Rather than use a dry erase board eraser use a microfibre cloth for erasing old notes.
Diy dry erase paint.
Spackle up any.
Prep the area by laying down plastic covering to protect walls and floors from paint drips.
Spray a primer on the metal if you plan on painting it.
To get a nice even coating make a second pass after allowing the initial layer to dry for about 15 minutes.
I needed one can to do a 4 x 6 5 area with a bit left over the board is cured after 2 days but i found it erases better if you leave it for another couple of days.
Before priming wipe off any dirt you notice on the metal.
Ideapaint clear is a transparent paint solution that deliver high performance dry erase functionality to smooth surfaces of any color clear transforms any room in your home into a space that will keep you and your family engaged entertained and connected this certified low emission virtually orderless paint can be applied over any type and any color interior paint or even wood to achieve a boundless dry erase canvas that seamlessly blends with any decor ideapaint is ideal for home offices.
Use a soft cloth dampened in water.
How to turn a wall into a dry erase board 1.
One can of dry erase paint sells for about 40.