Which Types of Stone Need Sealing?

Updated: Nov 18

There are many details to consider when deciding on a countertop material for your kitchen or bathroom, from cost to durability to appearance. One factor you don’t want to overlook is what happens after installation? Will your countertop require consistent maintenance or do you want something that needs no attention? There are thousands of countertop materials to choose from, and some require more a little love to ensure a long life.

Why Do Stone Countertops Need Sealing?

There are thousands of different of Natural Stones in the market and some of them have very low porosity while others are more porous. Nowadays most stones slabs are sealed in the factory before polishing in a process called "resin treatment". This process upgrades Natural Stones' mechanical features making them more resistant than they would have been in their natural state. On top of that, after your stone is cut into a countertop and installed, you can seal it with an 'impregnator sealer" containing resins molecules that are transported by water or solvents to penetrate the stone's surface at a greater depth, creating a protective seal and barrier from liquid stains.

Which Types of Stone Need Sealing?

For some stones sealing is strongly recommended while other it may not. We like to recommend sealing every stone to our customers because the cost is very low compared to the benefits. But before you dive into a big countertop project, let’s look at some of the most popular countertop surfaces that need regular sealing, to help gauge what material fits best with your home and lifestyle.