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20 Year Colour Lifetimes for Architectural Restoration Coatings - Theory and Reality

20 Year Colour Lifetimes for Architectural Restoration Coatings - Theory and Reality
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Highly engineered PVDF (polyvinylidene fluoride) based coatings have evolved over the years to meet the specific requirements of market segments. Over 50 years ago, high temperature-baked PVDF based finishes were introduced to the architectural community to protect the metal components of skyscrapers, stadiums, and other landmark structures. The multi-decade service life and extreme weatherability of these coatings is attested to by outdoor Florida exposure and demonstrated by performance on structures worldwide. 

Product Number: 51216-020-SG
Author: Kurt Wood, Quentin Boulay, Charles Weidner
Publication Date: 2016
Industries: Coatings and Linings , Coatings
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$20.00
$20.00

Highly engineered PVDF (polyvinylidene fluoride) based coatings have evolved over the years to meet the specific requirements of market segments. Over 50 years ago, high temperature-baked PVDF based finishes were introduced to the architectural community to protect the metal components of skyscrapers, stadiums, and other landmark structures. The multi-decade service life and extreme weatherability of these coatings is attested to by outdoor Florida exposure and demonstrated by performance on structures worldwide. Solvent borne “airdry” PVDF systems for field applied touch-up, repair, and restoration were developed in the 1980s. This technology has also demonstrated more than 20 years of excellent south Florida colour retention in those regions of colour space where weatherable inorganic pigments are available. Similarly, waterborne PVDF coating systems development followed. These air-dry or low temperature bake cure systems, have now surpassed 15 years of excellent weatherability in Florida. Recent advances in understanding the dynamics of weathering in PVDF-based coatings, based on extensive south Florida exposure data, indicate the way to attain 20-year colour lifetimes for both solvent and waterborne field-applied PVDF-based topcoats, even for some “bright colour” regions of colour space where organic pigments must be used. These findings are relevant not only to the restoration coatings market, but also to many segments of the protective coating market.

Highly engineered PVDF (polyvinylidene fluoride) based coatings have evolved over the years to meet the specific requirements of market segments. Over 50 years ago, high temperature-baked PVDF based finishes were introduced to the architectural community to protect the metal components of skyscrapers, stadiums, and other landmark structures. The multi-decade service life and extreme weatherability of these coatings is attested to by outdoor Florida exposure and demonstrated by performance on structures worldwide. Solvent borne “airdry” PVDF systems for field applied touch-up, repair, and restoration were developed in the 1980s. This technology has also demonstrated more than 20 years of excellent south Florida colour retention in those regions of colour space where weatherable inorganic pigments are available. Similarly, waterborne PVDF coating systems development followed. These air-dry or low temperature bake cure systems, have now surpassed 15 years of excellent weatherability in Florida. Recent advances in understanding the dynamics of weathering in PVDF-based coatings, based on extensive south Florida exposure data, indicate the way to attain 20-year colour lifetimes for both solvent and waterborne field-applied PVDF-based topcoats, even for some “bright colour” regions of colour space where organic pigments must be used. These findings are relevant not only to the restoration coatings market, but also to many segments of the protective coating market.

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