Well, that all depends on the type of glass block wall you're trying to build. There are many different ways to install them, and it really varies depending on the situation. You could probably find a lot of helpful information by doing a quick search online for "how to install glass blocks." But in general, you usually have to use some kind of mortar or adhesive to hold them in place. Good luck!

The first thing you need to do is measure the opening where you want to install the glass blocks. You'll also need to purchase the right type of mortar and a trowel. Once you have all of your supplies, start by spreading a layer of mortar over the opening using the trowel. Place one of the glass blocks in the mortar and press down firmly. Then, use the trowel to spread more mortar over top of the block. Make sure that there is enough mortar so that it covers all four sides of the block. Continue this process until all of the blocks have been installed.