Simple UV protection for containers
Its really simple, you need a good Exterior Acrylic paint in 2 colors.
1. First coat - Flat black, used as a primer, will block the UV rays from getting to the plastic, or whatever you are wanting protection on.
2. Second coat - A flat light colored Earthtone, will reflect the sunlight, and keep from overheating your soil-less mix.
Other paints you can use as a 1st coat are rubber or asphalt based.
But don't forget to do some simple painting preperation:
1. Rough up the surface with fine sandpaper to give the smooth surface a tooth for the paint to grab onto.
2. Next, wash with a degreaser, Ivory dish soap and water, rinse well.
Terry
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