Soapstone Sealer – All-Natural Protection for Stone Surfaces
$12.99 – $36.99
Protect and enrich your stone surfaces naturally with the Soapstone Sealer by RMP Finishes. This premium, plant-based formula is designed for those who value both performance and purity:
- Food-contact safe
- All-natural & vegan-friendly
- No VOCs or harsh chemicals
- Versatile protection
- Natural matte finish
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Soapstone Sealer – All-Natural Surface Protector
Finally, a truly all-natural, earth-friendly sealer for soapstone and other porous surfaces. The Soapstone Sealer by RMP Finishes enhances and protects countertops without harsh chemicals or the constant reapplication that mineral oil requires. Ideal for kitchens, bathrooms, and any natural stone finish.
Perfect for use on:
- soapstone,
- marble,
- granite,
- slate,
- concrete,
- natural stone slabs,
- and honed (non-polished) surfaces.
Coverage
- 4 oz. covers 50 sq. ft.
- 8 oz. covers 100 sq. ft.
- 16 oz. covers 200 sq. ft.
Choosing our Soapstone Sealer means choosing lasting protection, natural ingredients, and effortless maintenance. Here’s what makes it stand out:
- All-Natural Formula
- Made entirely from food-grade walnut oil and T1 carnauba wax, without synthetic additives or petroleum derivatives.
- Vegan & Eco-Friendly
- 100% plant-based ingredients that are safe for both your home and the environment.
- No VOCs or Harsh Odours
- Free from solvents and volatile organic compounds, ensuring a safer indoor application.
- Food-Safe Finish
- Approved for use on kitchen countertops and cooking surfaces without risk of contamination.
- Low-Lustre, Non-Fading Finish
- Enhances the natural beauty of soapstone and other stones without adding unwanted gloss.
- Heat-Resistant Protection
- Withstands everyday kitchen temperatures without breaking down or discolouring.
- Long-Lasting & Easy Maintenance
- Cures naturally to create a durable surface that doesn’t require frequent reapplication.
- No Sticky Residue
- Unlike mineral oil, the drying oil formula cures fully, preventing transfer or smudging.
Step-by-Step Directions
1. Prepare the Surface
- Ensure your countertop is unfinished, honed, and absorbent.
- If it was previously coated with mineral oil or any glossy finish, clean thoroughly using hot water and mild dish soap or RMP Finishes Citrus Solvent™.
- Let the surface dry completely before applying.
2. Apply the Sealer
- Scoop a small amount of Soapstone Sealer onto a lint-free cloth and rub it over the surface in thin, circular motions until evenly covered.
- Allow it to soak in for 15–30 minutes, then wipe off any excess with a clean cloth, applying firm pressure for a smooth, even finish.
3. Let It Cure
- Leave the surface to sit overnight, then allow 5–7 days of curing time before regular use.
- For best results, keep the area free from standing water and objects to maintain airflow.
- Full cure occurs within 10–15 days, creating a durable, low-lustre finish.
4. Maintain the Surface
- Clean using mild soap and water only, and avoid acids or harsh cleaners.
- Reapply in high-use areas as needed; low-traffic zones may stay protected for years.
For Soapstone Sinks and Basins:
Follow the same steps, allowing a minimum 10–15-day curing period before use for optimal water resistance and even protection.
Can I use Soapstone Sealer on polished stone?
No. The sealer is designed for honed or raw porous surfaces. Polished stone won’t absorb the product properly, so it’s best suited for matte or unfinished finishes.
How often should I reapply Soapstone Sealer?
Most surfaces stay protected much longer than a traditional mineral oil treatment. However, in areas of frequent use (like around sinks or prep zones), you can reapply a thin coat as needed to refresh the protective layer. Typically, a light annual refresh is common.
What makes this different from mineral oil?
Mineral oil is a non-drying petroleum product that fades over time and can transfer onto other surfaces – including food!). The Soapstone Sealer, by contrast, is a drying oil and wax blend that cures naturally, creating a durable, non-toxic, long-lasting finish.
Will the Soapstone Sealer eventually go rancid?
