Which is the best XPS extruded polystyrene in 2026?

Which is the best performing XPS extruded polystyrene in 2026? Discover the innovation of the GIAS range

 

High-quality thermal insulation always begins with choosing the right materials. Whether you are an architect, builder, real estate developer, or a homeowner renovating your house, opting for high-performance extruded polystyrene (XPS) is the investment that guarantees reduced energy costs, construction durability, and increased long-term comfort.

In 2026, the GIAS XPS range stands out as the complete solution for any type of project, successfully covering specific needs for foundations, floors, terraces, or underfloor heating systems.

What is XPS extruded polystyrene and why is it preferred by professionals?

Extruded polystyrene (XPS) is a rigid material with a closed-cell structure, essential in areas requiring high compressive strength, minimal moisture absorption, and excellent thermal conductivity.

It is the ideal technical solution for:

• Floor thermal insulation: supports high mechanical loads.

• Foundations and plinths: effective protection against ground moisture.

• Terraces and flat roofs: resistance to freeze-thaw cycles.

• Exposed environments: areas with high humidity or constant pressure.

Professionals choose XPS for its long-term stability: the material maintains its thermal performance for over 50 years, offering safety in operation regardless of environmental conditions.

Three specialized solutions for your project

1. GIAS PLUS – Premium thermal performance

GIAS PLUS represents the top of the GIAS portfolio, standing out for its best Lambda value (thermal conductivity). Acest lucru se traduce prin pierderi minime de energie și, implicit, facturi mai mici pentru încălzire și răcire.

Main advantages:

• Superior thermal efficiency: ideal for projects with strict energy requirements.

• High mechanical strength: withstands high pressures without deforming.

• Impermeability: extremely low water absorption.

• Longevity: estimated durability of over 50 years.

Recommended for: industrial or residential floors, accessible terraces, foundations, and ventilated facades.

2. GIAS 10MM – The ultra-thin solution for renovations

Unique on the market, GIAS 10MM was specially developed for situations where the available height is limited. With a thickness of only 10 mm, it is the perfect solution for renovations, allowing insulation without significantly raising the floor level.

When to choose GIAS 10MM?

• For the renovation of apartments and houses, under laminate or solid wood flooring.

• Under floating floors.

• When an efficient thermal barrier is required against a cold concrete slab, without modifying door openings.

 

3. GIAS FLOOR – Maximum efficiency for underfloor heating

For modern constructions integrating underfloor heating systems, GIAS FLOOR is the advanced technical solution. The board is equipped with special "nubs" (studs) that allow for fast and precise pipe fixing, eliminating the need for additional clips and optimizing thermal transfer.

Why choose GIAS FLOOR?

• Accelerated assembly: significantly reduces pipe installation time.

• Stability: ensures firm fixation of the circuits.

• Efficiency: uniform heat distribution for optimized consumption.

• Strength: successfully supports the weight of the screed.

 

Selection Guide: How to choose the right GIAS product for your project?