Having a quality caulking gun can come in handy for certain projects. If you need one, DeWalt is an option, but here's what ...

Avoid caulking around moving parts of a window or the window could end up sealed shut. Don’t caulk around the window trim because it could trap in moisture, leading to damage.

To seal a medium-sized window, about two packs are needed; for doors, about three. The Singles come in white or clear, paintable or waterproof and are sold for about $3.50 per pack.