More and more residential and commercial buildings are adopting the PassivHaus standard of construction.  The aim is to substaintionaly reduce the amount of energy consumed and to create excellent comfort levels in summer and winter.  This is achieved by:

• Very good levels of insulation with minimal thermal bridges
• Well thought out utilisation of solar and internal gains
• Excellent level of airtightness
• Good indoor air quality, provided by a whole house ventilation system with highly efficient heat recovery

Vitral rooflights have always promoted these features and as a result we are being consulted for more and more PassivHaus projects ranging from residential to schools.

Vitral is the only sloped glazing system that:

• Has an overall U-value of 1.0w/m²K with triple glazing, including the head, cill and verge detail
• Promotes the benefits of solar gain as a natural resource
• Does not require additional frame or structure to incorporate opening vents
• Provides air tightness to Class 4 at 600 Pa
• Provides water tightness to E1200

Vitral was the rooflgazing system used in the building with the highest BREEAM rating in the UK, Green Offices, Thorpe Park, Leeds