Sanding not only feathers out chipped paint but also provides "tooth" for the next coat of paint. For glossy trim, use a sanding sponge rather than sandpaper. Sponges mold to the shape of the trim and last longer than paper. When applying latex over alkyd paint or when he is not sure of the original finish, Brian Doherty, a painter in Richmond, Virginia, follows the hand-sanding with liquid sandpaper to make sure the surface is completely deglossed to prevent incompatibility problems. "I've seen homes where latex was used on oil-painted trim, and the paint started to peel in less than a year," says Doherty.
A fresh paint job has the power to totally transform the look of your house in less time and for less cash than any other remodeling project. That thin skin of resin and pigment also protects your investment, shielding it from sun, wind, and rain—until the paint begins to crack and peel, that is. Then it's time to button up with a couple of new coats. Properly applied, new paint should last for a good 15 years, provided you use top-quality materials, apply them with care (and with an eye on the weather), and, most important, clean and sand every surface first. Here's what you need to know to get a first-class finish on your home's exterior.
Some contractors work on time and material others on a firm contract. I would never hire the former and am leary of the latter. A contractor may low-ball a bid to get the job planning to make a killing on change orders. If you say good morning to them, they charge you extra for that. If the contract is not very, very specific and extensively fleshed out or if they display their change order schedule prominently on top, show them the door.