Effisus Breather FR UV
Total UV Exposure. Maximum Safety.
Façade breather membranes act as a protective underlay and shield against driving rain and wind, while allowing water vapor to pass through. Effisus Breather FR UV is an A1 fire rated membrane that ensures the highest standards in watertightness and UV exposure.

Masonry and blockwork systems

Renovation and retrofit projects

Ventilated façade systems
Façade membranes are critical to the building’s weatherproofing, comfort and energy efficiency, moreover, they play a key role in enhancing the façade’s durability.
Breather membranes act as a protective underlay and shield against driving rain and wind, while allowing water vapor to pass through, thus preventing mould build up in geographies with wet and cold seasons.
Effisus Breather FR UV is an A1 fire rated membrane that ensures the highest standards in watertightness and UV exposure, resulting therefore in a positive contribution to the building’s safety, efficiency and longevity. For peace of mind and compliance, this solution is backed by solid test results, proven real conditions and it is fully in line with the Building Safety Act (BSA) and is approved for unrestricted use in High-Risk Buildings (HRB).
Extremely robust and durable, Effisus Breather FR UV is complemented by a full range of dedicated accessories for fixing the membrane in place, addressing overlaps, sealing the perimeter and finally sealing punctual perforations. The result is a complete, reliable, and easy-to-install system that saves time on site while guaranteeing long-term performance.
For less stringent specifications or building compliance criteria where B class fire-rated façade elements are accepted, Effisus Breather FR-B matches and excels in that challenge.
| Property | Standard | Value |
|---|---|---|
| Thickness | – | 0,230mm ± 0,20mm |
| Length | – | 50m |
| Width | – | 1,50m |
| Reaction to Fire Membrane | EN 13501-1 | Class A1 |
| Resistance to water penetration | EN 13111 | W2, pass |
| Water vapour transmission properties (sd- value) (m) | EN 12572 | 0.094 |
| Tensile Strenght MD/CD (N/50mm) | EN 12311-1 | 4230 / 3110 |
| Nail tear resistance MD/CD (N) | EN 12310-1 | 295 / 385 |
| Flexebility at low temperature (-40ºC) | EN 1109 | No cracks |
| Airtightness (m3/(h x m2 x 50Pa)) | EN 12114 | 0.006 |
| UV Resistance | – | 100% Exposure |
| Temperature service range | – | -40°C to 100°C |
| Reaction to Fire (full system testing) | EN 13501-1 | Class A2-s1,d0 |
| Artificial ageing by long term exposure (5000hrs) | EN 1296 / EN 1931 | Passed |