Natural stone is generally porous enough to want sealer, while engineered quartz is non porous and skips it. This page covers the water drop test, daily cleaning, what actually stains, what etches, and how ATX Granite King talks through care when you pick a slab in Austin.
Stone counters fail in two boring ways. Liquid soaks in and leaves a stain, or acid etches a calcium mineral and leaves a dull spot. Granite is a natural igneous stone that is hard and heat tolerant but porous enough to want sealing. Quartzite is metamorphosed sandstone and is very hard in most cases, though some slabs sold as quartzite are softer and behave more like marble. Marble etches from lemon and vinegar whether you sealed it or not. Knowing which failure you are looking at is the whole care job.
Engineered quartz is ground stone and resin. It is non porous, needs no sealing, and can be damaged by direct heat and by long UV exposure outdoors. Porcelain slabs generally skip sealer too. Soapstone is usually oiled, not treated like granite. Dolomite often sits closer to marble on acid. Semi precious lots depend on the mineral in front of you. We handle all of those on a direct importer slab floor in Austin with 299 lots. You pick the actual slab. This crew templates, fabricates, and installs it. One crew start to finish.
ATX Granite King works Austin and the I-35 corridor, including Pflugerville, Round Rock, Cedar Park, Leander, Georgetown, Hutto, Jarrell, Salado, Belton, Temple, Killeen, and Harker Heights. Sink cutout and sink set are included in the fabrication work. We also work with a slab selection and fabrication partner for rental grade and flip grade stone, so a rental does not have to pay for a showpiece slab. Care is still the same physics. For a number on a job, call (512) 297-7493 or email info@atxgraniteking.com and ask for a straight quote. Reachable seven days a week.
Put drops of water on a clean dry spot and wait a few minutes. If the stone darkens, it is generally absorbing and usually wants sealer. If water beads and color holds, sealer is often still working. Test more than one area. Honed faces can read differently than polish. Quartz and most porcelain skip this test.
Use a soft cloth, warm water, and mild dish soap in most cases. Rinse soap off. Dry so water does not sit in seams. Skip abrasive powders, scouring pads, and strong acids on natural stone. Granite generally takes heat better than quartz. A hot pan can damage quartz. Wipe spills sooner on marble and dolomite. Etching is not a stain you wipe away.
A stain is color that soaked into pores. Oil, wine, coffee, and rust are common on granite that has gone thirsty for sealer. An etch is a dull or rough mark from acid reacting with calcium stone. Lemon, vinegar, tomato, and some cleaners etch marble and many dolomites even when sealer is present. Sealer does not stop etching. Quartz generally resists both, then fails from heat or outdoor UV instead.
Impregnating sealer soaks into the pores of natural stone. It is not a plastic coat sitting on top like varnish on wood. The point is to slow water, oil, wine, and coffee so they have less time to occupy the stone. Granite is a natural igneous stone. It is generally hard and heat tolerant. It is also porous enough in most cases that it wants sealer. Darker granite can still show oil if the sealer is thin or old. Lighter granite often shows water first. Sealer does not make granite stain proof. It buys you time to wipe. That is the honest limit.
Quartzite is metamorphosed sandstone. In most cases it is very hard. Some slabs sold as quartzite are softer and behave more like marble, including etching from lemon and vinegar. A hard quartzite still usually wants sealer because it can be porous. Marble is calcium based. Acids etch it whether you sealed it or not. Dolomite sits in that same calcium family in many lots. Soapstone is usually treated with oil rather than a typical impregnating sealer. Porcelain slabs are generally non porous and skip sealer. Engineered quartz is non porous, needs no sealing, and can be damaged by direct heat and by long UV outdoors.
Semi precious slabs vary by mineral. Some are harder. Some scratch and stain more easily. We do not write one care sheet for every lot on the floor. You pick the actual slab off a real Austin slab floor with 299 lots, then this crew templates, fabricates, and installs it. Sink cutout and sink set are included in the fabrication work. After the stone is in, care is on you, with honest notes from us about that material. Rental grade and flip grade stone from our selection partner still follows the same physics. Plainer stone can still etch or stain if the mineral is calcium or thirsty.
