ENGINEERING SPECIFICATIONS & FIRE RATINGS

Certified Fire Safety Classes A2-s2,d0 and Broof(t1)

All Green Haven installed Sempergreen systems satisfy the most stringent European Union building and fire safety directives. Fully verified structural loads, non-combustible materials, and accredited burn laboratory test reports.

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A2-s2,d0
EN 13501-1 non-combustible class for living walls
Broof(t1)
EN 13501-5 certified external fire penetration for roofs
45-100 kg/m²
Verified saturated design loads for any roof pitch
Cradle to Cradle
Certified circular economy building material
EN 13501-1 VERIFICATION

A2-s2,d0 Non-Combustible Living Wall Cladding

SemperGreenwall mineral Flexipanel systems have been tested in accredited European burn laboratories. The system does not support flame spread, generates zero toxic smoke, and produces zero flaming droplets.

A2-s2,d0 certified exterior living wall
EN 13501-5 VERIFICATION

Broof(t1) External Fire Penetration Shield

Porous mineral substrates and thick succulent sedum blankets eliminate spark ignition and lateral flame spread on roof surfaces, serving as an effective fire barrier around mechanical penetrations and roof lights.

Broof t1 certified extensive green roof
STRUCTURAL PHYSICS & NORDIC COMPLIANCE

Building Physics & Structural Load Engineering

All Green Haven solutions are designed according to strict European construction codes and Nordic regional building directives. We calculate saturated deadweight, aerodynamic wind suction forces, and detention drainage curves, ensuring complete building safety.

Summary of Certified Technical Standards

Official test laboratory performance criteria for Sempergreen systems.

Standard / Parameter Green Haven / Sempergreen Compliance Reference
Living Wall Fire Reaction A2-s2,d0 (non-combustible) EN 13501-1 standard
Roof External Fire Resistance Broof(t1) certified EN 13501-5 standard
Saturated Weight (Ultralight) 45-55 kg/m² Structural design load
Saturated Weight (Standard) 80-100 kg/m² Multilayer sedum blanket
Stormwater Retention Rate 70-90% of annual precipitation DIN 1986-100 standard
Acoustic Absorption Coefficient NRC 0.65 (walls) / -3 to -5 dB (tracks) ISO 354 and ISO 11654
Circular Economy Certification Cradle to Cradle Certified® C2C Products Innovation Institute
Winter Freeze Tolerance Tested down to -30 °C Nordic climate acclimatization

Frequently Asked Questions

Engineering answers for structural consultants, fire safety inspectors, and architects.

Yes, SemperGreenwall indoor systems hold verified certification to EN 13501-1 class A2-s2,d0 (non-combustible construction). The system does not ignite, emit flaming droplets, or generate hazardous smoke, making it fully compliant for evacuation corridors and commercial lobbies.
Sedum plants and inorganic mineral substrate form a natural fire retardant shield. The high moisture content of succulent foliage prevents flame propagation, fully complying with European standard EN 13501-5 external fire penetration class Broof(t1).
Green Haven provides full laboratory test records, declarations of performance, and architectural CAD/BIM detail packages upon request. Reach out to our technical engineering division.
Roof structural load capacity is calculated on a 100% water-saturated system basis combined with regional design snow loads (typically 120-150 kg/m² in Estonia). Green Haven ultralight systems (45-55 kg/m²) suit standard buildings without structural retrofitting.

Need Official Fire Safety Certificates for Your Project?

Speak with our structural and fire safety engineers. We transmit official burn test records and CAD/BIM detail packs within 24 hours.

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