HARDBOARD

Not Painted Before and not Primed/To Be Painted

a. Surface Preparation:

• carefully clean off any dirt with water and a soft bristle brush

b. Priming:

• priming is necessary
  
• use a quality latex exterior primer that is recommended for hardboard siding
  
• prime immediately after installation; or pre-prime before installation
  
• prime all edges, including where possible those cut as part of installation
  
• priming will maximize resistance to wax bleed and swelling; and minimize mildew growth
  
• do not leave a primer unpainted

c. Painting:

• use top-of-the-line exterior 100% acrylic latex house paint in flat, satin, semigloss finish, depending on appearance desired
  
• satin paints are less vulnerable to wax bleed through than are flat paints (particularly "economy" flat products)