Should I Use Treated Lumber or Cedar?
If you’re a homeowner in Metro Denver planning a home improvement project—whether it’s building a new deck, fence, pergola, or garden bed—one of the first questions you’ll face is: Should I use treated lumber or cedar? Both materials have their strengths, but the choice depends on your project needs, budget, and Colorado’s unique climate.
At Front Range Lumber Company, serving Metro Denver and Northern Colorado, we’ve helped countless homeowners and contractors make the right wood choice for lasting, beautiful results. Here’s what you need to know about the differences between treated lumber and cedar for your upcoming projects.
What Is Pressure-Treated Lumber?
Pressure-treated lumber is wood that has been infused with chemical preservatives to protect against rot, decay, and insects. It’s typically made from pine or fir and is a popular choice for outdoor construction because of its durability and affordability.
In Metro Denver’s climate—with dry air, hot summers, snowy winters, and occasional freeze-thaw cycles—pressure-treated lumber offers excellent resistance to ground moisture and insect damage, making it ideal for structural uses such as deck framing and fence posts.
Find out more about Pressure Treated Lumber - including available sizes, types of treated lumber, tips on using treated lumber, useful links, and more.
What Is Cedar Lumber?
Cedar is a naturally rot-resistant and insect-repellent wood species prized for its beauty, aroma, and straight grain. It ages gracefully from a warm reddish hue to a grey shade that many homeowners love. Cedar doesn’t require chemical treatment because of its natural oils, making it a great option for projects where appearance and sustainability matter.
Front Range Lumber is an Authorized RealCedar Dealer - RealCedar Website.
Cedar is especially popular for fence pickets, garden boxes, pergolas, and outdoor furniture in Metro Denver, where its natural durability stands up well to the sun and dry conditions.
Find out more about Cedar Lumber - including available sizes, grades of cedar, cedar species, how-to videos, and more.
Key Differences Between Pressure-Treated Wood and Cedar.
| Feature | Treated Lumber | Cedar |
|---|---|---|
| Durability | Excellent, especially in ground contact | Very good, best above ground |
| Resistance to Insects/Rot | Chemical preservatives | Natural oils and resins |
| Appearance | Greenish or brown tint, less decorative | Warm reddish-brown, attractive |
| Cut | Generally smooth sawn | Generally rough sawn |
| Cost | More affordable | Higher cost |
| Weight | Varies | Varies |
| Maintenance | Should be sealed or stained | Benefits from UV-protective sealants |
| Environmental Impact | Contains chemicals, not recommended for food contact like raised garden beds | All-natural, food-safe for planters |
Which Wood Should You Choose for Your Project?
- Choose pressure-treated lumber if you need:
- Long-lasting structural support like deck framing or fence posts
- Wood that contacts the ground or is exposed to moisture
- A budget-friendly option for large projects
- Choose cedar if you want:
- Beautiful, natural wood for visible parts of fences, pergolas, or furniture
- A chemical-free option, especially for garden beds and planters
- Wood that ages naturally with less risk of warping
Tips for Maximizing Wood Longevity in Colorado.
- Always seal or stain your lumber to protect against UV damage and moisture. We recommend and sell Penofin Stains which comes in a broad spectrum of colors.
- Let your lumber acclimate to local weather before installation.
- Consider a hybrid approach: use treated for the structural base and cedar for the more visible surfaces.
- Schedule routine maintenance every couple of years to keep your wood looking and performing its best.
Why Choose Front Range Lumber Company?
With two convenient locations in Lakewood and Fort Lupton, Front Range Lumber is the Front Range's trusted source for quality building materials for over 60 years!
Our knowledgeable staff can help you select the best product for your home project, offer expert advice, and provide delivery right to your home or job site.
Have questions?
Contact us online, or stop by one of our locations for expert advice. You can also give one of our locations a call:
LAKEWOOD: 1741 S. Wadsworth Blvd.📞 303-988-5980
FORT LUPTON: 805 14th Street 📞 720-683-7162
Build Smarter, Build Stronger with Front Range Lumber Company.
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