How to Paint Slate Siding
- 1). Powerwash the siding using a 1500 PSI powerwasher. Move the powerwasher along the house in small, even strokes and make sure not to leave the nozzle in one place for too long; extended exposure to the force of the machine can damage the shingles. Allow two to three sunny days for the shingles to completely dry.
- 2). Purchase an exterior latex paint from a local hardware store or paint shop. A regular exterior latex will work on slate siding; no special paints are required for the job.
- 3). Apply the paint to a small paint roller and use the roller to apply the paint to the shingles. Work slowly, painting one shingle at a time and making sure to apply paint into the small crevices around the tops and bottoms of the shingles.
- 4). Take extra care to hit every inch of the shingle since the shingles sometimes overlap a bit. Continue until all shingles have been painted. Allow 24 hours for the paint to dry.
- 5). Repeat the painting process when applying a second coat of paint to the slate shingles. Slate shingles almost always need a second coat to cover the natural properties of the materials beneath it.
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