Wood Putty or Wood Filler: Which One Should You Use?
Introduction
When it comes to repairing wood surfaces, the debate between wood putty and wood filler often confuses DIY enthusiasts, woodworkers, and homeowners alike. While both serve the purpose of filling holes, cracks, and imperfections in wood, their applications, durability, and finish vary significantly. Choosing the wrong one could result in subpar results, wasted effort, and even damage over time.
In this detailed guide, we’ll explore the key differences, uses, benefits, and drawbacks of wood putty vs. wood filler, so you can make an informed decision for your next woodworking or home improvement project.
Understanding Wood Putty and Wood Filler
What is Wood Putty?
Wood putty is a pliable material used primarily for filling small gaps, cracks, and nail holes in finished wood surfaces. It is oil-based or latex-based, meaning it doesn’t dry out completely but remains somewhat flexible over time.
What is Wood Filler?
Wood filler, on the other hand, is a water-based or solvent-based compound that hardens after application. It is ideal for unfinished wood projects where sanding and staining are necessary.
Key Differences: Wood Putty vs. Wood Filler
| Feature | Wood Putty | Wood Filler |
|---|---|---|
| Composition | Oil-based or latex-based | Water-based or solvent-based |
| Hardening | Does not fully harden | Hardens completely |
| Best for | Finished wood | Unfinished wood |
| Sandable | No | Yes |
| Paint/Stain | Cannot be stained easily | Can be stained |
| Flexibility | Flexible | Rigid |
| Indoor/Outdoor Use | Better for outdoor use | Best for indoor use |
| Water Resistance | Water-resistant | Not waterproof (unless sealed) |
When to Use Wood Putty vs. Wood Filler
When Should You Use Wood Putty?
✔️ If your wood surface is already painted or stained.
✔️ For minor repairs on furniture, trim, and wooden floors.
✔️ If flexibility is needed, as putty expands and contracts with wood.
✔️ For outdoor applications, since wood putty resists moisture better.
When Should You Use Wood Filler?
✔️ If you are working with unfinished wood.
✔️ When you need to sand and stain the surface after repair.
✔️ For deep holes, cracks, and gaps that require a permanent fix.
✔️ If structural integrity is important, such as fixing broken furniture legs.
Advantages and Disadvantages
Advantages of Wood Putty:
✅ Stays flexible and does not crack.
✅ Available in various colors to match wood tones.
✅ Resistant to moisture and outdoor conditions.
Disadvantages of Wood Putty:
❌ Cannot be sanded or stained effectively.
❌ Takes longer to dry compared to wood filler.
❌ Oil-based versions may emit strong odors.
Advantages of Wood Filler:
✅ Dries hard and can be sanded for a smooth finish.
✅ Can be stained or painted to match wood color.
✅ Strengthens and reinforces damaged wood.
Disadvantages of Wood Filler:
❌ Not as flexible as wood putty, which may cause cracking over time.
❌ Not waterproof unless properly sealed.
❌ May shrink if applied too thickly.
How to Use Wood Putty and Wood Filler Properly
Steps to Apply Wood Putty:
1️⃣ Clean the damaged area to remove dust and debris.
2️⃣ Use a putty knife to apply a small amount of wood putty.
3️⃣ Smooth it out and remove excess material.
4️⃣ Let it dry (this may take a few hours).
5️⃣ Touch up with matching stain or paint if needed.
Steps to Apply Wood Filler:
1️⃣ Clean the surface and ensure it is dry.
2️⃣ Use a putty knife or scraper to apply the filler.
3️⃣ Overfill slightly to account for shrinkage.
4️⃣ Let it dry completely.
5️⃣ Sand the area for a smooth finish.
6️⃣ Apply stain, sealant, or paint.
Choosing the Right Product: Best Wood Putty and Wood Filler Options
Best Wood Putty Products:
✔️ Minwax Wood Putty – Great for furniture touch-ups.
✔️ DAP Plastic Wood Putty – Durable and available in different shades.
✔️ Timbermate Wood Putty – Smooth finish and easy to work with.
Best Wood Filler Products:
✔️ Elmer’s Carpenter’s Wood Filler – Ideal for general repairs.
✔️ Bondo Wood Filler – Strong and durable.
✔️ FamoWood Latex Wood Filler – Water-based and stainable.
FAQs About Wood Putty and Wood Filler
1️⃣ What is the difference between wood putty and caulk?
➡️ Wood putty is for filling small holes and cracks in wood, while caulk is used to seal gaps between materials like wood and drywall.
2️⃣ Can I use wood putty on hardwood floors?
➡️ Yes, but it should match the floor color since it cannot be sanded.
3️⃣ How do you remove dried wood filler?
➡️ Sand it down or use a chisel for tougher spots.
4️⃣ Can wood filler hold screws?
➡️ Not recommended. Use epoxy-based filler for structural fixes.
5️⃣ Does wood filler shrink?
➡️ Yes, especially water-based fillers. Apply in layers to avoid excessive shrinkage.
6️⃣ Can you use wood putty outdoors?
➡️ Yes, wood putty is moisture-resistant and better for outdoor use.
7️⃣ Which is better for deep holes?
➡️ Wood filler is better since it dries hard and provides structural support.
8️⃣ Does wood filler work on MDF?
➡️ Yes, but use a high-quality filler that won’t crumble.
9️⃣ Can I stain wood filler to match wood color?
➡️ Yes, but the results may not be perfect. Test before applying.
10️⃣ How long does wood putty last?
➡️ It remains flexible indefinitely, but oil-based putties can dry out over time.
Conclusion
Choosing between wood putty and wood filler depends on your project’s needs. If you’re working with finished wood and need flexibility, go with wood putty. If you’re repairing unfinished wood that requires sanding and staining, use wood filler. Understanding these key differences will help you make the best choice for a long-lasting, professional finish.
Got more questions? Drop a comment below! 🚀