The best exterior caulk helps seal drafts and leaks, preventing water or air from seeping into your home. We put the top exterior caulks to the test.

This is an inexpensive type of caulk and was commonly used by builders years ago. Saturating this type of caulk with 90 percent isopropyl alcohol will make it easier to remove.

Latex and acrylic should be used to fill cracks that expand or contract more than one-eighth of an inch; read the label to see whether the latex or acrylic caulk in question can be used outdoors ...

* What it will cost: Caulk can run from $3 to $10 a tube, depending on what it's made of and the length of its warranty. A high-end manual caulk gun can run up to $50. But the one you want to buy ...

Once a week, wipe the caulk with a mild solution of bleach to retard the initial growth of the mildew. Send your questions to Here's How, 6906 Royalgreen Dr., Cincinnati, OH 45244 or visit www ...