Technical Bulletins

Stay informed on current glazing news with Southern California Glass Management Association’s quarterly Technical Bulletins.

July 2022

“Glazing System Thermal Breaks” by Dan Romine for SCGMA

The performance of the exterior façade not only depends upon the type of systems, but the ability of the systems to react to environmental conditions. It is the responsibility of glazing contractors to understand how these components work and verify that the systems can meet the specified criteria.

Click here to read “Glazing System Thermal Breaks”


January 2022

“Laminated Glass and Low E Coatings” by Dan Romine for SCGMA

Occasionally, risk elements present themselves in the commercial glazing business, and we believe that it is helpful to address them. Rejection of installed laminated Low E glazing due to subtle color shifts has been an issue and is the subject of this technical bulletin.

Click here to read “Laminated Glass and Low E Coatings”


October 2021

“Sealant Joint Design” by Dan Romine for SCGMA

Façade performance requires the proper system selection for the project, but equally important in the longevity of the performance is the design of the sealant joints. In this SCGMA Technical Bulletin, we review the fundamentals of good sealant weatherseal joint design.

Click here to read “Sealant Joint Design”



July 2021

Field Water Testing” by Dan Romine for SCGMA

Glazing system performance is always an important topic in our industry and very present in the potential long-term liability of contractors.

One of the most crucial performance issues for glazing contractors is water infiltration. Water infiltration from the testing of glazing systems is also one of the most common points of failure and the subject of this technical bulletin.

        Click here to read “Field Water Testing.”


April 2021

“Gray PIB Migration” by Dan Romine for SCGMA

Over time, litigation has alleged significant defects in insulated glass units using gray polyisobutylene. Gray polyisobutylene, also known as PIB, is one of the common risk elements we believe should be addressed within the commercial glazing business.

Click here to read “Gray PIB Migration.”




January 2021

“Mitigating the Menace” by Jordan Scott for US Glass Magazine

Addressing occasional risk elements in the commercial glazing industry is important. Anisotropy, a visual distortion or coloring of heat-treated glass when inspected in polarized light, is one example.

Jordan Scott’s article for US Glass Magazine, “Mitigating the Menace,” discusses the progress made in educating firms about anisotropy’s visual impact, ways to minimize its effect, and how to create standards for acceptance.

Anisotropy issues increased when some recent Southern California projects used high-performance coatings on 3/8″ (8mm) glass. It appears that the combination of the expanded glass thickness and the pre-coated, high-performance glass designed to reflect heat creates a challenge in the heat strengthening/tempering process. This effect has led some in the industry to believe it is a significantly negative visual impact, resulting in attempts to reject the glass. There are still no specific conclusions about the visual impact’s causes or severity because of ongoing legal implications.

The purpose of sharing this information is to educate the community and avoid potential product rejection. In some cases, anisotropy concerns were discovered early enough to switch the glazing into a post-coated product, where the glass is heat strengthened/tempered before applying the coating.

We hope this information serves as a useful tool for avoiding anisotropy concerns.

Click here to read “Mitigating the Menace.”