Twin Cities Glass Block

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Silicone vs. Mortar

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The Advantages of Mortar over Silicone

Mortar will not mold or mildew
No industry standards for the use of silicone in glass block basement or bathroom windows.
Entry has been gained through siliconed glass block windows by the use of box cutters and utility knives
There is a huge descrepincy between the quality of the silicone products being used.
All Pittsburgh Corning testing data is based on the use of mortared systems except for the KWIK 'N EZ and LightWise systems.

For more information, see the Pittsburgh Corning brochure GB-185, broken into 4 sections for easy downloading.

Pages 1-5 | 6-10 | 11-15 | 16-20

Masonry Unit definitions, according to the 2006 International Residential Code, pg. 16
MASONRY UNIT	Brick, tile, stone, glass block or concrete block conforming to the requirements specified in Section 2103 of the International Building Code.
CLAY	A building unit larger in size than a brick, composed of burned clay, shale, fire clasy or mixtures thereof.
CONCRETE	A building unite or block larger in size than 12 inches by 4 inches (305 mm by 102 mm by 102 mm) made of cement and suitable aggregates.
GLASS	Nonload-bearing masonry composed of glass units bonded by mortar.
HOLLOW	A masonry unit whose net chross-sectional area in any plane parallel to the loadbearing surface is less than 75 percent of its gross cross-sectional area measured in the same plane.
SOLID	A masonry unit whose net cross-sectional area in every plane parallel to the loadbearing surface is 75 percent or more of its cross-sectional area measured in the same plane.

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