You generally only need to seal the grout, as glazed porcelain tile is non-porous and comes with a baked-on protective finish. However, unglazed, polished, or textured porcelain may require sealing to prevent stains.
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.
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.
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.
Generally, nothing happens if you don't seal porcelain tiles. Because porcelain is highly dense and non-porous, it does not absorb liquids or stains. However, leaving certain unglazed, polished, or textured porcelain tiles unsealed can make them vulnerable to microscopic staining and dirt accumulation.
Things to avoid
The majority of porcelain and ceramic tiles on the market are glazed and don't require sealing, and glass tile doesn't need to be sealed unless it has an uneven or beveled surface.
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.
Sealing grout creates a protective, stain-resistant barrier, but it comes with several disadvantages. It requires frequent reapplication, traps moisture if applied incorrectly, is not foolproof against staining, and adds upfront costs.
How to cut porcelain tiles without chipping
For standard cement-based grout, you should wait at least 48 to 72 hours before applying a sealer. This allows the grout to cure completely so that trapped moisture can evaporate.
Professional grout sealing costs between $𝟏.𝟓𝟎 and $𝟒.𝟎𝟎 per square foot for labor and materials, or roughly $𝟏𝟐𝟓 to $𝟑𝟎𝟎 for a standard bathroom or kitchen area. If you DIY, you can seal the grout yourself for as little as $𝟎.𝟐𝟎 to $𝟎.𝟓𝟎 per square foot in supplies.
Epoxy and advanced urethane/acrylic grouts do not require sealing. Unlike porous cement-based grouts, these synthetic options are completely waterproof, highly stain-resistant, and chemically dense, making them ideal for high-moisture areas like showers, backsplashes, and high-traffic floors.
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.
For most porcelain tiles, you do not need to seal the tile before grouting because porcelain is highly dense and non-porous. However, it is highly recommended to seal your grout joints after installation to prevent staining and moisture absorption.
Porcelain floor tiles are highly durable and water-resistant, but they have notable drawbacks. The primary disadvantages include high material and professional installation costs, a cold and rigid surface underfoot, a slippery finish when wet, and a challenging installation process that makes them largely unsuitable for DIYers.
If you don't seal standard cement-based grout, it acts like a sponge. The porous material absorbs water, soap scum, and everyday spills, which leads to permanent discoloration, foul odors, and accelerated degradation. Over time, trapped moisture can spawn mold and mildew beneath the surface, potentially loosening the tiles.
One of the most frequent grouting mistakes is improper mixing and application. Grout is a precise material, and getting this step right is crucial for its strength and adhesion. Incorrect Water-to-Grout Ratio: Adding too much or too little water can significantly weaken the grout.
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.
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.
Hotels keep glass shower doors spotless by combining strong commercial cleaning agents with routine maintenance and smart preventative coatings. Because they deal with heavy daily guest turnover, housekeeping staff rely on quick but highly effective strategies to prevent soap scum and hard water buildup.
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.
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.
Over time, sealers will wear away due to foot traffic and cleaning products. This means they'll need to be reapplied, to help ensure the longevity of your tiles. There isn't a straightforward answer to how often you should reseal - while some will tell you every year, others will say every five years or so.
To tell if your tile or grout is sealed, perform the simple water drop test: