ADDITIONAL TIPS FOR SPECIFIC BUILDING MATERIALS

BARE WOOD
Any wood that has weathered more than a few weeks should be thoroughly sanded. Remove all gray coloration on the surface and dust thoroughly. Follow the same procedure for any wood exposed by peeling paint. Prime the bare wood with a quality latex or oil-based exterior primer formulated for wood.

TREATED LUMBER
It is important to allow treated lumber to cure before painting, in order to allow moisture from the treatment process to evaporate. It typically takes several weeks after construction, depending on the dimensions, humidity levels, and other weather factors. This is especially important if you're using oil based primers and paint products. Sand away any shiny mill glaze on wood, dust and prime and paint or stain promptly.

ALUMINUM SIDING
You're likely to encounter a chalky residue on weathered aluminum siding which can be removed by scrubbing with a mild detergent and rinsing, or power washing. A second treatment may be needed. Any white oxide should be scrubbed away with a non-metallic scouring pad like Scotch Brite, and then rinsed with water. Apply a latex metal primer to bare metal or oxidized areas before painting.

IRON, STEEL, GALVANIZED METAL
To prepare these metal surfaces, remove as much existing rust as possible with a wire brush. Then clean the surface. The appropriate primer is a corrosion inhibitive latex or oil-based formulation applied according to the manufacturer's directions. When brushing be sure to use protective goggles, clothing and a mask or respirator.

MASONRY
Loose paint, dirt , sand, and efflorescence (residue from water infiltration) should be removed with a stiff wire hand or power brush. If there is efflorescence present, find and eliminate the water source. Smooth concrete surfaces should be etched with a muriatic acid solution. Follow manufacturer's instructions and safety precautions carefully and rinse thoroughly. Apply a sealer or primer recommended for masonry if surface is less than a year old or is very porous.