Getting a stain out of granite

Granite is porous enough to take a stain and dense enough to give it back.

A stain sitting on top of sealed granite is rarely permanent, since the sealer is doing exactly the job it is supposed to do, and most household stains can be pulled back out with the right approach and a little patience.

Figuring out what kind of stain it is

Oil-based stains from cooking grease or hand lotion tend to darken the stone, while acidic stains from wine, coffee, or fruit juice usually leave a duller, sometimes slightly discolored patch rather than a dark shadow.

Knowing which type you are dealing with matters, because the fix for an oil stain and the fix for a stain from an acidic liquid are not quite the same process.

The baking soda poultice method

For most household stains, mix baking soda with a small amount of water into a thick paste, spread it directly over the stain about a quarter inch thick, and cover it with plastic wrap taped down at the edges.

Let the poultice sit for a full day so it has time to draw the stain up out of the stone's pores, then wipe it away and check the spot, repeating once more if a shadow remains.

Oil stains need a different pull

For a grease or oil stain, the same baking soda and water poultice works, or acetone can stand in for the water, since acetone breaks down oil more effectively and helps the poultice pull the stain out.

Avoid using bleach-based cleaners anywhere near a stain you are trying to treat, since mixing cleaning chemicals on stone can cause a reaction that does more harm than the original stain.

What not to do

Skip vinegar, lemon juice, or other acidic home remedies on granite entirely, since granite tolerates them better than marble does but repeated acid exposure still breaks down the sealer over time and leaves the stone more open to future stains.

Do not scrub aggressively with an abrasive pad, which can dull the polish around the stain and leave a rough patch that stands out worse than the original mark.

When the stain will not lift

If a stain has been sitting for a long time before you noticed it, or if the original seal was already worn thin, a single poultice treatment may not fully clear it, and that is when a professional re-polish makes sense.

We can assess whether a stubborn stain needs a deeper poultice treatment or a light re-polish of that section, which restores the surface without redoing the whole counter.

Rust and hard water spots are different problems

A rust mark, often from a cast iron pan or a metal can left sitting on the counter, needs a specific rust remover poultice rather than baking soda, since baking soda alone will not pull iron out of the stone.

Hard water spots, common on Houston's moderately hard tap water, usually wipe away with a stone-safe cleaner and are not a true stain at all, just mineral residue sitting on top of the sealed surface.

Testing an unfamiliar cleaning method first

Before trying any home remedy on a visible stain, test it in a small, hidden spot near the back of the counter first, since some stones react differently to the same treatment depending on their exact mineral makeup.

That small test saves you from turning one stain into two if a cleaning method does not agree with your specific slab.

Preventing the next stain

Wipe up spills promptly, especially wine, coffee, and citrus, and keep the sealer current with a yearly check, since a properly sealed counter gives you real time to catch a spill before it sets in.

If you want a second opinion on a stubborn stain or your counter is overdue for a reseal, send the estimate form or call us and we will take a look.