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.
Repaint cement siding exterior.
Most acrylic latex paints will work on the majority of popular exterior home surfaces including wood siding brick fiber cement stucco and eifs engineered insulation finishing system.
Acrylic paint is the best choice for cement board.
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.
Also sand any glossy surfaces to make them dull.
All of that is compounded by the sheer difficulty cost and extended timeline for painting a home s exterior making the question of the perfect exterior paint finish a critical one.
A regular medium size paintbrush enables you to achieve good coverage when painting corners and edges whether you re working with an interior or exterior space.
Painting cement asbestos siding or non asbestos fiber cement siding is in part a cosmetic decision.
When repainting fiber cement siding pressure clean with a minimum of 2100 psi pressure to remove all dirt dust grease oil loose particles foreign material and defective coatings.
If you re repainting hardie plank or fiber cement siding you ll first need to clean your home s exterior.
A pressure washing is necessary to remove chalking the old paint dusty oxidation residue from sunlight exposure.
Your home s exterior is subjected to major stresses that include rain snow uv rays and physical wear.
Rinse thoroughly and allow to dry.
For cement boards that have already been primed 100 acrylic exterior paint is recommended.
Prefinished siding arrives painted and ready for installation so it doesn t require a paint job or other preliminary maintenance.
A pressure washing will also remove dirt dust mold and mildew.
We have rarely seen this material in a worn friable condition but should that occur one might paint the surface also to stop fiber shedding and to preserve the material.
Roll on more paint to.
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.
It will increase the roughness of the surface of the board.
Brand new fiber cement siding arrives prefinished factory primed or unprimed.
It s especially important if you are working with new cement board to avoid oil based primer.