When you’ve spent hours perfecting a DIY project, the last thing you want is for it to wear out, scratch, or lose its charm over time. That’s where sealers and protectants come in! These finishes are the unsung heroes of DIY—they protect your hard work while enhancing its beauty. Over the years, I’ve tried many options, from Waterlox on my kitchen counters to wax on decorative furniture. If you’re unsure which to use, this guide will help you choose the best DIY sealers or protectants for all your DIY projects.
In my own projects, I’ve learned that the finish you choose can make or break the end result—literally! For example, when we sealed our butcher block kitchen counters, we used Waterlox because it provided the durable, water-resistant finish we needed for such a high-use surface. For smaller, decorative projects, I often turn to wax. The key is finding the finish that fits your project’s needs, and this guide will help you do just that.
How to Choose the Best DIY Sealers and Protectants for Your DIY Projects
Here are a few questions to ask yourself when selecting a finish:
- What type of project is it? Furniture, décor, or high-traffic surfaces like countertops?
- Will it be indoors or outdoors? Outdoor projects need weather-resistant finishes.
- What’s the desired look? Matte, satin, glossy?
- How durable does it need to be? Will it face water, heat, or heavy use?
- What’s the base material? Ensure compatibility with wood, metal, or paint.
Use the different sealer and protectant descriptions below to choose which will work best for each of your DIY projects.
What Are Sealers and Protectants?
Sealers and protectants are coatings applied to DIY projects to provide a durable, protective layer. They help preserve the appearance of your work and protect it from scratches, stains, moisture, and sunlight. They’re the finishing touch that keeps your project looking fresh and functional.
The Most Common Types of Sealers and Protectants
Wax
Wax is perfect for achieving a soft, matte finish, often used on chalk-painted furniture or decorative items. It’s easy to apply with a cloth or brush, but it doesn’t provide heavy-duty protection. Wax works best for low-traffic, decorative pieces like side tables or picture frames.
Best for:
Chalk-painted or decorative furniture.
Pros:
- Easy to apply: Wax is forgiving and simple to use with a soft cloth or brush, making it beginner-friendly.
- Enhances texture: It highlights natural imperfections and adds a subtle sheen for a rustic or vintage feel.
- Low odor: Unlike other finishes, wax doesn’t have a strong smell, making it suitable for indoor use.
Cons:
- Requires maintenance: Wax needs periodic reapplication to maintain its protective qualities.
- Low durability: It’s not suitable for high-traffic areas or surfaces exposed to moisture or heat, as it wears away quickly.
Polyurethane
Polyurethane is a heavy-duty finish that comes in both oil-based and water-based formulas. Oil-based polyurethane offers a rich, amber hue, while water-based dries clear, making it perfect for light-colored or white pieces.
Best for:
Floors, furniture, and heavily used wood surfaces.
Pros:
- Extremely durable: Provides a tough, long-lasting finish ideal for surfaces that see heavy use.
- Water-resistant: Protects against spills, making it a great choice for kitchen or bathroom surfaces.
- Versatile finishes: Available in gloss, satin, and matte to suit your project’s look.
Cons:
- Oil-based yellows over time: Not ideal for light or white finishes where clarity is important.
- Water-based can feel less durable: While easier to apply, it might not hold up as well in high-traffic areas.
Polycrylic
Polycrylic is a water-based alternative to polyurethane and is great for DIYers looking for an easy-to-apply finish that won’t yellow. It’s ideal for indoor projects, especially lighter-colored wood or painted pieces.
Best for:
Painted furniture, light woods.
Pros:
- Dries clear: Perfect for preserving light colors without adding a yellow tint.
- Low odor and easy cleanup: Its water-based formula makes application pleasant and cleanup simple.
- Fast drying: Cuts down on project time compared to oil-based finishes.
Cons:
- Less durable: Not as tough as polyurethane for high-traffic or heavy-use areas.
- Can streak: Requires careful application to avoid visible brush marks or uneven coverage.
Waterlox
Waterlox is a tung oil-based finish that penetrates deeply into wood, providing a rich, water-resistant seal. It’s an excellent choice for kitchen counters, butcher blocks, or high-use wood surfaces.
Best for:
Kitchen counters, butcher blocks, furniture.
