Originally Posted by FHI Decks & Windows
Most vinyl windows have vents in the bottom to allow water to escape. If you screw through the bottom chamber water could leak into your frame area before it hits the vents. You might want to pan flash the opening.
BTW, you will void your warranty.
Great point FHI Decks and Windows!!! I guess it would help if I applied some caulk to 2 of the supplied screw hole covers and place then over the holes I would be drilling at the botton. In general, what do you think about installing the glass blocks directly to the sides of the vynil frame, (with just the glass block mortar)?
A "glass-block dryer vent" will be installed in place of one of the glass blocks.