How to seal porcelain tile?

Author: scraper  |  Last update: Sunday, August 9, 2026

Glazed and highly polished porcelain tiles do not need to be sealed because they are already impervious to moisture. However, matte, textured, unglazed, or polished porcelain with micro-pores should be sealed to prevent staining from spills or trapped dirt. Most importantly, the cement-based grout lines connecting the tiles always require a sealer.

Do porcelain tiles need to be sealed?

The surface of porcelain and ceramic tile do not require sealing, however, it's important to note that even though your porcelain or ceramic tile does not need to be sealed, the grout used during installation will need to be sealed and maintained.

What is the best way to seal porcelain tiles?

It's best to choose a water-based sealer which is specifically designed for use on porcelain tiles, or a polyurethane topical sealer, as acrylics do not create a strong or long-lasting bond to such a dense surface. It's important to choose a non-slip sealer if you're using it on floor tiles.

What is the best grout sealer for porcelain tile?

The best grout sealer for porcelain tile is a heavy-duty penetrating impregnator. Leading options include Miracle Sealants 511 Impregnator for deep, long-lasting moisture protection, and Aqua Mix Sealer's Choice Gold for a premium, non-toxic shield safe for food prep areas and wet environments.

Can I use Dawn soap on porcelain tile?

Yes, you can absolutely use Dawn dish soap on porcelain tile. It is a mild, grease-cutting detergent that is highly effective and safe for both glazed and unglazed porcelain.

How To Seal Porcelain Tiles | SEAL-IT Tile Sealer Application Guide

What not to use on porcelain tiles?

We strongly caution against the use of acid-based or solvent-based chemicals for cleaning of fully polished impervious or polished glaze porcelain tile. The use of such products may damage the tile. -Finish cleaning by using a clean tank of water and rinse surface, removing any excess liquid.

Does vinegar damage tile or grout?

Yes, vinegar is generally bad for tile grout if used frequently or for routine cleaning. Because it is acidic, vinegar can etch, dissolve, and weaken the cement and calcium carbonate components in grout over time.

Why do contractors not seal grout?

Builders often skip sealing grout to cut costs, save time, and avoid returning to the job site. Additionally, many modern polymer-modified grouts are stain-resistant, and sealing un-cured grout can trap moisture. Some installers even use it as an upsell or exclude it because sealing can leave a hazy film on certain tiles.

Is there a sealer for porcelain tiles?

Sealing Porcelain Tiles with a Natural Look Penetrating Sealer: Good: Aqua Mix® Penetrating Sealer. Better: Aqua Mix® Pro-Solv® Best: Aqua Mix® Sealer's Choice® Gold – Rapid Cure or Aqua Mix® Ultra-Solv®

Is it better to spray or brush grout sealer?

When choosing between spray and brush grout sealers, spray is faster and better for large floor spaces, but wastes product and requires cleaning the tile surface. Brush (or roller) application takes longer but offers precision control, ensuring the sealer only goes on the grout without splattering.

How to bring shine back to porcelain tile?

To keep and improve the natural sheen of your polished porcelain tiles, tile polishing and sealer is a good idea. This helps restore the reflective finish and creates an extra layer of protection against dirt and spills. Tile Polish: Use a porcelain tile polish intended for a glossy finish.

How do I know if my tiles are ceramic or porcelain?

To quickly tell the ceramic and porcelain apart, flip the tile over. Ceramic typically has a red or brown clay body on the back, while porcelain has a denser, white or light gray clay body. Additionally, porcelain is heavier, smoother, and absorbs significantly less water than porous ceramic.

Can grout be permanently sealed?

Unlike a thin, clear sealant that wears away quickly, grout color sealing utilizes a durable epoxy-based formula. This advanced sealant penetrates the porous grout and creates a non-porous, permanent bond.

How do you seal porcelain tiles?

Glazed and highly polished porcelain tiles do not need to be sealed because they are already impervious to moisture. However, matte, textured, unglazed, or polished porcelain with micro-pores should be sealed to prevent staining from spills or trapped dirt. Most importantly, the cement-based grout lines connecting the tiles always require a sealer.

Can I use Swiffer wet cloths on porcelain tile?

Yes, you can use Swiffer Wet cloths or a Swiffer WetJet on porcelain tile. They are convenient for quickly picking up surface dirt, but keep in mind that Swiffer solutions can leave a faint, hazy residue on shiny tile and may not deep-clean grout lines.

What are the disadvantages of porcelain tile?

While incredibly durable and water-resistant, porcelain tiles have a few notable drawbacks. The primary disadvantages include high upfront costs, a cold and rigid surface that is uncomfortable for standing, and complex, expensive installation due to the material's extreme density.

What should you not use on porcelain tiles?

Things to avoid

  • Avoid polishing wax or any impregnating products as their application is unnecessary.
  • Avoid steel wool and abrasive products of any kind.
  • Avoid chemical cleaners, bleaches or detergents containing chlorine or any of its derivatives except those detailed above.

Can I use Dawn dish soap on porcelain tile?

Yes, you can absolutely use Dawn dish soap on porcelain tile. It is a mild, grease-cutting detergent that is highly effective and safe for both glazed and unglazed porcelain.

Is it worth sealing porcelain tiles?

No, you generally do not need to seal porcelain tiles. Because porcelain is fired at extremely high temperatures, it is highly dense and virtually non-porous. As a result, liquids and stains cannot easily penetrate the surface.

Can I seal my own grout?

Although it may require a little patience, sealing grout is an extremely simple process, and there's no need for any specialist tools. However, for easy application and professional results, make sure you choose the right product for the job. Here are a few tips on selecting grout sealer.

Can you put new grout over old grout on tile?

Technically, you can regrout over old grout, but it is not recommended to just smear new grout on top. Doing so will likely result in a weak bond, leading to cracking, peeling, and an uneven finish.

What is the best grout sealer?

The best grout sealers are Miracle Sealants 511 Impregnator and Aqua Mix Sealer's Choice Gold. Both are penetrating sealers that absorb deeply into porous cement grout, forming an invisible, breathable barrier against water and oil-based stains without altering the grout's natural color.

Can you use white vinegar on porcelain tile?

Yes, you can use white vinegar on porcelain tile, but only if it is heavily diluted and used occasionally. Because vinegar is acidic, frequent or highly concentrated use can eventually erode or dull the shiny finish of glazed or polished tiles and weaken cement-based grout.

How do you clean light colored grout in a bathroom that is 18 years old?

Steps:

  1. Mix cleaning solution. Combine ½ cup baking soda, ¼ cup hydrogen peroxide, and 1tsp. dish soap.
  2. Use a spoon to spread the solution along grout lines.
  3. Let it sit for 10-15 minutes.
  4. Use grout brush to scrub grout lines to dislodge stubborn dirt and debris.
  5. Wipe clean with a damp cloth and dry with a clean towel.

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