I'm installing an exterior new construction glass block window, how should I water proof it?

My plan is to first nail 1x4 jams into the rough opening. Then I'll install the blocks one at a time using silicone, spacers and anchors (this kit). I'll then caulk the gaps between the blocks and jams. Later, I'll add trim around the exterior opening to cover the gap between the house wrap and jams. It doesn't rain much here and the top of the window will be just inches beneath a 2' roof overhang, so I don't plan on using flashing tape. Does this sound like an ok plan? I ask because I've seen tons of videos about how to install single hung new construction windows with fancy nail flanges and there's always tons of flashing tape, expansion foam and particular steps that need to be taken to make sure that water intrusion flows out toward the wall exterior. Hoping I'm not making a mistake here submitted by /u/_polymorpha_ [link] [comments]

Mar 19, 2025 - 06:31

My plan is to first nail 1x4 jams into the rough opening. Then I'll install the blocks one at a time using silicone, spacers and anchors (this kit). I'll then caulk the gaps between the blocks and jams. Later, I'll add trim around the exterior opening to cover the gap between the house wrap and jams. It doesn't rain much here and the top of the window will be just inches beneath a 2' roof overhang, so I don't plan on using flashing tape. Does this sound like an ok plan? I ask because I've seen tons of videos about how to install single hung new construction windows with fancy nail flanges and there's always tons of flashing tape, expansion foam and particular steps that need to be taken to make sure that water intrusion flows out toward the wall exterior. Hoping I'm not making a mistake here

submitted by /u/_polymorpha_
[link] [comments]