**Dallas Decks: Is Pressure-Treated Wood Crashing Lungs?**
By Franklin Everett ShawThe aroma of a freshly grilled burger, the laughter of friends, the gentle sway of a porch swing – these are the hallmarks of a perfect Dallas summer evening. But lurking beneath the surface of that beautifully stained deck could be a hidden danger: the very wood it’s made from. Pressure-treated lumber, while designed to resist rot and insects, can leach harmful chemicals into the environment and potentially pose health risks to you and your family.
This isn’t about scare tactics; it’s about informed choices. We’re going to delve into the specifics of pressure-treated lumber in Dallas, Texas, focusing on the potential health hazards, practical DIY solutions, and safer alternatives. Let’s ensure your outdoor oasis remains a haven, not a hazard.
Pressure-treated lumber, commonly used for decks, fences, and other outdoor structures, is infused with chemical preservatives to protect it from decay and insect infestation. The most common preservative used in the past was chromated copper arsenate (CCA), which, as the name suggests, contained arsenic. While CCA is now largely phased out for residential use, older decks in Dallas may still contain it. The current standard preservative is typically alkaline copper quaternary (ACQ) or copper azole, which still contain copper.
The primary concern with pressure-treated lumber is the leaching of these chemicals, particularly arsenic and copper, into the surrounding environment. This leaching can occur through direct contact with the wood, rainwater runoff, or even through the air as the wood ages and breaks down.
Arsenic, even in small amounts, is a known carcinogen. Exposure can occur through skin contact, ingestion (especially for children playing on or around the deck), or inhalation of dust from sawing or sanding the wood. Copper, while less toxic than arsenic, can still cause gastrointestinal issues and skin irritation.
Dallas’s hot and humid climate exacerbates the leaching process. The intense sun and frequent rainfall accelerate the breakdown of the wood and the release of chemicals. This is particularly concerning for homes near White Rock Lake or other bodies of water, as runoff can contaminate these ecosystems.
So, what can a Dallas homeowner do to mitigate these risks? The first step is to identify if your deck is made from older CCA-treated lumber. Look for a stamp on the wood that indicates the type of preservative used. If you’re unsure, err on the side of caution and treat it as if it contains CCA.
Next, sealing your deck is crucial. A high-quality penetrating oil-based sealant, specifically designed for pressure-treated lumber, will create a barrier that prevents chemicals from leaching out. Apply two coats, allowing each coat to fully dry before applying the next. Reapply the sealant every one to two years, depending on the weather exposure.
Cleaning your deck regularly is also important. Use a mild soap and water solution to remove dirt and debris that may contain leached chemicals. Avoid using harsh chemicals or power washers, as these can damage the wood and accelerate the leaching process.
When working with pressure-treated lumber, always wear gloves, a dust mask, and eye protection. This is especially important when cutting or sanding the wood. After handling the wood, wash your hands thoroughly with soap and water.
Proper disposal of pressure-treated lumber is essential. Do not burn it, as this releases toxic fumes into the air. In Dallas, treated wood waste should be disposed of at designated landfills that accept this type of material. Contact the City of Dallas Sanitation Services for information on proper disposal methods and locations.
One common mistake homeowners make is using the wrong type of sealant. Water-based sealants are generally less effective at preventing chemical leaching than oil-based sealants. Another mistake is neglecting to reapply the sealant regularly. The sealant will wear down over time, especially in Dallas’s harsh climate, so regular maintenance is crucial.
Another challenge is dealing with older decks that may already be heavily contaminated. In these cases, simply sealing the deck may not be enough. Consider replacing the deck with a safer alternative, such as composite decking.
Composite decking is made from a combination of recycled plastic and wood fibers. It’s resistant to rot, insects, and fading, and it doesn’t require staining or sealing. While the initial cost of composite decking may be higher than pressure-treated lumber, it can save you money in the long run due to its low maintenance requirements and long lifespan.
Several brands of composite decking are available in Dallas, including Trex, TimberTech, and Fiberon. Each brand offers a variety of colors, styles, and price points. Research and compare different brands to find the best option for your needs and budget.
When comparing costs, consider the total cost of ownership, including the cost of materials, installation, and maintenance. Pressure-treated lumber may be cheaper upfront, but the cost of sealing, cleaning, and eventual replacement can add up over time. Composite decking, on the other hand, may have a higher initial cost but lower long-term costs.
For example, a 16’ x 20’ deck using pressure-treated lumber might cost $3,000 in materials initially. However, sealing every two years at $200 per application over 20 years adds another $2,000. Replacement after 15-20 years could add another $3,000. A similar-sized composite deck might cost $6,000 initially, but require minimal maintenance, potentially saving thousands over its lifespan.
Beyond the health and environmental benefits, composite decking also offers aesthetic advantages. It’s available in a wide range of colors and styles, and it can be designed to mimic the look of real wood. It also resists fading and staining, so your deck will look beautiful for years to come.
Making informed decisions about your deck is crucial for the health and safety of your family and the environment. By understanding the potential risks of pressure-treated lumber and taking steps to mitigate those risks, you can enjoy your outdoor space with peace of mind. And by considering safer alternatives like composite decking, you can create a beautiful and sustainable outdoor living area that will last for years to come. Remember to consult with local Dallas building codes and regulations before starting any deck construction or renovation project.