Treatment for cement composite articles

A cement fiberboard substrate is treated on at least one edge of the substrate with an aqueous solution containing at least one phosphorus acid or salt of a phosphorus acid. The treated edge is overcoated with a sealer, primer or topcoat. The resulting prefinished fiber cement siding product has imp...

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Bibliographische Detailangaben
Hauptverfasser: VETTER GLEN O, UBEL ANDREW, EVANSON KEVIN W, HERFINDAL LARRY L, MITTELSTEADT JOHN W, TURNER HEIDI M
Format: Patent
Sprache:eng
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Zusammenfassung:A cement fiberboard substrate is treated on at least one edge of the substrate with an aqueous solution containing at least one phosphorus acid or salt of a phosphorus acid. The treated edge is overcoated with a sealer, primer or topcoat. The resulting prefinished fiber cement siding product has improved coating adhesion, especially near burnished regions and near edges and corners proximate the burnished regions. A phosphorus acid or salt of a phosphorus acid also may be added to the sealer to provide further improvement in coating adhesion.