Below, This Old House technical editor Mark Powers shows how to paint a room expertly in one weekend, from the first scratch of the pole sander to the final feather of the brush. A poorly executed paint job is easy to spot, with its drips and slips and uneven lines. More often than not, haste is the culprit. But with some thorough preparation up front, many of the possible pitfalls will be eliminated—and the actual painting will be much easier, as well.
So before you crack your first paint can, schedule in a full day for prep. The best prep starts with sanding and sometimes requires scraping.
Sanding scuffs up the existing surface so the paint grabs hold; scraping will take off any old bumps or drips. You should also take your time patching holes, caulking gaps, and cleaning dust or grease with soap and water so you start with a pristine surface. Primer fills in spongelike pores and creates an even, solid base that takes paint well. In the latter case, have the paint store tint the primer to go with your wall color.
It will save you at least one coat of paint later on. Primer should also be sanded before the paint goes on the wall; for a top-notch job, sand between paint coats, too. First-time painters tend to tape every edge to guard against misstrokes.
But that can bring on its own problems if paint bleeds under the tape or if you peel paint off when removing it. Proper use of an angled brush can save you hours of setup and touch-up. Related Products. View More Products. Related Pages. View More Pages. Popular Products. Berger Everlast Range Advice and Products.
Subtotal inc GST. Total inc GST. Including GST. Discounts inc GST. Giftcard Total. Net Owing. Sign In. Store Locations Contact Us. Another thing that can cause you problems besides roller buildup is roller texture.
Throughout the years, you have maybe added some texture to your walls to make them more interesting, or maybe the previous owner did. No matter where the texture came from, you can easily get rid of it by knocking it down with some light sanding.
If you are having trouble with paintbrush marks, strip your paint completely, and start over. This time, use a foam roller or add floetrol to your paint to minimize brush marks. You will have to wait until it is completely dry to sand it. The best drying temperatures are between 70 and 80 degrees, with humidity below 70 percent. To sand latex paint, use or grit sandpaper or a fine to medium flexible sanding sponge to sand fresh latex paint. For sanding cured latex paint you can use coarser grits.
It takes up to 30 days for latex paint to cure hard and coarser grits will scratch or remove fresh paint. To prevent any rough patches, you will have to allow your paint to dry enough so you can sand it. Rushing the process is not in your best interest. Water-based paints will always dry much faster than oil-based paints. There are binders in the paint to help it hold the pigment together. Flat paints will have the least amount of binders and glossy paints will have the most amount of binders.
The flatter the paint sheen, the faster it will dry. Glossy paint will always take the longest time to dry. Semi-gloss paint is somewhere in the middle of the paint sheen scale, and they will take an average amount of time to dry. Even though the paints will be dry enough in an hour or two to apply another coat, you should wait at least hours before sanding and then applying another coat. Whether you will wait 12,18, or 24 hours depends on the type of your paint, so make sure to read the instructions on your paint.
To quicken the drying time, keep the temperature in the room around 72 degrees. Water-based paints will dry optimally in a room that temperature, and with some humidity.
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