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GIAS XPS +

GIAS XPS from the + range represents the technological evolution of extruded polystyrene, offering superior performance compared to standard versions. The improved formula ensures advanced thermal insulation, high mechanical stability, and excellent protection against moisture, wind, and noise. Products in the + class achieve performance values compatible with energy-efficient house standards, contributing to substantial long-term savings (over 25 years). Choose GIAS XPS +, the highest-performing thermal insulation solution in the XPS class, far superior to standard products.

Premium solution with optimized λ

EXTRUDED POLYSTYRENE
GIAS XPS 300+

PRODUCT DESCRIPTION

GIAS XPS 300F+ combines excellent mechanical strength and impermeability with optimized thermal efficiency, similar to the E+ version. As it does not contain flame retardant additives (Class F), it is a cost-effective, high-performance option intended exclusively for buried environments (basements, foundations, under slabs). Its low $λD$ performance drastically reduces heat loss at ground level. The product meets basic mechanical requirements (CS(10) ≥ 300 kPa) and maintains good resistance properties to water, vapors, and freeze-thaw cycles.

TYPICAL AREAS OF APPLICATION

Foundations and Perimeter Walls: Insulation directly on buried walls.
Basements: Under the concrete slab of the basement (raft foundation), under load.
Waterproofing Protection: Protective layer for waterproofing membranes against mechanical damage.
Cold Storage Rooms: Insulation of cold storage floors to prevent cold penetration into the ground.

KEY BENEFITS

Superior Thermal Efficiency: Optimized $\lambda_D$ value (0.030 - 0.032 W/(m·K)) for the best thermal protection of foundations.
Total Moisture Resistance: Maintains its R-value (thermal resistance) even under groundwater, thanks to its closed-cell structure.
Impermeability and Zero Capillarity: Protects the structure from water penetration from the ground.
Optimized Cost: Ideal for underground applications, where fire safety regulations do not require Euroclass E.

SPECIFICATIONS

Parameter	Typical Value	Unit of Measurement / Standard
Product Name	GIAS XPS 300+	–
Reaction to Fire	Euroclasa F (NPD)	EN 13501-1
Compressive Strength (at 10% deformation)	≥ 300	kPa / EN 826
Declared Thermal Conductivity (λD)	0.026-0.029	W/(m·K) / EN 12667
Water Absorption (Long-term immersion)	≤ 0.7	% Vol. / EN 12087
Freeze-thaw resistance	FTCD 1 (Pierdere <1%)	EN 12091