Clean the counter first so old soap film is not lying to you. Dry it. Put a teaspoon of water in a few spots, including near the sink, near a cooktop, and on a low traffic end. Wait. Several minutes is enough to read most granite. If the spot darkens, the stone is absorbing. That is your cue to reseal in most cases. If beads sit on top and the color does not change, sealer is usually still present. Honed and leathered finishes can darken a little even when sealed because the texture holds water on the surface. Wipe those spots dry and look again. Quartz and porcelain should not darken from a water drop.
If the stone wants sealer, work on a cool, dry counter. Follow the bottle for that product. In most cases you spread a thin wet coat, let it dwell, then wipe every bit of extra off the face before it dries on top. Residue on the polish looks hazy and is a pain to rub out. Edges and cutouts drink more. Do the sink rail and the backsplash ledge if they are the same stone. Do not flood seams. Sealer is not glue and it is not a filler for a wide joint. Sealer will not fill a dull lemon mark on marble. That mark is the mineral changed.
Daily cleaning is a cloth, warm water, and a drop of mild dish soap in most cases. Rinse. Dry. That is the whole method for granite, quartzite, quartz, and porcelain. Do not store a wet sponge on the stone. Do not use toilet bowl cleaner, oven cleaner, or vinegar mixes on marble, dolomite, or soft quartzite. Those acids etch. Granite generally tolerates a bit more, and still does not need harsh stuff. For heat, granite usually handles a hot pan better than quartz. Quartz can scorch or discolor from direct heat. Use a trivet anyway. Outdoor kitchens are a bad place for most engineered quartz because of long UV exposure.
The bad news is simple. Sealer does not stop etching on marble. Lemon, vinegar, wine acid, tomato, and some soaps will dull calcium stone even on a freshly sealed top. People buy marble for the look and then hate the first etch. That is not a failed sealer. That is the mineral. Some quartzite sold in the market is mislabeled and will etch the same way. If you cook with citrus and you want a face that stays even, marble is usually the wrong pick. We will say that on the slab floor. We would rather lose that slab sale than install a stone you will fight every week.
Granite that looks sealed can still take an oil stain if a bottle sits overnight. Dark greens and blacks show cooking oil. Light whites show turmeric, wine, and rust from cans. Poultice work can pull some stains and can fail on others. That is a real limit. Engineered quartz skips sealing and then fails in other ways. Direct heat can leave a dull ring. Long UV outdoors can yellow or chalk the resin. A covered patio in full sun is still a UV risk. Porcelain generally skips sealer. It can still chip on a sharp impact.
Soapstone is a different tradeoff. Many owners oil it and like the darkening. If you do not oil it, it still works as a counter in most cases, it just looks drier. Honed marble shows every etch as a shine change. Polished marble shows etches as dull spots. Neither finish is maintenance free. Sealing often enough is work. Forgetting it is how granite picks up oil around the stove. Our partner path for rental grade and flip grade stone exists so a rental does not have to pay for a showpiece slab. Care rules do not get easier on a plainer lot.
Start with how you cook and clean, not with a photo. If lemon, vinegar, and wine hit the counter every day, skip marble and be careful with dolomite and with any quartzite that behaves like marble. Ask to test a drop of lemon on a spare corner of that lot if the yard will allow it. Granite is generally the more forgiving natural pick for heat and for acid, and it still wants sealer and still can stain. Engineered quartz skips sealer and asks you to keep hot pans off it. Porcelain slabs generally skip sealer too. None of these is magic. Pick the failure you can live with.
Finish changes care. A polish shows fingerprints on dark stone and shows etches as dull moons on marble. A honed face hides some swirl and shows water more. Leathered granite can hide a lot of daily life and can still oil stain in the pits. Color matters. White and pale gray show everything that soaks in. Black can hide water and then show a dull oil patch. Busy movement hides stains better than a clear field. Semi precious lots can be showy and fussy. If you want low fuss, stay in granite, quartz, or porcelain in most cases, and still wipe your spills.
