Building Envelope & Fenestration Testing Laboratories
Envelope testing measures how a window, door, curtain wall, façade or roof keeps out air and water and resists wind load. Laboratory tests use full-size specimens mounted in a chamber; field tests verify installed performance. Common references include ASTM E283 (air leakage), ASTM E331 (water penetration), structural load tests, and product-specific FGIA/AAMA and NAFS programmes.
What does it measure?
- Air leakage rate
- Static and dynamic water penetration
- Structural performance under wind load
- Impact resistance (missile impact in hurricane regions)
- Thermal performance and condensation resistance
When is it used?
- Product certification of windows, doors and skylights
- Curtain wall mock-up testing for a project
- Diagnosing leaks in installed façades
- Roofing and waterproofing qualification
Sample considerations
- Mock-ups must match production details, anchors and sealants.
- Confirm the certification programme the result is intended for before testing.
Laboratories with relevant capabilities
- Platinum Facades Ltd (Harlow, Essex) — Building Envelope Testing, Facade Testing, Water Penetration Testing