Rohm and Haas Paint Quality Institute

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Prep, prime and Paint
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Hardboard

Not Painted Before but Factory Primed/To Be Painted

  1. Surface Preparation:
    • clean off any dirt with a detergent and water mixture; rinse thoroughly
  1. Priming:
    • priming is recommended for maximum resistance to wax bleed, swelling and mildew, even though the surface is pre-primed
    • use quality exterior latex primer 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
    • do not leave a primer unpainted
  1. 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

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