Hi, and welcome to the forums. Can you describe the situation a little better? How big is the gap? What is causing it (poor floor/wall installation, floor grid or other structural failure, just cosmetic, etc.)? More info will probably draw more useful suggestions, beyond the obvious: nail some molding to the wall.
The gap is causing the cool air to come up the sides, the gap is about an inch wide. We would like to fill the gap to allow more cool are to come through the vented tiles.
If you can't find a suitable molding, I have used a product called "air conditioner weatherstrip," sold in hardware stores and home centers. It's 1in or 2in square foam strips with an adhesive backing along one side. Simple to install and the floor tiles keep it compressed in place. I have only used it in areas spanning a few tiles, but if your gap is a long one, you can probably find this stuff in bulk rolls.
Sealing Raised Floor
