Glass Manufacturing Warranty

Reliable Specifications and Warranties

For the benefit of our customers, Tower Insulating Glass LLC uses a hermetic organic dual seal made of a polyisobutylene (PIB) primary moisture seal and a one-part silicone secondary seal or a dual seal system consisting of a structural foam spacer with a pressure sensitive acrylic adhesive primary seal and a hot melt butyl secondary seal.  The base glass in our insulating units is chosen to meet the quality standards of ASTM C 1036. Where applicable, glass we supply is in compliance with the quality standard ASTM C1048 for heat-strengthened and fully tempered flat glass and ASTM C1172 for laminated architectural glass.

Our insulating units meet the CBA rating established by the Insulating Glass Certification Council: ASTM E 2188, ASTM E 2189, and ASTM E 2190. To learn more, call today.

About Our 10-Year Warranty

Tower Insulating Glass LLC offers a 10-year warranty stating that, “Insulating glass units made with aluminum box spacers will be free from material obstruction of vision as a result of film formation on the internal glass surfaces caused by insulating glass seal failure for a period of ten years”, when installed correctly.  Insulating glass units made with Super-Spacer are warranted for a period of two years.

Our liability under this warranty shall be limited to replacement of the glass FOB to our plant or to refund the purchase price at the option of Tower Insulating Glass LLC. We shall not be liable for costs of removing and replacing the glass or any incidental or consequential damages.

We make no warranty of merchantability, or fitness for a particular purpose, or use, and no other warranty, expressed or implied. The application of applied window films of any kind or any other materials and/or the use of non-approved glazing sealants voids this warranty.

Units over 60 square feet are not covered by this warranty.

The Importance of the IGCC in Our Industry

The IGCC is a non-profit organization jointly established in 1977 by manufacturers, consumers, specifiers, and others concerned with the quality and performance of insulating glass units. IGCC sponsors and directs an independent, true third-party certification program. 

Periodic accelerated laboratory tests per American Society for Testing Materials (ASTM) specifications and unannounced plant quality audits and inspections assure the quality of sealed insulating glass products.