[Mr.Brightstar]

I never said anything about chalk coming through,but I've seen it happen myself, maybe the guilty party used an excessive amount, but it has null advantages when adding it to drywall mud besides leaving something behind for different materials NOT to bond well with. How much testing have you done with chalkline and the different aspects of mud, primer, paints, lacquers, acrylics, latex's oil bases?

I recently use the Dewalt blue chalk. It is bolder/ darker than Ervin chalk. I have always used blue and never had any problems with bleeding through.