A clever solution for sealing big gaps

InstaTrim is part trim, part caulk and part weather sealant. And for some situations, it’s a true problem solver.

InstaTrim is a V-shape strip of 1/2-in.-wide plastic, backed by a bead of adhesive caulk. To install it, remove the peel-off tape, position the strip, then press it into place. The self-centering “wings” along the edges flex to create a tight seal. Since InstaTrim goes on dry, it can be painted immediately. It’s perfect for sealing moderately large gaps (up to 1/4 in.) and leaving a clean, smooth bead. It’s ideal for sealing wall and floor gaps around tubs, for covering gaps around toilet bases and sealing windows and doors.

For good results, you have to first remove all existing silicone caulk, especially in bathrooms and other wet environments.

InstaTrim is available in six colors and costs about $20 for a kit containing two 10-ft. lengths. It’s available at instatrim.com, other online sources and some stores.