Q–I want to seal a gap around a copper air-conditioning pipe that runs through a cinder-block wall of our home. Rain and cold air are coming in through the gap. There are so many caulks, patching ...

Caulk is a home-improvement hero. No matter how skilled the carpentry, there are always small cracks and gaps that need to be sealed around windows, cabinets, doors and sinks. Caulks help insulate, ...

For most sealing and energy-efficiency projects around the house there are two basic kinds of caulk: silicone and latex. Both come in various types of containers, from toothpaste-size squeeze tubes to ...

Q: My landlord’s novice repair person caulked around the bathtub — twice. Both times, the caulk pulled away from the wall. Why? And what’s the right way to do it? A: New caulk doesn’t stick well to ...