McPhystal writes in about turning a chalk board into a dry erase board… –
I’m a teacher and have been trying to convert old classroom chalk boards to dry-erase. I’ve tried epoxy spray paint, Krylon, and many other types of paint. I found that the best thing to do is to use oil-based/HIGH GLOSS paint to resurface the board. Essentially, the HIGH-GLOSS paint has very little porosity and does not allow the surface to be penetrated by minor solvents such as Dry-Erase Markers. I would use the following steps for converting a chalkboard to a dry-erase board…
- Prepare the surface with 400-Grade Sandpaper (you can use a lower number, but the surface will become increasingly coarse)
- Thoroughly dust the surface WITHOUT water (water will make any imperfections swell up, and you will have to wait for the board to dry [about 24-hrs] and re-sand the area)
- Apply a quality oil-based primer to the surface with a spray gun or aroller (allow full drying time as stated on paint can instructions).
- Apply two coats of the HIGH-GLOSS paint with a spray gun or roller and make sure to follow the reapplication instructions.
- Be patient. You need to give the paint about 2 weeks for the chemicals to bond well enough. It seems like a lot of work, but it’s actually quite cheap compared to a real dry-erase board.
Please keep in mind that this is for a permanent fix.
MAKE: Blog: $20 Dry erase board – Link.