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What is Passivhaus?
Passivhaus is the world’s leading standard for ultra-energy-efficient buildings.
It ensures:
- Exceptional airtightness
- Minimal heat loss
- Superior thermal comfort
- Lower heating and cooling costs
- Healthier, controlled indoor environments
How our products help:
Passive Purple and related membranes form a seamless air barrier, making Passivhaus compliance easier and more reliable. -
What is BBA Certification?
BBA (British Board of Agrément) is one of the most trusted construction certification bodies in the UK.
A BBA-certified product has undergone:- Lab performance testing
- Durability checks
- Building regulation compliance checks
- On-site assessments
Why it matters:
Architects, builders, and inspectors trust BBA-approved systems for guaranteed long-term performance. -
What is BDA Certification?
BDA (British Board of Agrément) Agreement is an independent technical approval that verifies a product’s performance, durability, and suitability for use in UK construction projects.
A product with a BDA Agreement has been assessed under controlled testing and real-world application conditions to ensure reliable, compliant performance.
It confirms:
- Independently verified performance
- Proven durability and reliability
- Compliance with UK building standards
- Approved use for defined applications
How it applies to our products
The BDA Agreement applies to Passive Purple External (Spray), confirming its suitability for external airtightness and sealing applications when installed in accordance with guidance.
