Ask The Contractors
Ask The Contractors
Question: Sealing to Protect Granite and Quartz Countertops
I have a Quartz countertop installed in a bathroom. It is a solid surface product, so I was not expecting an unfinished underside, much like granite.
This is the Question:
Can you explain why the underside would be finished this way?

Is there anything I could do to clean Granite and Quartz to prevent dust & dirt from getting onto it?

When you have a countertop installed, the underside is unfinished. The upside, the top side is buffed out and polished and it looks just so beautiful. But not on the underside, where the edge is.

This is my favorite time of the show.
It’s when you can ask me your questions.

What I use to seal stone Granite and Quartz, Whitney is called Aqua Mix Sealers. And you can get a 32-ounce container for about $56 at your local hardware store or Home Depot or Lowes.

You simply put it on a rag and you wipe it on. It’s that easy and it just helps keep it sealed. Of course, you can get underneath to the exposed area where it’s not polished and put this sealer on it.

Sealing it will keep it nice, especially in a bathroom where you have steam all around. In fact, bathrooms get very wet with a lot of wear and tear. People getting in and out of the shower and splashing their faces in the sink.

So, sealing the under-mount of your countertop would not be a bad idea.

The World’s Most Famous Piece of Granite: Yosemite’s Half Dome

Another question I get asked quite often is, “What is the difference between Granite and Quartz?”


Granite is a very hard stone and is 100% natural. It’s mined from around the world and then cut down into manageable sizes. After that, the stone is then polished and brought out to your home after being cut to size. At last, ready to go.


Quartz is slightly different because its not 100% natural. Instead, the engineered countertops are manufactured using 90% ground natural quartz with 5% polymer resins.

Do they both Granite and Quartz Stone hold up?

“Yes, they do. Both Granite and Quartz are very strong.
I think it’s a matter of preference what looks good to you.”

Todd Bird, Host of

Here are some Kitchen & Bath Design Tips:

  • Have faith in yourself.
  • Search out what makes you feel the best.
  • Look at Open Homes in your neighborhood for ideas.
  • Walkthrough Model Homes at new subdivisions for a complete look
  • Check out the latest technology and updated, must-have products.

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