Hey,
I installed Hardiboard siding on our new house and called Hardi corp. to ask if their primed siding was sufficiently primed before we painted. They assured me it was as long as it was installed within 6 months. l also used a recommended paint of Hardie corp. from Lowes called Valspar Premium acrylic latex.
This paint covers real well but I'm having a "blending" problem overall and it looks terrible!!

Hardi is blaming the paint and Valspar is blaming the siding. I don't know what to do next. Has anyone seen this before? Enclosed pic is when the paint was dry.

I'm Jeff Bartos, a technical support supervisor at Valspar. I came across your comments about Valspar Premium Acrylic Latex paint and I am sorry you haven't had the outcome you hoped for with this particular project. We truly believe in our products and would like to speak more with you about your experience to see if we can help with some suggestions to correct the problem.

Please feel free to call our technical support department at 888-313-5569, ask for me, and we can discuss in greater detail. We look forward to hearing from you.