Protecting your investment in cedar structures requires careful consideration, and understanding the nuances of Thompson Water Seal products is essential. Proper application, a service Lowe’s often provides, can significantly extend the life of your wood. This article delves into the expert techniques necessary when applying thompson water seal on cedar, covering everything from surface preparation to the specific types of sealants recommended by professionals and organizations like the Forest Products Laboratory.
Image taken from the YouTube channel Thompson’s WaterSeal , from the video titled Stain Your Deck in Two Simple Steps: Thompson’s WaterSeal Signature Series Stain & Sealer .
Thompson Water Seal on Cedar: A Professional Guide
This article provides a comprehensive guide to effectively using Thompson Water Seal on cedar, ensuring optimal protection and longevity for your wood projects. It addresses common concerns, clarifies best practices, and offers practical tips for achieving a professional-looking finish.
Understanding Thompson Water Seal and Cedar
Before applying any sealant, it’s crucial to understand the properties of both Thompson Water Seal and cedar wood.
What is Thompson Water Seal?
Thompson Water Seal is a widely available water repellent designed to protect wood from moisture damage, including warping, cracking, and rotting. It’s generally available in oil-based and water-based formulas. This section should briefly discuss the pros and cons of each type concerning cedar.
Why Cedar Needs Protection
Cedar is naturally rot-resistant due to its inherent oils. However, prolonged exposure to the elements can still lead to:
- Color fading and graying
- Surface checking (small cracks)
- Moisture absorption and potential swelling
Applying a sealant like Thompson Water Seal enhances its natural defenses.
Cedar Types and Thompson Water Seal
Mentioning specific types of cedar can also be beneficial (e.g., Western Red Cedar, Eastern White Cedar). Different cedar types have varying densities and oil contents, which can affect the sealant’s absorption and performance. Briefly discuss if there are any cedar species that should NOT be treated with Thompson Water Seal.
Preparing Cedar for Thompson Water Seal
Proper preparation is paramount for a successful application and long-lasting results.
Cleaning the Cedar Surface
- Remove Debris: Sweep away any loose dirt, leaves, or cobwebs.
- Wash the Cedar: Use a mild soap and water solution, scrubbing gently with a soft brush. Avoid harsh chemicals or power washing, as they can damage the wood fibers.
- Rinse Thoroughly: Ensure all soap residue is removed.
- Allow to Dry Completely: This is critical. Cedar should be completely dry before applying Thompson Water Seal (typically 24-48 hours, depending on weather conditions). Use a moisture meter for accuracy if possible; the wood should be at or below the moisture content recommended on the Thompson Water Seal product label.
Repairing Damaged Cedar
- Replace Severely Damaged Pieces: If any cedar boards are severely rotten or cracked, replacing them is the best option.
- Fill Small Cracks and Holes: Use a high-quality wood filler specifically designed for exterior use. Allow the filler to dry completely and sand smooth before applying the sealant.
Sanding (Optional)
- Sanding can create a smoother surface for the Thompson Water Seal to adhere to, but is not always necessary, especially with rough-sawn cedar.
- If sanding, use a fine-grit sandpaper (e.g., 120-180 grit) to avoid damaging the cedar.
- Always sand in the direction of the wood grain.
- Remove all sanding dust before applying the sealant.
Applying Thompson Water Seal to Cedar
This section provides detailed step-by-step instructions for applying the sealant.
Choosing the Right Application Method
Thompson Water Seal can be applied using:
- Brush: Ideal for smaller projects and intricate areas. Provides good control and penetration.
- Roller: Suitable for larger, flat surfaces. Offers even coverage.
- Sprayer: The fastest method for large areas. Requires careful technique to avoid runs and drips.
The article should detail the pros and cons of each method and recommend the best choice depending on project size and experience level.
Application Steps
- Read the Product Label: Carefully review the Thompson Water Seal product label for specific instructions, drying times, and safety precautions.
- Test in an Inconspicuous Area: Before applying the sealant to the entire project, test it in a small, hidden area to ensure it produces the desired result.
