Glass blocks can add a modern or contemporary feel to your home. Lighting the glass blocks can give them a dramatic affect. You can easily achieve this by installing LED rope lighting. Use LED lights rather than regular bulbs because LED lights will last longer and burn brighter than regular bulbs. This way, you don't need to replace the rope light as often. Purchase LED rope lighting at a home improvement or hardware store.
Spray the glass black wall with window cleaner.
Wipe off the window cleaner to remove as much of the dust, dirt and other debris that may be on the glass block wall. This will allow the adhesive hooks to adhere to the wall better.
Allow the wall to air dry for several minutes.
Remove the paper backing of an adhesive hook and press it on the edge of the glass block wall.
Continue removing the paper backing and pressing the hooks on the edge of the glass wall until you have a long line where you would like to hang the LED lights. Space the hooks 2 to 3 inches apart.
Let the adhesive cure for several hours.
Plug the LED rope light in and place it in the hooks to see how it looks and for placement.
Unplug the LED rope light and leave the rope light in the hooks.
Clip the other end of the rope light so that it doesn't hang over off of the hooks. Clip in between two lights using a pair of sharp scissors.
Slip an end cap over the cut end of the rope light.
The Rope Lights Tips website states, "To avoid short circuiting the Rope Light, make sure the copper wires inside the Rope Light are cut neatly. Bend the Rope Light left and right, then cut off any extra copper wires."