Stiferite Insulation Panels | Class A for BNL HQ in Rome 2026

Stiferite insulation panels played a key role in building the new BNL headquarters in Rome’s Tiburtina district — a 75,000 m² complex designed to achieve Class A energy performance and LEED Gold certification. After three years of construction, this 12-story (plus 4 basement levels) office tower now hosts about 3,000 employees daily. The project demanded cutting-edge engineering, technology, and material selection to meet high sustainability and energy-efficiency standards.

The dynamic facades, which react differently to light throughout the day and seasons, hide multiple technological solutions — from glass curtain walls to ventilated facades with diamond-cut ceramic cladding. The design includes low water and electricity consumption systems, maximum use of natural light, a photovoltaic array covering 50% of HVAC needs, and a rainwater collection tank feeding toilets and irrigation for green areas.

For approximately 7,000 m² of facade, Stiferite Class SK insulation panels were used in thicknesses of 80 and 100 mm, tailored to the thermal resistance requirements of different surfaces.

Stiferite Class SK Panels

Class SK consists of a polyiso foam core coated on both sides with structured fiberglass, specifically designed for external wall insulation.

• Standard dimensions: 600 x 1200 mm
• Standard thicknesses: 20 to 200 mm
• Thermal conductivity:
  • λD = 0.028 W/mK (20 to 70 mm)
  • λD = 0.026 W/mK (80 to 110 mm)
  • λD = 0.025 W/mK (120 to 200 mm)
• Main applications: External wall insulation (ETICS and ventilated facades), thermal bridge treatment, and under-portico areas

Manufactured by a company certified with a quality management system.

Why Choose High-Performance Insulation for Your Home?

Whether you’re building new or renovating, investing in top-tier insulation like Stiferite can dramatically reduce energy bills and improve comfort. For your own home improvement projects, consider similar polyiso or PIR panels for walls, roofs, and floors.

Key Benefits of Polyiso Insulation

• Excellent thermal performance (low lambda values)
• Fire-resistant properties
• Lightweight and easy to cut and install
• Moisture resistance
• Long lifespan with stable performance

Complement Your Insulation Upgrade with These Products

Once you’ve improved your home’s envelope, enhance the interior with energy-efficient lighting and thermal curtains to further reduce energy use. For outdoor spaces, consider a pergola or gazebo to create shaded, comfortable areas. And don’t forget to furnish your upgraded home with comfortable sofas, dining tables, and beds for ultimate relaxation.

Frequently Asked Questions

What is the difference between PIR and polyiso insulation?

PIR (polyisocyanurate) and polyiso are closely related; PIR has a slightly higher fire resistance and thermal performance. Both are excellent for achieving high energy ratings.

Can I install Stiferite panels myself?

While possible for experienced DIYers, professional installation is recommended for external wall insulation to ensure proper fixing and airtightness.

How thick should insulation be for a Class A energy rating?

Thickness depends on your climate and existing construction. In Italy, achieving Class A often requires 80–120 mm of high-performance foam insulation on walls.

Is Stiferite suitable for roof insulation?

Yes, Stiferite produces panels specifically for flat and pitched roofs. Check with your supplier for the correct product for your application.

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