Business OverviewGlass block is back in vogue for two reasons. The first: having glass block windows installed is a cost-effective way to beautify your home and add real designer flair. The second reason is that installing glass block into basement window areas is a great way to let the light shine in, and a the same time burglar proof windows. Starting your own glass block installation service does not require a lot in terms of investment or expertise. Almost all home improvement centers will now make up glass block on a custom order basis to fit any size opening. However, the installation techniques still do require some experience, but this can be self-taught starting with your home, or a friend or relative's home. One thing is for sure; it does not appear as though glass block windows will be falling from popularity any time soon.