If you’re working on a landscaping project or refreshing your outdoor space, you might be wondering: “Can you use Joint-It Porcelain Epoxy Grout on natural stone?” It’s a great question, and one that can save you from making an expensive mistake.
In this article, we’ll explain exactly why Joint-It Porcelain Epoxy Grout is not suitable for natural stone paving, and what you should use instead.
Is Joint-It Porcelain Epoxy Grout suitable for natural stone paving?
No, you should not use Joint-It Porcelain Epoxy Grout with natural stone paving.
This product is specifically designed for porcelain tiles and slabs, which have very tight, narrow joints, usually 1–3mm wide.
In contrast, natural stone paving typically has wider and more irregular joints, which require a jointing product that can flex slightly and fill deeper gaps without cracking or shrinking.
Why Joint-It Porcelain Grout Isn’t Suitable for Natural Stone
Let’s look at why Joint-It Porcelain Epoxy Grout isn’t the right choice for natural stone:
1. Joint Size and Flexibility
Porcelain paving is machine-cut with uniform edges, so the joints are consistent and narrow.
Natural stone often has hand-cut or split edges, leading to uneven joints, often 5mm+ wide, which epoxy grout isn’t designed to fill.
2. Different Absorption Rates
Porcelain is non-porous and doesn’t absorb moisture.
Natural stone is porous, and using epoxy on its surface can lead to staining or hazing, especially if it’s not pre-sealed properly.
3. Application & Clean-Up
Epoxy grout sets quickly and is harder to clean from textured natural stone surfaces.
It’s best suited to smooth, porcelain finishes where clean-up is easier and the finish is flawless.
What Should You Use for Natural Stone?
If you’re grouting natural stone paving, you need a product made for wider joints and porous surfaces.
We recommend:
Joint-It Simple: a ready-mixed, brush-in jointing compound designed for natural stone, concrete, and block paving.
Why Joint-It Simple Works:
Fills wider joints with ease
Durable and weather-resistant
Allows water to drain through naturally
Easy to apply: no mixing or special tools needed
Safe for use on sandstone, limestone, granite, and more
Pro Tip: Clean Before You Seal or Grout
Before grouting, always make sure your patio is clean and dry. Use:
Joint-It So Clean to remove dirt and black spots
Joint-It Algae Remover to kill algae and moss
Clean paving helps your jointing compound bond properly and last longer.
Can You Use Joint-It Porcelain Epoxy Grout on Natural Stone?
- No, Joint-It Porcelain Epoxy Grout should not be used on natural stone.
- The joint sizes, surface texture, and absorption of natural stone require a different product.
- For best results, use Joint-It Simple for a professional finish that lasts.
