Sturdy building block and fragile glass make an unlikely combination. But that’s what you get with glass block — the strength of masonry and the light of a window. It’s used mainly on modern-style ...

Q: I am concerned about the security and efficiency of some of my old single-pane first-floor windows. I think glass-block windows would be more secure. Are they efficient and can I install them ...

Dear Nina: Complete glass block window installation kits are available, but it is not difficult to do it yourself using individual glass blocks and mortar. This will result in an extremely strong ...