Glass block windows are an attractive and eye-catching alternative to plate glass windows. At Master Seal, we supply and provide the Pittsburgh Corning line of glass block window installers. With their variety of patterns, sizes and textures, Pittsburgh Corning Glass Block products adapt to your needs in any room.

Pittsburgh Corning glass blocks are very popular for basements for added security and water tightness. They also bring in 35% more light than average basement windows. Options available are fresh air vents with screens, and special dryer vent blocks to allow you to vent your dryer out through the window. Glass blocks are a natural fit for the bathroom. They allow for privacy while letting the natural light in, they’re stylish, and easy to clean. They can also add dramatic flair to an entryway. The new LightWise glass block series are an excellent choice for replacement windows.