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No. 1 painter's tip: Prep work matters

Painting is not as easy as it looks. For your next painting project, be sure to steer clear of these 10 amateurish painting mistakes.

Don't skimp on the prep work.

Indoors, the most important stuff is cleaning all surfaces, repairing damaged areas, patching where necessary and prepping the area (see last tip, below). Outdoors, the critical prep work is removing peeling and otherwise loose paint, repairing damaged or rotted wood and cleaning all surfaces.

Don't mess with old paint unless you're sure it's lead-free.

Apart from curious kids eating paint chips, all of the warnings about lead paint can be realized with paint prep work: sanding or scraping lead paint makes it airborne, the perfect state for getting into your body. If there's any chance a surface may have been painted prior to 1980, have a sample tested first. For information on testing and dealing with lead paint, visit the EPA's website at

Don't paint over moisture or active mold.

Stain-blocking (and specifically mold-blocking) primers are good for preventing color bleed-through from dark mold stains, but they're not intended to correct a live mold problem. And they'll only mask a moisture problem for a very short time. Since mold and moisture go together, first stop the moisture (wherever it's coming from), then kill the mold (with detergent or diluted bleach) and let it all dry completely before priming and painting.

Don't paint bare surfaces without priming first.

As much as you might resent it, primer is your friend. It sticks really well, it fills pores in raw materials and it's less than half the price of paint.

Don't paint masonry on a whim.

Poured concrete, brick, stone and concrete block are among the very few building materials that can fairly be called "maintenance-free." Painting them once changes that forever.

Don't use tape (in most cases).

Pros don't use tape for the same reasons you shouldn't: it's time-consuming and painstaking to apply, it usually lets paint bleed underneath its edge, and it can peel the new paint off when it's removed. Instead of using tape in the usual places, remove anything that's removable (like outlet covers and cabinet hardware), and take the time to "cut in" a clean line of paint along the edges of trimwork and the like.

Don't use cheap paint.

Quality paint goes on better, lasts longer and has much nicer color than lousy paint. And when you consider that you'll be looking at it for the next decade or so, an extra $10 or $15 a gallon is a worthwhile upgrade.

Don't use cheap paintbrushes.

A $3 brush will never work well and should be discarded after the first job, right about the time it starts shedding bristles. A $10 brush knows how to handle paint and will become a treasured tool for years.

Don't paint window tracks.

Painting the tracks where the sashes slide is perhaps the best (and dumbest) way to ruin a window. This is akin to lubricating ball bearings with caulk. For the same reason, never let paint overlap from the stop to the sash and vice versa.

Don't paint over outlet and switch covers.

Being too lazy to remove electrical cover plates before painting, and merely taping off the covers, leaves a ridge along the edge that can peel away in chunks if the cover is removed later. Take the two minutes to remove the switch plate.

No. 1 painter's tip: Prep work matters 04/22/11 [Last modified: Thursday, May 10, 2012 4:49pm]
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