Accurate assessment of the watertightness of new and existing roofs can potentially save building owners hundreds of millions of dollars annually. The challenge for roofing specifiers is choosing the most effective exterior-to-interior watertightness evaluation...

As one of the world’s most versatile building materials, with a wide range of esthetic options and outstanding energy characteristics, glass provides numerous opportunities to enhance buildings’ visual appeal and performance.


Design/construction professionals can minimize their difficulties with onsite, or ‘in-situ,’ testing of fenestration components by adhering to certain well-established quality control (QC) principles that can reduce the chances of costly failures. However, there is...

The use of natural stone on buildings and paving can be traced back to the beginning of civilization. There are countless buildings, monuments, and structures dating back thousands of years that have stood the...

Useful standards for testing the physical performance of windows have been developed over many years, culminating in the North American Fenestration Standard (NAFS). This standard was first published in 2005, with new editions available...

Adoption of the North American Fenestration Standard (NAFS) has resulted in big changes in the fenestration industry. However, does this signal changes for exterior wall materials, as well? Extruded aluminum—aluminum alloy which has been...