What Lights Are Used for Glass Blocks?

Glass Block Lights

• The same thick glass blocks used for security and privacy in windows can be drilled with holes and filled with small lights. Lit glass blocks can serve as lamps, night lights and decorations. Stacked they can form room-dividing walls, kitchen islands and other features that let light wash through.

Strands of Small Lights

• Glass blocks are usually lit with a strand of miniature lights, such as those used for holiday decorating. Use lights on a white cord so the cord is more easily camouflaged within the block. The number of lights used depends on the size of the glass blocks. The smallest 4- by 4-inch blocks can fit a strand of about 30 bulbs, while a 50-light strand will work in an 8- by 8-inch block. Consider LED light bulbs, as they won't get as hot inside the glass and use less electricity. Strands of fiber-optic bulbs can also illuminate glass blocks.

How to Make

• Many people make their own lit glass blocks by inserting the lights themselves. To make a hole in a standard glass block, use a glass drill bit only slightly larger than the size of the bulb to drill a hole in the side of block A 1/2-inch hole fits most strands of small lights. Don't use too much pressure, because the glass could crack. Shake any glass bits from the hole before inserting a strand of lights.

Where to Purchase

• Glass blocks can be purchased at most hardware stores. Some craft outlets offer blocks with pre-drilled holes. Stock up on light strands at after-holiday sales. Many craft stores sells strands of lights year-round, For those who prefer to buy the blocks pre-lit, artisan websites offer hundreds of buying choices