Why Treat Cedar Wood?
Even though cedar is naturally durable, treating it provides added protection:
- Extends the life – Treating cedar wood helps it last longer against weathering, moisture damage, UV rays, fungal decay and insect infestation. This maximizes its lifespan.
- Maintains its beauty – Untreated cedar will turn gray and crack over time. Proper treatment preserves the rich color and smooth surface.
- Prevents warping and cupping – Treatment reduces moisture absorption, preventing the wood from warping, splitting and cupping.
- Saves money – Spending a little on treatment avoids the high costs of frequent replacement of untreated cedar. It’s a value-for-money investment.
How to Prepare Cedar Wood for Treatment
Proper prep work ensures maximum treatment effectiveness:
- Allow the wood to acclimate to the environment where it will be used for at least 5-7 days. This stabilizes its moisture content.
- Inspect carefully and discard any pieces with knots, signs of decay, cracking or warping. Only use defect-free wood.
- Cut, plane and sand the wood to the required sizes and shapes before treatment. Avoid machining after treatment as it exposes untreated interior wood.
- Clean thoroughly to remove any dirt, dust or surface debris. Mildew or mold should be killed with a fungicide.
- Allow the wood to dry completely as treatment works best on wood with moisture below 15%.
What to Use for Treating Cedar Wood
These are excellent treatment options for cedar:
- Clear wood sealers – Provide basic protection against moisture, sunlight and mildew. Penetrate well and are easy to apply.
- Tung oil – Works as a natural water repellent while enhancing the wood grain. Maintains surface texture and allows the wood to breathe.
- Bleaching oils – Contain pigments that add color while lightly protecting the wood. Great for accenting the grain.
- Spar urethanes – Offer maximum protection from sun, rain and moisture. Require more prep work but give long-lasting defense.
- Oil-based stains – Penetrate deep to protect while allowing the texture and grain to show. Available in various tints and shades.
How to Apply Treatment on Cedar Wood
Follow these steps for hassle-free application and optimal results:
Clean and Prepare the Surface
- Use a stiff brush or sandpaper to remove any dust, debris or loose material.
- Check for mildew, mold or algae growth. Kill with fungicide if present.
- Sand lightly with 120-180 grit sandpaper to improve absorption. Avoid over-sanding.
- Wipe clean using a damp cloth and allow to dry completely before treating.
Read Manufacturer’s Instructions
- Follow all directions specified for preferred products like dry time, number of coats, tools, etc.
- Pay attention to hazard warnings and take necessary precautions.
Apply First Coat Evenly
- Use a paintbrush, roller, pad applicator or sprayer. Ensure full and uniform coverage.
- Maintain a wet edge and orient your strokes along the wood grain.
- Coat all surfaces – sides, edges and end-grain. Ends tend to absorb more.
- Allow first coat to dry as specified before applying the next coat.
Add Second and Third Coats
- Lightly sand and wipe clean between coats for maximum adhesion.
- Build up layers for increased protection and color uniformity.
- Allow final coat to cure fully before exposing wood to weather or heavy use.
Clean Tools Promptly
- Clean equipment like brushes and rollers in the appropriate solvent after use.
- Properly dispose of rags, dropcloths and other oily materials to prevent fire hazards.
- Store any leftover treatment as per directions for reuse later.
Maintenance and Care After Treatment
To maximize the results of your treatment efforts:
- Inspect routinely for any signs of damage, erosion, mold or mildew. Spot treat if required.
- Lightly sand and apply fresh coats as needed to maintain protection. Reapply every 1-2 years.
- Clean treated surfaces periodically with mild soap and water. Avoid harsh chemicals.
- Keep wood free of standing water or moisture buildup to prevent mold, warping and decay.
- Consider supplemental protection like water-repellent sealers or UV-resistant finishes for added durability.
Properly treating cedar wood requires careful prep work, the right products and proper application. But the time invested pays off with lumber that keeps its beauty and structural integrity for decades, while avoiding costly replacements. With the right treatment and care, cedar can serve you reliably for generations.
Frequently Asked Questions
How long does cedar treatment last?
With proper application and maintenance, most treatments will last 1-2 years on cedar wood. Factors like exposure levels, weather and usage impact longevity. Reapply fresh coats annually for best results.
Can I use paint or solid stain on treated cedar?
Yes, you can apply paint or solid stains over treated cedar for added color and water protection. Use high quality exterior-grade products and follow manufacturer’s directions.
Should I treat cedar before or after construction?
It’s best to treat boards prior to construction. This allows full penetration into all sides. Treat again after building for protection of exposed surfaces and joints.
What is the benefit of polyurethane over other treatments?
Polyurethane forms a durable plastic-like film over the wood that provides superior water, UV and scratch resistance. The trade-off is it can crack over time and requires more prep work.
How do I get rid of black spots on my treated cedar?
Black spots are usually a fungal growth called pinewood stain. Use a mix of bleach and water or a commercial fungicide. Lightly sand and reapply your treatment after.
Conclusion
Treating cedar lumber is a smart investment for anyone building outdoor structures or furniture from this beautiful and versatile wood. Proper preparation, using quality protective products and applying treatments correctly ensures cedar keeps its integrity and appeal for long-lasting service and enjoyment in outdoor environments. With the right maintenance strategy, you can expect treated cedar projects to last for decades.