All brands are reformulated every year and all manufacturers deny that they are reformulated. There is really no way to know for sure how long a coating will last because all manufacturers lie and there are no exceptions. A paint that is good one year may not be so good the next year and that is just how the painting industry is. There is no one paint maker that I can say I have used every year for the past 20 years. There is no one brand that I can say is my trusted brand. They have all let me down at one point or another and I have learned that there is nothing I can do about it....it is just the nature of the painting industry, and maybe any industry? It's all about the cash when you break it all down.

I thought that Duration was the big winner for Hardie Board, but I was recently pleased with C2 Direct To Substrate for some I painted about a month ago. Will it hold up for 2 years or more? Heck if I know.

I would use Benjamin Moore MoorGuard exterior. I found it to be very good and last very long. It's expensive but if your not paying for it then go for it!

The warranty of the paint doesn't mean much if the fibercement isn't dusted prior to painting it. The slightest bit of dust will cause adhesion problems. Where does the dust come from? The cutting and installation creates a lot of dust.

Be sure it's dust free before proceeding. If they exceed the time limit of 180 days exposure, you must prime again before painting. All field cut edges, butts, corners,etc., must be primed or painted to protect warranty coverage.

I would paint mine with two coats of SW Resilience in satin sheen.

Michael

Thank you for the dusting tip. SW is Sherwin Williams?