No. The walnut oil used in the sealer is a drying oil, meaning it reacts with oxygen to polymerize and cure (harden). It forms a tough, durable, and cured finish long before it has a chance to spoil or go rancid, ensuring a stable and long-lasting protective layer.
Does it change the color of the stone?
The Soapstone Sealer enhances the natural depth and richness of your stone without creating an artificial shine. The result is a subtle, low-lustre finish that highlights the stone’s organic beauty.
Ingredients
At RMP Finishes, we believe in full transparency. You deserve to know exactly what’s in every product you use in your home, and our Soapstone Sealer is made from just a few safe, natural ingredients you can trust.
Made with:
- Walnut Oil – FDA-approved for food-contact surfaces, this natural drying oil penetrates deeply to protect and enrich stone.
- T1 Carnauba Wax Flakes – A plant-based wax that adds a subtle sheen and durable topcoat without synthetic additives or petroleum.
About Walnut Oil and Allergies
We understand that some customers may have concerns about walnut oil and allergies. While no product can be guaranteed to be completely risk-free, polymerized walnut oil used in our formula has a very low likelihood of causing allergic reactions.
Here’s why:
- Allergic responses are typically triggered by proteins, which are minimal or inactive in polymerized walnut oil.
- During manufacturing, the oil is heated and cured, a process that helps neutralize any residual proteins.
- Once applied and cured, the oil polymerizes into a solid, inert finish, further reducing any potential for sensitivity.
If you have a severe nut allergy, we recommend consulting your physician before using this or any product containing walnut derivatives.
Safety Data Sheet
| Property | Details |
| Product Name | Soapstone Sealer |
| Brand | RMP Finishes |
| Base Ingredients | Food-grade Walnut Oil, T1 Carnauba Wax Flakes |
| Finish | Low-lustre, natural matte |
| VOC Content | 0 g/L – No VOCs |
| Odour | Low, natural scent |
| Cure Time | Initial cure: 5–7 days; full cure: 10–15 days |
| Coverage | Approximately 125–175 sq. ft. per 8 oz, depending on surface porosity |
| Surfaces | Soapstone, marble, slate, granite, concrete, natural stone (honed only) |
| Food Contact Safe | Yes – FDA-approved ingredients |
| Vegan-Friendly | Yes – 100% plant-based, no animal products |
| Heat Resistance | High – suitable for kitchen use |
| Storage | Store in a cool, dry place; keep container tightly sealed |
| Shelf Life | 2+ years if stored properly |
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Order FAQ’s
Shipping is calculated based on the weight and destination of your specific order. We have flat-rate shipping options available for the orders inside the contiguous USA. We also offer Free Shipping on orders over $75 (within the contiguous US; some exclusions apply). You can get an instant estimate using the shipping calculator on the cart page.
Yes, we ship to many locations worldwide! To see if we can deliver to your country, simply add your desired items to the cart and use the Shipping Calculator on the Cart Page. By entering your country and postal code, you can instantly see if delivery is available to your region and get an accurate cost estimate.
Are duties and taxes included?
To make international shopping as seamless as possible, we calculate and collect all applicable shipping costs, duties, and taxes during checkout. This means your order is pre-cleared through customs, and you won’t have to worry about any unexpected “pay-on-delivery” fees or surprise bills when your package arrives.
We want you to love your project results! We accept returns on unused and unopened merchandise.
- Money Back: Initiate within 14 days of delivery.
- Store Credit: Initiate within 30 days of delivery.
- Please note: Shipping costs are non-refundable.
Click here to read our full Returns & Refunds Policy.
Because finishes can be heavy or fragile, we handle damages on a case-by-case basis. If a container arrives leaking or broken, please take a photo of the package and contact us immediately at [email protected] or use our chat or call at (800) 339-9748 so we can make it right.
P.s. Have your order number handy so we can quickly find your order on our end.
We love talking shop! You won’t get a machine when you call us. Reach out to our team of “real people” for product choice help, expert application advice, or troubleshooting. You can reach us via our chat, email at [email protected], or call at (800) 339-9748.
We’re in office Monday – Friday from 9am-4pm CST. If we miss your message, we will get back to you as soon as possible!
Yes, we have a network of retailers across the United States and internationally. Check our Store Locator to see if there is a shop near you.