Glass Block Repair Chicago

I opened my case and pulled out a single glass block. It was heavy, thick, and cool to the touch. It wasn't a solid piece of glass—it was two halves fused together, creating a vacuum inside that gave it the insulation power of a brick wall.

Failed mortar joints allow water to seep behind the blocks. During winter, this water freezes and expands, causing the mortar to crumble and the blocks to displace.

To maintain and repair glass block walls and windows effectively: