Whether it is to seal windows, weatherproof your roof, or make your bathroom tiles fit together perfectly, there are plenty of reasons why a caulking gun belongs in your tool box. These days, there ...

Add Yahoo as a preferred source to see more of our stories on Google. Man's hands applying caulk - Yori Meirizan/Getty Images Don't let a gunked-up caulk gun ruin your home improvement projects.

You can do everything right—scrub the chamber, lube the rails, swap springs, polish feed ramps—and the thing still chokes like it was designed to fail. Some guns are like that. They look the part and ...