Epoxy grout (like Starlike EVO Epoxy Grout or [Laticrete Spectralock 1](https://www.walmart.com/ip/Laticrete-Spectralock-1-Pre-Mixed-Grout-22-Midnight Black/117.85USD)) is the best choice for going over old grout. Unlike cement-based grouts, epoxy relies on superior chemical bonds, never requires sealing, and is completely waterproof.
The short answer is no; you cannot simply smear new grout over old grout. Because grout doesn’t adhere to itself, a second layer will flake, crack, and peel off. For a lasting fix, you must remove the top layer of old grout so the new grout has enough depth to bond to the tile edges and substrate.
The new grout can be applied right over the top of the existing grout. You will need a grout removal tool, which is a small tool with a sharp blade capable of chipping away the grout. To remove the top layer of grout, simply chip out the old grout to a depth of at least 2mm (about the thickness of two dimes together).
The best grout for Saltillo (terracotta) tile is a coarse sanded grout or a traditional mortar mix. Because handmade Saltillo tiles have irregular edges requiring wide joints (typically 1/2" to 1-1/4"), standard un-sanded grout will shrink and crack.
Yes, you must remove the old grout before applying new grout. New grout cannot adhere to a thin layer of old grout and will quickly flake or crumble away. You should remove the old grout down to a depth of at least 2 mm (or about the thickness of two dimes) to give the new material enough space to bond securely.
Contractors often skip sealing grout because it adds significant time to the build, which drives up labor costs. Some modern grout types already have sealers built into the mix, or are made of epoxy, completely eliminating the need for sealing. Additionally, many builders purposefully avoid sealing to prevent trapping moisture underneath the tile.
Yes, Dawn dish soap is excellent for cleaning and maintaining grout. Because it is a powerful degreaser, pH-neutral, and non-abrasive, it effectively breaks down everyday dirt and grime without damaging or discoloring the grout lines.
Professionals rely on epoxy and high-performance cementitious or acrylic premixed grouts depending on the demands of the installation. For wet or high-traffic areas, epoxy is the undisputed favorite because it is completely stain-resistant, waterproof, and doesn't require sealing. For standard or tight-budget jobs, pros turn to premium polymer-fortified cements.
If your Saltillo looks dull, chalky, or covered in efflorescence, it may need to be stripped before resealing. Stripping can be messy, so we recommend a professional unless you're an experienced DIYer. Reseal every few years to avoid stripping. Protect floors with rugs, pads, and doormats.
Common grouting mistakes—like using the wrong mix ratio, scrubbing with too much water, or timing the cleanup wrong—can weaken the installation and ruin its appearance. For a professional-looking and durable finish, avoiding these specific errors is essential.
Common regrouting mistakes usually involve poor preparation, incorrect mixing, or rushed timing. To ensure a waterproof and visually appealing finish, avoid the following errors:
Yes, applying a second coat of grout is entirely possible, but you must take proper precautions to prevent the new layer from chipping or flaking off.
To make old grout look new again, start by deep cleaning with a mixture of baking soda and 3% hydrogen peroxide. For stubborn, permanent stains, apply a colorant like a Grout Paint Pen or Grout Refresh Sealer, which permanently dyes the lines to your choice of a fresh color.
You should regrout your tile when you notice signs like mold, discolored grout, loose tiles, or cracked grout. Grout usually lasts 15 to 20 years with good care. Watching for these signs helps you know when it's time for regrouting.
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.
Yes, you can absolutely touch up grout! If you are dealing with minor chips, cracks, or shallow spots rather than a whole-room renovation, a simple, localized repair is an easy DIY fix.
Saltillo tile is generally considered a timeless, classic material rather than outdated, largely due to its warm, rustic character and resurgence in popular, eclectic, and, particularly, Mediterranean, bohemian, or modern rustic interior styles. While highly polarizing, it offers durable, earthy charm that adapts well to warm, organic design trends, although it requires high maintenance and is not suited for minimalist aesthetics.
Vinegar can absolutely damage your tile and grout over time. While ceramic and porcelain tiles are highly durable, the acidity in vinegar can erode, etch, and discolor cement-based grout. Natural stone tiles (like marble, travertine, and limestone) are highly vulnerable and can be severely etched by acidic cleaners.
Covering floor tiles without removing them is a great way to save time and money. The best method depends on your budget and space, ranging from simple peel-and-stick covers to floating floorboards.
Sanded grout (fine-sanded grout)
Sanded grout is inherently less prone to shrinkage and cracking, which is why it is the best grout for wider grout joints.
The short answer is no, you cannot just smear new grout over old grout. If you apply a thin layer (or skim coat) over the top, it will lack the thickness to bond and will flake, crack, or peel off within a few months.
Polyblend is a highly popular, budget-friendly cement-based grout that is generally good for standard tile projects. It is affordable, easy to mix, and widely accessible. However, it requires proper sealing, is susceptible to efflorescence, and some users report issues with color consistency.
Hotels maintain spotless shower glass through a combination of hydrophobic protective coatings, strict daily maintenance, and professional-grade descaling chemicals. Between the frequent daily wiping, deep descaling, and preventive water-repellent treatments, they keep mineral deposits and soap scum from bonding to the glass.
Never clean unsealed grout with pure bleach, and avoid all highly acidic products like vinegar, lemon juice, or toilet bowl cleaners. Acids corrode the porous cement surface over time, leading to cracking. Additionally, skip abrasive scrubbers and oil-based soaps, which can permanently scratch the tile or leave a sticky residue.
Yes, you can use Murphy’s Oil Soap on tile floors. It is a gentle, natural-ingredient cleaner that safely lifts dirt and grime without damaging the ceramic or porcelain tiles.