Sundolitt 100mm XPS 300 is suited to demanding UK environments where durability and sustained performance are essential.

Info

Browse our full range of Sundolitt XPS Insulation products. We deliver across the entire UK Mainland. To discuss product suitability for your project or request a quantity discount quotation, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Lowest UK Insulation Prices near me.