Painting Hardiplank Siding: How To Paint Hardiplank Without Voiding Your Warranty

James Hardie building products are an excellent brand to use for your home siding purposes. HardiePlank, or HardiPlank as they're occasionally referred to, is durable fibercement board siding that is meant to last through the most extreme weather and temperature conditions.

What many customers love most about HardiPlank siding is how versatile it is. In addition to being strong enough to withstand the majority of the elements, HardiPlank material can mimic the appearance and texture of wood, leaving a beautiful finish. HardiPlank siding installations can also be performed with Hardie board material that comes in a wide variety of natural coloring, as well as preselected ColorPlus technology to create an array of beautiful, natural home siding options that simply require installation for a gorgeous finish.

How to Paint HardiPlank

Now, while ColorPlus technology already provides homeowners and commercial property owners a beautiful home siding product, James Hardie's fibercement board siding can also be painted by the homeowner if they choose to change or touch up the color. While this makes your options easier, it's important to understand there are still special guidelines which need to be considered for best results of HardiePlank painting projects.

Paint HardiePlank siding within the warranty specifications. Your warranty clearly states that primed Hardi siding needs to be painted within 180 days, or roughly 6 months, of installation. If your siding is unprimed, then you're allowed 90 days, or about 3 months, to have the surfaces painted. Failure to follow these guidelines will cancel out your warranty.

Use the right paint and materials for the job. The company highly recommends the use of their PrimePlus product to prime your home siding. PrimePlus is specially formulated to for use on fibercement siding, such as that of your James Hardie siding. After your surface is properly primed, it's best advised that you purchase 100 percent acrylic exterior paint for your home, as acrylic paint is best suited for fiber cement, stone and stucco exterior painting.

Avoid the temptation to stray from using proper painting materials to get the job done. For example, do not use oil based paint in order to paint your building. Oil based paints on unprimed fiber cement will result in undesirable effects. These effects include:

  • increased surface roughness
  • loss of adhesion
  • cracking
  • excessive chalking.

James Hardie does not suggest the use of oil based paints over unprimed fiber cement siding. Stains containing linseed oil are specifically designed for wood and are not considered suitable for fiber cement siding products, whether primed or unprimed.

More Tips for Painting HardiePlank Material

Make sure all of your caulking is completed, and that all of your rough, and cut ends are primed when possible. A good Hardi installer will prime every cut where it is possible before installing. Additionally, make sure that you complete a complete washing of the HardiPlank exterior prior to painting. This increases the durability of the paint job and helps to maintain the finish by preventing premature peeling and chipping.

You have a choice of various finishes to use for your home exterior painting. Many users say Satin finish, while very shiny at first, is best because it will maintain a new a fresh look as the shine wears down. With time, it will continue to look new with minimal maintenance, even more so than simply using a Flat finish, which will look better initially but appear duller over time.