The glass block window panel sits on the block or concrete wall and is held in place with mortar and caulk. When it comes to basement windows, there’s nothing more practical than glass block windows.

Glass blocks make strong, attractive walls and windows that are easy to maintain and keep clean. The blocks are made of two sections of pressed glass fused together with a partial vacuum between them.

When replacing basement windows, most people now consider glass block. It's a good insulator, secure, and waterproof. It lets light in, but obscures visibility from the outside, and can incorporate ...