If it dries before you can finish spreading it, you could have uneven spots and unsightly runs of paint. The best way to paint aluminum siding is with an airless sprayer. These tools are used by professional painters to create a perfect finish. Not only do these sprayers cover more area, but they do it faster and with a more even finish than a brush or roller could do.
They do require a lot of skill to use properly though, and keeping the tool clean and spraying smoothly can be a challenge. You can paint your aluminum siding in just about any color once your primer has dried.
Very bright colors might need a lightly tinted or white base, but most common home colors can be painted directly over your metal primer. The sheen of the paint is just as important as its color.
Flat or matte paint has a lot going for it from an exterior design perspective. The chalky or velvety finish will give your home a very modern appearance as long as the paint is clean.
It also hides small painting mistakes like bad brushwork much better than other finishes. But matte paint is hard to clean.
The surface texture attracts more dirt and stains than other finishes. And spraying or scrubbing dirty spots can burnish the surface and create an uneven finish. Scrub away any mildew with a solution of three parts water to one part household bleach. Remove dirt and grime by hand-washing the siding with soap and warm water.
Alternatively, if you want to speed up the job of cleaning, rent a power washer. Just be sure to accessorize the tool with a low-pressure tip, being careful to direct the water stream directly at the siding. Never spray upward; by doing so, you may force water behind the aluminum. If you spot any aluminum oxidation or rust, remove that too before rinsing the exterior surface with a garden hose. Do not begin painting until the siding has been allowed to dry completely; it should take about three or four days.
For best results, begin with an application of galvanized metal etching primer view example on Amazon. Coat on the product with a synthetic polyester paintbrush, covering the full surface area before allowing the primer to cure for a minimum of four hours.
Next, apply percent acrylic exterior paint. The good news is that, when properly prepared, paint sticks very well to aluminum siding. And painting your home is much cheaper than replacing your siding. You can check for a chalky surface by simply running your hand across the surface of the siding and taking a look at your palm. If your hand is chalky then you have to remove the chalk before you paint.
This can be done by using an aluminum siding cleaning product that can be purchased at many home improvement stores along with a scrub brush or abrasive sponge and some good old fashioned elbow grease. These cleaning products are specially made to remove the layer of chalk from the surface of the siding clapboards. Mix a small amount of TSP — per the instructions on the box — with a gallon of water.
Usually about a cup per gallon will do the trick. Caulk around windows and doors. Small holes in the siding should be patched with a sandable, hydrophobic acrylic latex exterior filler.
Do not use wood filler. Patch large holes by cutting small sections of aluminum with shears, then applying them over the hole with exterior filler or gutter sealant. Attach the pressure washer to an outside faucet and to a GFCI outlet. Spray from the top downward. Never spray upward, as this may force water behind the siding. Remove large pieces of debris like spider webs, dirt, and dust. Do not use a fine-spray nozzle when pressure washing aluminum siding. The material is soft and can be dented or etched with a concentrated spray.
Mix up a cleaning solution. Wearing kitchen gloves, scrub the aluminum siding by hand, starting at the top. Use an extension ladder or 6-foot ladder to reach the top. Scrub areas that are about 3 feet wide. When you reach the bottom, rinse off the section. Move to an adjacent section and repeat. Mask off all sections that will not be painted. These may include windows, doors, outlets, lights, light switches, electric or gas meters, air conditioners, or mailboxes.
Use painter's tape for small areas. For large sections, use masking film attached with painter's tape. Lay down a drop cloth over pavement and foliage. Mix the primer well.
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