How Do You Repair A Glass Block Window?
Glass block windows are composed of a number of single, modular glass blocks set with mortar in the opening of a wood or masonry wall. Sometimes an individual glass block cracks, gets scratched or breaks. If just one glass block in a window grouping is damaged, it affects the look of the entire window. Individual glass blocks can be removed and replaced without taking apart the entire window. Cut strips of furnace duct tape and place them over both faces of the glass block you will be replacing. Put on safety glasses, work gloves and a long-sleeved shirt. Strike one face of the glass block using a rubber mallet until the glass breaks. Most of the glass should stay stuck to the duct tape. Repeat on the remaining face of the glass block. Place duct tape and any glass shards in a bucket. Vacuum to remove any shards and slivers of glass. Chip out the mortar surrounding the damaged glass block using a chisel and hammer. Be careful not to chip or crack any of the glass blocks adjoining the o