A rental unit and a house you cook in every night are different jobs. Rental grade stone from our fabrication partner exists so you are not forced into a showpiece slab. Flip grade is the same idea. You still pick from real lots, then this crew templates, fabricates, and installs. One crew start to finish. Decide with the actual slab on the Austin floor, not from a phone picture. Sink cutout and sink set are included in the fabrication work. If you cannot live with sealer, lean quartz or porcelain. If you hate resin, lean natural stone and accept pores.
Call ATX Granite King at (512) 297-7493 or email info@atxgraniteking.com. We are reachable seven days a week. You pick the actual slab off a real Austin slab floor with 299 lots. Stone comes from a direct importer slab floor in Austin. Materials we handle are granite, quartzite, engineered quartz, marble, dolomite, soapstone, porcelain slabs, and semi precious. We serve Austin, Pflugerville, Round Rock, Cedar Park, Leander, Georgetown, Hutto, Jarrell, Salado, Belton, Temple, Killeen, Harker Heights, and the I-35 corridor. Care talk happens on that same call. If you need a number on the job, call for a straight quote.
The sequence is slab first, then template, then fabricate, then install. One crew start to finish. We do not hand your job to a rotating set of strangers. Bring photos of the kitchen, a sink model if you have one, and honest notes about how you cook. We will talk sealing and etching before you fall in love with a marble that will mark. Dates come in writing with the quote. We never promise same day or next day work. Do not ask us to invent a calendar on the phone. That written date is the one that matters.
After install, write down the stone name from the slab tag. Do the water drop test after the dust is gone and the counter is in real use. Reseal granite and most quartzite when the stone starts to darken under water. Do not reseal quartz. Do not treat an etch on marble like a stain. If a joint or a chip shows up, call the same number. For a kitchen, a vanity, or a rental row, the path is the same. Pick the slab. We template, fabricate, and install. Sink cutout and sink set stay in the fabrication work. Call for a straight quote.
$38 per square foot, cut, measure, and install included. Jobs over 1,000 square feet: $30 per square foot.
Sink cutout and sink set are included in the fabrication work. Non standard work is still quoted before work begins. Send the rough square footage and the rooms involved, or call (512) 297-7493 for a straight quote.
Usually yes. Granite is a natural igneous stone that is hard and heat tolerant but porous enough to want sealing in most cases. Do a water drop test on a clean dry spot. If it darkens, seal it. Sealer slows stains. It does not make the stone stain proof. Oil left overnight can still mark a dark slab. Quartz generally needs no sealer. If you are choosing a new slab, call for a straight quote and we will talk that lot on the floor.
Not on marble, dolomite, or a soft quartzite that behaves like marble. Vinegar is acid. Calcium stone etches. The dull spot is the mineral reacting, not dirt. Sealer does not stop that. Granite generally handles a splash better and still does not need vinegar. Warm water and mild dish soap are enough in most cases. Rinse and dry. If a product says it is for natural stone, read whether it is acidic. When you pick a new counter, call for a straight quote and say how you like to clean.
That is etching, not a stain. Marble is calcium based and etches from acids like lemon and vinegar regardless of sealing. The polish is gone in that spot because the stone itself reacted. Wiping faster helps a little and does not make marble acid proof. Honed marble shows it as a shine change. Polished marble shows a dull mark. Some slabs sold as quartzite will do the same if they are softer. The honest downside is you will see this if you cook with citrus. Pick a different mineral if that bothers you.
Use the water drop test, not a calendar. Clean and dry the counter. Drop water in a few places. If the stone darkens, it is generally absorbing and usually wants sealer. If water beads and color holds, wait. Honed surfaces can fool you because texture holds water. Quartz and most porcelain never need this. We do not give a day count because kitchens vary. Oil, sink use, and the lot change the pace. For a new install, call for a straight quote. Job dates come in writing with that quote.
Engineered quartz is ground stone and resin. It is non porous in most cases and needs no sealing. Daily care is still a soft cloth, water, and mild soap. Direct heat can damage it. Long UV outdoors can damage it. Do not treat it like granite that wants sealer. A hot pan set down dry is the usual way quartz gets a dull ring. If you want quartz in Austin or up the corridor, call for a straight quote. We will walk the slab floor with you.
Tell us the rooms, the rough square footage and what you have in mind for sealing and care for stone counters. You get a number for the whole job, in writing, before anyone cuts anything.