Which Types of Stone Need Sealing?

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?

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.


Marble

The most luxurious countertop material available, marble will instantly elevate your kitchen or bathroom, and all it requires is cleaning daily and sealing once a year to ensure its legacy.


Granite

This super tough and very popular choice in kitchens and bathrooms is probably the one that comes in the largest selection and most of them aren't true granites. The term granite is more of a commercial term for igneous stone, and what that means is that some granites will be very porous and others not. To be safe it is better to seal them at least once.


Quartzite

The king of countertops, quartzites combine the natural beauty of marble with the toughness of granite. This stone is super resistant to scratching and when properly polished, its glassy luster is a hit in any room. It is recommended to seal it at least once to avoid damaging the gloss


Dolomite

Just like quartzite, dolomite is also requires sealing at least once after the installation to protect it and preserve it for the future. The value of a home is certainly increased with the maintenance and upkeep of stone countertops.


Never Sealed Stone Countertops Before? Here’s How:

First up, thoroughly clean the countertop with a stone-safe cleaner.

Then grab the sealer and spray it onto the stone in two-to three-foot sections.

Immediately wipe it into the counter with a clean, lint-free cloth, followed by buffing until dry.

The end result is a mirror-smooth shine protected from the elements.


The Water Test: Know If Your Stone Countertop is Sealed

Place a small drop of water on your stone countertop and observe its surface tension (the tendency of liquid surfaces to shrink into the minimum surface area possible).

If the the stone countertop is sealed, the water's surface tension will be high enough to allow the drop to roll on the stone.

If the water drop breaks tension, that might be an indication that your stone countertop is not sealed or that it is time to apply the sealer again!




Source: HDTV

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