Caulking tips and tricks: Insider Sneak Peek
This Old House general contractor Tom Silva explains the basics of caulk to a homeowner
There's a wide variety of caulk on the market, with attributes making different types suitable for particular applications. For replacing the caulk in this homeowner's bathroom, TOH general contractor Tom Silva recommends a silicone formulation. It sticks to nonporous surfaces, plus silicone is mold- and mildew-resistant—important for a room where moisture is a given. Silicone also has a bit of flexibility, so it'll remain adhered through the expansion and contraction that occur with temperature changes. Tommy also points out that a standard caulking gun actually has a few extras that come in handy for prepping a new tube of caulk. To trim the tip, stick it through the hole in the handle while you pull the trigger. Extend the piece of wire attached to the body to break the foil seal or to extract hardened caulk that might be stopping up the gun.