How to Store Shellac Properly for Long-Lasting Results
Shellac is a fantastic wood finish, but here’s the catch: it doesn’t last forever! Knowing how to store shellac properly is crucial to keep it fresh and effective. Proper storage is essential to extend its usability and maintain its effectiveness.
In this guide, we’ll walk you through the best practices for storing both pre-mixed and homemade shellac so you can get the most out of this versatile finish.
Why Proper Shellac Storage Matters
Did you know that shellac is made by dissolving resin flakes in denatured alcohol?
Using high-quality denatured alcohol ensures the best results when mixing or storing shellac. Over time, this alcohol evaporates, leaving behind a thickened mixture that won’t cure properly.
That’s why storage is everything!
Factors like heat, light, and air exposure can speed up this process, so proper storage is key.
Discover how to make shellac yourself.
How Long Does Shellac Really Last?
Pre-Mixed Shellac: Typically has a shelf life of 6-9 months. Check the manufacture date and use it within this time frame.
Homemade Shellac: Lasts about 6 months if stored properly. Make smaller batches to ensure freshness.
Best Practices for Storing Shellac
Following a few simple best practices will help to keep your shellac longer.
1. Use Airtight Containers
Seal shellac in airtight glass or metal containers to minimize alcohol evaporation. Pair this with premium denatured alcohol to maintain quality over time. Avoid plastic, as it can degrade over time. I personally save glass jars from jam and mayo for my homemade shellac.
2. Store in a Cool, Dark Place
Heat and sunlight are shellac’s worst enemies! Store it in a cool, dark place—a cabinet or shaded shelf works perfectly—to slow down evaporation.
3. Label with Mixing and Expiry Dates
For homemade shellac, label each container with the date it was mixed. This helps you track its freshness and avoid using expired shellac.
4. Reduce Airspace in the Container
As you use shellac, transfer it to smaller containers to reduce the amount of air inside. Less air means slower evaporation and a longer shelf life.
Explore the benefits of dewaxed shellac.
How to Store Shellac Flakes
Shellac flakes can last for years if stored properly. Here’s how to keep them fresh:
Use Airtight Containers: Store flakes in resealable plastic bags or glass jars to prevent moisture exposure.
Cool, Dry Environment: Moisture and humidity can cause flakes to clump. Keep them in a dry space, away from temperature fluctuations.
Avoid Direct Sunlight: Light exposure can degrade the flakes over time. A dark cabinet or box is ideal.
Label with Purchase Date: While flakes have a long shelf life, knowing their age ensures you use the freshest materials.
Discover how to make shellac yourself.
How to Test if Shellac Is Still Good
Not sure if your shellac is still good? Try this quick test:
Brush a thin layer onto a piece of scrap wood or glass.
Allow it to dry for about 30 minutes.
Check the surface:
If it feels tacky or doesn’t dry fully, the shellac has expired.
If it dries hard and smooth, it’s still usable.
Tips for Extending Shellac’s Shelf Life
Keep It Cool: Cooler temperatures slow evaporation, so aim for room temperature or lower.
Make Small Batches: For homemade shellac, mix only what you’ll use in 2-3 months. If your shellac thickens, rejuvenate it with high-quality denatured alcohol.
Avoid Frequent Openings: Each time you open the container, alcohol escapes. Minimize openings to preserve freshness.
Learn how to thin shellac for perfect application.
Final Tips for Storing Shellac
Proper storage can make a big difference in the longevity and performance of your shellac. Whether it’s pre-mixed or homemade, following these best practices ensures your finish remains fresh and effective. With just a little care, you can keep shellac ready for your next furniture refinishing project.
Looking for more shellac tips? Find out how many coats of shellac you need or Explore the colours of shellac.
Share your finished Shellac projects on social media or include in your comment below!
