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Lou Manfredini joins Lisa Dent in his new weekly segment, Ask Lou, where he answers your questions about all things home repair. This week, Lou discusses the best methods for caulking.

Caulk is one of the greatest tools of illusion ever invented. We’ve been using it to stop leaks and hide gaps for centuries, and it remains one of the most useful things you can have in your toolbox.

Caulk can fix a wide range of household problems. Flexible, adhesive, and inexpensive, caulk is great for home repair. Caulk has a number of unusual uses, like preventing damage to cabinets. Caulk is ...