Pros:
- Durable and water-resistant: Protects against spills and light scratches, making it ideal for food prep areas.
- Natural finish: Enhances the wood’s grain and color without appearing too shiny.
- Easy to maintain: Can be touched up or refreshed without sanding.
Cons:
- Strong odor during application: Requires proper ventilation while applying.
- Longer curing time: Full durability develops over time, so patience is needed.
Shellac
Shellac is a natural product that adds warmth and depth to wood. It’s commonly used in restoration projects but can also act as a sealer under other finishes.
Best for:
Antiques, fine furniture.
Pros:
- Dries quickly: Great for projects that need a fast turnaround.
- Eco-friendly: Made from natural materials, making it a greener choice.
- Easy to repair: Scratches or damages can be fixed by reapplying shellac in the affected area.
Cons:
- Not water-resistant: Avoid using it in areas exposed to moisture.
- Scratches easily: It’s not as tough as modern finishes like polyurethane.
Epoxy
Epoxy creates a thick, glossy finish that is waterproof and nearly indestructible. It’s ideal for projects like bar tops or resin art.
Best for:
Bar tops, countertops, resin projects.
Pros:
- Extremely durable: Stands up to heavy use, water, and impact.
- Waterproof: Perfect for surfaces exposed to spills or high humidity.
- High-gloss finish: Creates a glass-like appearance that enhances color and detail.
Cons:
- Tricky application: Requires careful mixing and pouring to avoid bubbles or uneven curing.
- Long cure time: Can take several days to fully harden.
FAQs
It’s generally not recommended to use wax over polyurethane or polycrylic. Wax doesn’t adhere well to these finishes and can cause peeling or unevenness. Instead, choose one or the other based on the desired look and level of protection.
Water-based polyurethane dries clear and has a lower odor, making it ideal for lighter woods or painted projects. Oil-based polyurethane, on the other hand, adds a warm, amber tint and is more durable, but it can yellow over time and has a stronger smell during application.
Polycrylic is a great choice for indoor projects and lighter finishes because it dries clear and is easy to work with. Polyurethane, especially oil-based, is more durable and water-resistant, making it better for high-traffic surfaces like floors and countertops.
Yes, epoxy can be used for wood furniture, particularly for tabletops or bar tops where a glossy, waterproof finish is desired. However, it can be tricky to apply, so be sure to follow instructions carefully to avoid bubbles or uneven curing.
If you notice streaks or bubbles, let the finish dry completely, then sand lightly with fine-grit sandpaper. Reapply a thin, even coat, ensuring the surface is clean and the applicator isn’t overloaded with product.
Yes, Waterlox Original Sealer/Finish is food-safe once it has fully cured, making it a great option for butcher blocks and kitchen counters. Always check the product label for specific food-safety details.
Varnish or spar urethane is ideal for outdoor furniture because they offer UV protection and withstand exposure to the elements. Make sure to choose a product labeled for exterior use.
While it’s possible to layer finishes, it’s crucial to ensure compatibility. For example, shellac can be used as a base coat under polyurethane, but wax should not be applied over most other finishes. Always test in a small area first.
Curing times vary by product. Wax may take just a few hours, while polyurethane or epoxy can require several days to fully cure. Check the manufacturer’s instructions for specific drying and curing times.
More DIY Finishing Ideas
- Painting Furniture: How to Paint Furniture
- How to Whitewash Stain
- How to Stain Wood – Step-by-Step Tutorial
- How to Get the Lime Wash Washed Wood Finish
- Grey Wash Wood Finish
- How to Make Wood Look Old in 3 Simple Steps
- How to Protect a Restoration Hardware Dining Table
- Best DIY Sealers and Protectants for Beautiful, Durable Projects
- The Best DIY Wood Finishes: Transform Your Projects with Style
Choosing the right sealer or protectant is the final (and critical!) step in any DIY project. The right finish doesn’t just protect—it transforms and elevates your work. Whether you’re sealing a rustic dining table or preserving a painted dresser, there’s a perfect option for your needs. With this guide, you’ll have the confidence to pick the best DIY sealer or protectant and keep your projects looking stunning for years to come. What will you seal next? Let me know in the comments—I’d love to hear!
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