Painting Cement Fiberboard Siding

Clean the cement board with a pressure washer.

Painting cement fiberboard siding.

Use satin finish paint even though it costs more. Brand new fiber cement siding arrives prefinished factory primed or unprimed. All you should have to do is rinse your siding use a garden hose no pressure washers here to clean off any dust or dirt. Products like hardiplank fiber cement siding will require regular painting to maintain their beautiful appearance unlike other sidings such as brick or insulated vinyl.

Step 1 clean the fiber cement siding in order to properly seal the fiber cement siding it needs to be completely free of dust and debris. Some factory painted siding panels are available and come with up to 15 year warranties that cover peeling cracking and chipping. Do not paint a cement board unless you have thoroughly cleaned it first or you may have problems with adhesion. Prefinished siding arrives painted and ready for installation so it doesn t require a paint job or other preliminary maintenance.

Cement boards also known as hardie boards are a type of fiber cement siding. If you are installing new siding finish all the cut edges and the planks with cement board compatible primer. Place the fiber cement siding on top of the sawhorses and brush away with a broom. There are two common versions for use on homes apartment buildings or commercial structures.

Whether you ve got a colorplus finish or custom paint on your existing hardie siding you don t have to use primer when re painting hardie. A pressure washing is necessary to remove chalking the old paint dusty oxidation residue from sunlight exposure. Finish all the cut edges of the cement boards with a primer that s recommended for fiber cement boards. This is due to the fact that fiber cement does not soak in the painting products like cedar pine or other wood siding products.

This version allows you to paint the fiber cement siding in whatever color scheme you choose after installation. A pressure washing will also remove dirt dust mold and mildew. Do not prime the siding it comes pre primed use 100 acrylic paint caulk transitions where fiber cement meets trim use a quick dry flexible paintable caulk that is designed to bond to fiber cement and your trim material smooth caulk with your finger. To help your paint adhere to the fiber cement siding and to get the most uniform looking finish on your paint job the best practice is to apply one coat of a quality exterior latex stain blocking or masonry primer to all of the siding.

If there s material left on the fiber cement siding it can cause voids in the painting which gives an access point for water. Factory primed siding has already been primed by the manufacturer so you ll just need to add one or two coats of paint. The good news is hardie siding is easy to repaint.