How to join glass concrete blocks for smaller basement windows?

[Staffans2000]

Hello!

I am going to make a window of glass blocks consisting of nine blocks in a square in a newly built basement wall. Considering its small size, I thought I could join them with almost anything. Mortar, tile adhesive, silicone, setting glue... Or is it necessary to use glass block mortar?
Likewise, the grouting. Can I use any tile grout?

Staffan

 

[Niq]

Do they come in an outer wall? I've only done it for indoor use, like shower walls and similar. In that case, we glued and sealed with neutral silicone.

 

[Staffans2000]

Yes.
In an outer wall.

 

[Jörgen Ö]

There is a special adhesive for this, which I can recommend, along with erf lists, there is no reason not to use the right material for the purpose. Jointing you can do but with regular flexible tile grout.

 

[snuttjulle]

I used what the store recommended, which was their adhesive and grout for glass block. Then you know it's as correct as it can be.

 

[Staffans2000]

Now my little window is "finished". It is built with glass concrete special mortar. Can it dry in peace, so that I can have a pilsner and a little nap, to wipe off the smeared mortar with a damp cloth tomorrow?

 

[Stefan N]

Should probably wipe off as soon as possible. Then you can grout with regular tile grout.