Why Sealing Sandstone Is Essential for Long-Lasting Beauty and Protection

Sealing sandstone protects it from moisture, stains, algae, salt attack, and UV fading. Whether you’re maintaining a new installation or restoring an older surface, using a professional-grade sealer makes a significant difference. TSSPro Sealants, protect, porous sandstone surfaces from weather and wear

Sandstone is a popular choice for patios, pool coping, walkways, and even interior accents because of its warm tones and natural texture. But as beautiful as it is, sandstone is also one of the most porous and vulnerable types of natural stone. Without proper sealing, sandstone quickly absorbs water, stains easily, and begins to deteriorate. That’s why sealing your sandstone with the right product from TSS Pro is one of the best ways to preserve its beauty and extend its life.

Check out our online store and see what our TSS Pro 150 can do for your bluestone and other sandstone surfaces.

Understanding Sandstone’s Porosity and Risks

Unlike denser stones like slate or granite, sandstone has an open grain structure. This means:

• Water and oil easily soak in
• Dust and dirt collect in crevices
• Algae and moss can thrive in shaded, damp areas
• Saltwater and chlorine can degrade the surface
• UV rays can cause discoloration and fading over time

If sandstone is not sealed, these problems can take hold within just a few months. And once stains or mold set in, cleaning can be very difficult,  sometimes even impossible.

Benefits of Sealing Sandstone

Sealing your sandstone with TSS Pro products offers more than just surface protection. You get:

• Water resistance – Helps prevent freeze/thaw cracking and water damage
• Stain protection – Blocks oil, grease, rust, and food stains
• Easier cleaning – Dirt and debris rinse off more easily
• Algae & mold resistance – Keeps shaded areas cleaner and safer
• UV protection – Prevents color fading from sun exposure
• Longer lifespan – Reduces erosion, flaking, and surface weakening

In short, sealing helps your sandstone stay beautiful and strong, year after year.

Recommended TSS Pro Sealers for Sealing Sandstone

TSS Pro has developed several sealants that are highly effective on sandstone. The best option depends on your goals:

➡️ Explore the TSSPro sandstone sealers
➡️ Read more about TSSPro100WB here

Where Is Sandstone Commonly Used?

Sandstone is a soft and workable stone that lends itself well to both functional and decorative applications. You’ll commonly find it in:

• Patios and garden walkways
• Outdoor seating areas
• Pool coping and surrounding decks
• Retaining walls
• Driveways and entryways
• Interior fireplaces or feature walls

Because of its ability to trap heat and moisture, it’s especially important to protect sandstone surfaces in pool areas or damp environments.

Applying TSS Pro Sealers to Sandstone

To get the best results when sealing sandstone:

1. Clean thoroughly – Use a stone-safe cleaner and allow it to dry completely
2. Apply evenly – Use a pump sprayer or roller, depending on surface texture
3. Watch for absorbency – Sandstone may require a second coat depending on porosity
4. Let it cure – Avoid heavy traffic or water contact for 24–48 hours
5. Test with water – Water should bead on the surface when properly sealed

TSSPro100 and TSSPro100WB are particularly effective for sealing sandstone by preserving the stone’s natural appearance while providing water and stain protection. For older or faded sandstone, TSSPro500 offers a subtle color boost without gloss.

Stone Cleaner

How Long Does a Seal Last?

A professionally applied TSS Pro sandstone sealer typically lasts:

• 3 to 5 years on horizontal outdoor surfaces
• Up to 7 years on vertical or shaded areas
• Longer indoors, especially in low-traffic zones

The actual lifespan depends on weather exposure, foot traffic, and the type of sealer used. Reapplication is easy and doesn’t require stripping the old layer.

Signs It’s Time to Reseal Your Sandstone

If you’re not sure whether your sandstone needs resealing, look for these signs:

• Water no longer beads on the surface
• The stone looks darker or discolored after rain
• Mold or algae growth returns quickly after cleaning
• Stains begin to set more easily
• Surface feels chalky or dusty

When in doubt, a quick water test can confirm. Pour a small amount of water on the surface. If it darkens and absorbs immediately, it’s time to reseal.

Eco-Friendly Options for Sensitive Areas

If your sandstone is near plants, ponds, pets, or kids, VOC compliance becomes a priority. TSSPro100WB is the go-to water-based option that delivers strong performance with lower environmental impact. It’s ideal for:

• Courtyards
• Zen gardens
• Enclosed patios
• Indoor sandstone applications

Takeaway

Sandstone brings timeless beauty to any landscape,  but it requires protection to stay that way. Sealing sandstone with a trusted product like TSSPro100, TSSPro200, or TSSPro500 ensures that you keep the stone’s natural character intact while shielding it from the elements.

Don’t wait for moisture, mold, or stains to take hold. Give your sandstone the long-lasting care it needs with a TSS Pro Sealer formulated specifically for porous surfaces.

Have questions about which sealer is right for your sandstone project? Contact our team or explore our complete product line for expert protection you can count on.