IMPORTANT: Choose a paint shade that is lighter or close to the current color of your vinyl. If the paint passes both tests go ahead and paint. Burnish it with your fingers to ensure good adhesion then pull it off. Now put blue tape over the cross-hatched area. The X test should be done at the same time as the scratch test: Apply the paint as before then create a series of hatch marks over the paint twenty-four hours later with a standard razor.If the paint comes off either you haven’t washed it properly, you have the wrong paint or you will have to apply water-based primer paint. Paint that section, allow to cure for at least twenty-four hours then try and scratch it off with your fingernail. Scratch: Find a small section that won’t be seen or an offcut of siding.The purpose is to determine whether or not the paint you’ve chosen will adhere to your vinyl siding IMPORTANT: Do an adhesion test before proceeding with painting, either the scratch method or the X method. Primer doesn’t improve the adhesion of 100% acrylic paint to vinyl. Primer is only necessary if your vinyl siding is porous, pitted or the original color has completely worn away. Rinse with a garden hose as you go so that residue doesn’t re-adhere.Īllow to dry thoroughly. Be sure to direct the pressure washer stream straight on or angled slightly downwards: Avoid angling upwards and risk forcing water behind the siding. To prevent streaking start at the bottom and work up towards the top.Īlternatively use a pressure washer, carefully, with a cleaner. Be sure to rinse off thoroughly or the paint won’t adhere properly.Īccording to the Vinyl Siding Institute, the best way to clean vinyl is to use a soft cloth or an ordinary long-handled, soft bristle brush. Trisodium Phosphate E (E for Environmentally friendly) called TSP E is suitable for difficult stains and also helps prepare the surface to take paint. Pressure washers might damage the siding and won’t remove the chalky residue without a cleaner. Krud Cutter is another nontoxic pressure cleaning concentrate. Removes environmental pollution, dirt and grime from vinyl and aluminum siding, stucco, terra cotta roof tiles, painted wood, shake, shingle or panel siding.Chlorine and phosphate-free, non-toxic to plants and animals. Simple Green also makes a House and Siding Cleaner – Pressure Washer Concentrate
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