DIY Fiberglass Basement-Wall Panels

Extend a tape measure 48 inches, the width of a panel, from the corner -- and make a mark at the top of the wall. Make another mark at the bottom of the wall. Connect the lines using a 4-foot level, and check for plumb. You're making these 48 inch marks to ensure that the 48-inch-wide panel is installed plumb, or vertically true.

Install the corner molding. Place silicone sealant into the channels to bind with the panels.

Place adhesive on the back of the panel. Cover all areas of the panel evenly with the adhesive.

Slide the panel into the channel of the molding. Ensure that the panel aligns with the plumb line. Leave a 1/4-inch gap between the top and bottom of the panel and the ceiling and floor to allow for expansion.

Take a laminate roller and press the panel into the wall. Cover all areas of the panel with the roller.

Place sealant into the channel of the cap molding, and fit it over the top of the panel.

Place sealant into the channel of the division bar, with the one-piece molding between the panels. Slide the division bar into the panel.

Apply adhesive to the next panel, and install it as you did the first.

Continue installing the rest of the panels, using the same method you did for the first two panels. Cut any end panels and molding to length when you reach a corner. Measure the length from the last panel or mold to the end of the wall. Cut the panel or mold to fit.