- Apply a Thin, Even Coat: Avoid applying too much sealant, as this can lead to drips and runs. Apply in the direction of the wood grain.
- Allow to Dry Completely: Follow the manufacturer’s recommended drying time. This may vary depending on the weather conditions.
- Apply a Second Coat (Optional): A second coat can provide additional protection, especially in areas with high exposure to the elements. Allow the first coat to dry completely before applying the second.
Addressing Common Application Issues
| Issue | Solution |
|---|---|
| Drips and Runs | Wipe away excess sealant immediately with a clean cloth. |
| Uneven Coverage | Apply additional sealant to the affected areas, blending carefully. |
| Bubbles | Gently brush over the bubbles to release the air. |
| Sticky Residue | This usually indicates that too much sealant was applied. Clean with mineral spirits. |
Maintenance and Reapplication
Thompson Water Seal is not a permanent solution and will need to be reapplied periodically.
Assessing the Sealant’s Condition
- Water Beading Test: Observe how water beads on the surface. If water no longer beads up and is absorbed into the wood, it’s time to reapply.
- Visual Inspection: Check for signs of fading, cracking, or peeling.
Reapplication Frequency
The frequency of reapplication depends on factors such as:
- Weather conditions
- Sun exposure
- Type of Thompson Water Seal used
- Cedar type
Generally, reapplication is recommended every 1-3 years.
Preparing for Reapplication
Follow the same preparation steps as before, including cleaning the cedar surface and repairing any damage. Sanding may be necessary if the previous coat is peeling or flaking.
Safety Precautions
Working with Thompson Water Seal involves certain safety considerations.
Ventilation
- Always work in a well-ventilated area.
Protective Gear
- Wear gloves to protect your skin from contact with the sealant.
- Wear eye protection to prevent splashes from entering your eyes.
- Consider wearing a respirator, especially when spraying.
Disposal
- Dispose of used sealant and applicators properly according to local regulations. Do not pour sealant down the drain.
Troubleshooting
Common Problems and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Sealant not penetrating | Cedar is too wet. | Allow the cedar to dry completely before applying the sealant. |
| Sealant is peeling or flaking | Improper preparation or incompatible product | Remove the old sealant and reapply after proper preparation. |
| Mold or mildew growth | Insufficient sealant or poor ventilation | Clean the affected area and reapply the sealant after addressing the cause. |
| Change in cedar wood color | Sealant alters the natural wood color | Test in an inconspicuous area first. |
Thompson Water Seal on Cedar FAQs
Here are some frequently asked questions about using Thompson Water Seal effectively on cedar, along with tips to ensure a long-lasting and beautiful finish.
Is Thompson Water Seal a good choice for cedar?
Thompson Water Seal can be used on cedar, but it’s important to understand its limitations. It’s a water repellent, not a preservative, and might not offer the same long-term protection as some other sealants specifically designed for cedar. Proper preparation and application are key to getting the best results with thompson water seal on cedar.
How do I prepare cedar before applying Thompson Water Seal?
Thoroughly clean the cedar surface to remove any dirt, mildew, or existing finishes. Allow the cedar to dry completely before applying Thompson Water Seal. Lightly sanding the surface can also improve adhesion of the thompson water seal on cedar.
How many coats of Thompson Water Seal should I apply to cedar?
Typically, one coat of Thompson Water Seal is sufficient for cedar. Applying multiple coats can actually hinder penetration and lead to a milky or uneven finish. Always follow the manufacturer’s instructions for the best results with thompson water seal on cedar.
How often should I reapply Thompson Water Seal on my cedar?
The reapplication frequency depends on weather exposure and the initial application quality. Generally, you should reapply Thompson Water Seal every 1-3 years to maintain water repellency and protect the cedar from the elements. Regularly inspect the surface for signs of water damage to determine when reapplication of thompson water seal on cedar is needed.
So, that’s the lowdown on using thompson water seal on cedar like a pro! Go forth and seal with confidence – your cedar will thank you for it!