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Withdrawn HPDs

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  1. Internal Wood Stabilizer/Timber Pro Coatings/2025-06-24

    Internal Wood Stabilizer/Timber Pro Coatings/2025-06-24

    Cover of Internal Wood Stabilizer — open the PDF

    Open the PDF · HPD 41064

    Expiration Date: 2028-06-24

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    Internal Wood Stabilizer (IWS) reacts with wood to form a subsurface waterproof gel that hardens to a crystalline barrier, making wood permanently non-absorbent to water and other liquids. This reduces the internal moisture of wood…

  2. Ember Guard/Timber Pro Coatings/2025-06-24

    Ember Guard/Timber Pro Coatings/2025-06-24

    Cover of Ember Guard — open the PDF

    Open the PDF · HPD 41065

    Expiration Date: 2028-06-24

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    Ember Guard is an ASTM E84 Class A fire retardant. It is a clear, colorless penetrating formula applied to bare wood of any species with a two coat process. Ember Guard is permanent and needs no re-application. It has zero VOCs and forms a…