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Penny tile should be sealed to protect the grout from moisture and keep stains from damaging the look of the tile. If penny tile is in a humid or high-traffic area, like a bathroom, kitchen, or entryway, it needs sealant. Any type of tile and grout is best maintained with a sealant reapplied by a pro every one to two years.

Glazed ceramic tiles don’t need to be sealed because the glazing already offers some protection against moisture. Unglazed ceramic tiles need to be sealed to keep the porous tile safe from moisture and staining. However, both types of tile can benefit from sealing. Sealant can make the tiles easier to keep clean and offer more resistance to water, spills, and stains.

Once cracks appear, it is hard to stop tiles from cracking more. If the cause of the problem is improper subflooring, underlying concrete, improper tile joint sizes, mold growth, or structural issues, the only way to stop floor tiles from cracking is to redo the entire floor, fixing the underlying issues first. If cracks occur after impact damage, hiring a professional tile contractor to replace the cracked tiles, fix loose floor tiles, and restore the grout around them can prevent further damage. It is also important to keep your tile and grout clean and maintained to prolong its life.

Yes, you can install a backsplash directly onto drywall, provided the wall is properly prepped, clean, and dry. For best results, especially in kitchen areas, your walls should be made of moisture-resistant drywall, often called green board. If your current wall isn't moisture-resistant, it's recommended to replace it before installing the backsplash. For even greater protection against water damage, you can remove the existing drywall and install a tile backer board or cement board instead. While properly installed standard drywall is typically strong enough to support a backsplash, some local building codes may require water-resistant materials in kitchen areas, so it's a good idea to check.