Dangers Of Pressure-Treated Wood. Deck wood paint brush CBS/AP Share; Tweet Reddit Flipboard Email Citing health risks, this week the EPA halted the production of some pressure-treated wood -- the
Weather wreaks havoc on unprotected wood, even pressure-treated pine, tropical hardwoods, cedar, redwood, and others that are resistant to rot and insect damage. Moisture, whether from rain, snow, or humidity, causes problems like raised grain, cupping, and splitting.
For fully exposed decks, a water-repellent sealer or a penetrating semi-transparent stain may provide the best finishing solution, even on wood that has been pressure treated with preservatives. Special formulations made specifically for decks are available.
The wood on a new deck needs to dry thoroughly before sealing or staining. If the wood came still wet with preservative, allow it to dry about 30 days before applying stain or sealer.
The pros and cons of cedar wood for a deck. If the natural look of wood is tops on your list, use cedar for wood decking. The heartwood of the tree (the deeper colored red part, not the white sap part) is rot resistant.
Keep wooden decks, Pressure-treated lumber can last 20 years or more, and most pressure treated wood comes with a residential and agricultural limited warranty. ACQ/CA vs. MCA Pressure Treated Wood See details on the two primary types of pressure treated wood in the following chart.
Even if your deck is made of pressure-treated lumber, redwood, cedar, or some other durable species, it's at risk the moment the last nail is driven home. There are several culprits. Moisture swells the wood while the burning rays from the sun dry and shrink it, causing cracks and checks while also encouraging warping.