(781) 793-0700

How do I know if my granite needs to be sealed?

Apr 19, 2017

There is a lot of controversy over whether or not you need to seal marble and granite counter tops, and if so, how often. First you should do this simple test to see if your stone is already sealed. Bear in mind that the ability to absorb sealer in the first place is due to the porosity of the stone and this varies from stone type to type.

How to test if your marble or granite need to be sealed:

  1. pour a tablespoon of regular tap water onto the counter and let it sit for 10-15 minutes
  2. Wipe away water with a dry cloth
  3. Is there a darkening of the stone?
  4. If there is darkening, your counters could use some sealer.
  5. If color hasn’t changed, the stone is sealed.

Most granite is very dense and doesn’t need as much sealer nor does it need to be reapplied often. Certain granite such as Black Absolute shouldn’t be sealed at all. Marble, especially the lighter colors, are more porous and will  benefit from sealing. Just remember sealer DOES NOT PROTECT against etching, sealer will only protect from staining. Stains from red wine, and the like won’t darken the stone if it is protected, but anything acidic can “etch” or erode the  surface of stone leaving a ring or water mark.
For information on how to protect against etching follow this  link to learn about Clearstone coating.
https://bostonstonerestoration.com/clearstone-marble-protector/

Get your project quoted today

Related posts

Holiday Tips for Maintaining Marble and Natural Stone When Entertaining

If you have Marble or Natural Stone in your home, this is a must-watch video to help keep your...

Can you restore old marble?

In a word, yes. We see it all the time. Someone buys an older home or a classic office building...

How to Remove Scratches From Marble

Boston, Massachusetts & New England Marble Restoration, Repair and Polishing Services We see...

Which Stone Countertop is Best for Your Kitchen?

Choosing a kitchen countertop can be a challenging process. Not only will it impact the look of...

Marble, Beyond White

If it seems like everyone is using white marble in their home renovation projects you are not...

Spring Cleaning: Whole House Stone Restoration Services

This spring has been nearly 2 years in the making. A spring where graduation parties return, where...

Ask the Experts Vol. 2: Outdoor stone restoration & is my marble ruined?

Welcome to the second episode of Boston Stone Restoration's Ask the Experts! In this episode...

Emperador Marble Foyer Restoration in Marion, Massachusetts

Sometimes you just have to face it. That gorgeous marble foyer has seen better days. Maybe it’s...

Antique Mosaic Tile Floor Revealed: Forest Hills Cemetery

For stone restoration pros, nothing is more fun than getting to problem solve on really old stone...

Vol. 1 Ask the Experts! What are the brown stains on my marble and matte vs. honed finishes

Welcome to the first episode of Boston Stone Restoration's Ask the Experts! In this episode Boston...