| Pressure treated wood is protected against insects and decay but we still recommend applying a water-repellent sealer to exposed surfaces as soon as construction is completed. This sealer will help reduce surface checking, cracking and splitting and help maintain an attractive appearance. Periodic reapplication is recommended. Follow the manufacturers recommendation. The wood should be surface dry before applying topical water-repellant sealers.
Southern Pine should be dry before any finish or coating is applied. If your deck was constructed with lumber that was not kiln-dried after treatment (KDAT) you should allow the material to dry before painting, staining or sealing. Pressure treated Southern Pine will accept a finish similar to untreated Southern Pine.
For fully exposed decks, a water-repellent sealer or a penetrating semi-transparent stain may provide the best finishing solution. Special formulations made specifically for decks are available. Because paint and solid color stains are more likely to peel they are not recommended for the decking (walking surface) of fully exposed decks. Check with a reputable full-service paint and finishing supplier in your area for recommendations. See Sealers & Finishes for Pressure-Treated Lumber. Other helpful web sites with deck maintenance and finishing tips include Decks.com and Superdeck Products.
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