Preventing air movement through wall and ceiling assemblies is one of the keys to building a durable and comfortable home. Conservation Technology's Building Gaskets are a great way to prevent air leakage and associated moisture problems. They come in three different widths, for band joists, 2x4 walls, and 2x6 walls. Unlike caulks and sealants — which need warm and dry conditions for an effective seal — gaskets can be installed in any kind of weather. Resource Conservation Technology, 800/477-7724, www.conservationtechnology.com

A good door sweep is an inexpensive way to tighten up a home, but its effectiveness can be hampered by plush carpeting or a new layer of flooring; the door may become difficult to operate and the sweep may wear out prematurely. M-D's Seal-o-Matic is a clever solution to this common problem. The retractable sweep raises when the door is opened...

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