(think of how consistent porcelain subway tiles look.) with factory-made cement, porcelain and ceramic tiles, 1/16-inch grout lines can create an uninterrupted appearance. however, in high-traffic areas or spaces prone to moisture, consider opting for 1/8-inch lines for added durability and easier maintenance.
Choosing between 1/8-inch and 1/16-inch grout lines for subway tiles really comes down to what you prefer, where you're installing them, and the look you want to achieve. If you go with 1/8-inch lines, you'll find they're more forgiving during installation and can hide minor imperfections.
A 1/16 inch grout line is the narrowest width commonly used for subway tiles and creates a clean, minimalist aesthetic. This narrow spacing minimizes the visual impact of the grout, allowing the subway tiles to become the focal point.
Smallest size grout lines should not be less than 1/16″. This is an acceptable space that can be properly grouted. When the space between tiles is so little like 1/32″ which is often referred to as “credit card lines” or “penny lines”, it's not possible to fill that space all the way through the bottom of the tile.
If you have a busy household with children or pets, a stain-resistant grout like epoxy is an excellent option. For homeowners who prefer low-maintenance surfaces, premixed acrylic grout might be suitable. Consider also how often you plan to clean your subway tile backsplash.
Because sanded grout is stronger, denser, and generally more durable than unsanded grout, it's the preferred grout for tile floors. First, tile floors typically have wider joints, which require sanded grout.
For standard patterns like offset or straight set, we recommend a 3/16” grout joint size. If you'd like a tighter install,1/8" is the absolute minimum size we suggest. However, if you want to install a more intricate pattern like parquet or herringbone, you may have to use a larger grout line.
for mosaic or small format tiles, 1/16-inch grout lines are often ideal. this narrow width doesn't overwhelm the tile design.
If the grout is too thin, it may not harden properly. This causes cracks and holes to form.
For smaller tiles (up to 6 inches), a 1/4 inch notched trowel is typically adequate. Medium-sized tiles (between 6 and 8 inches) require a slightly larger notch, such as a 3/8 inch notched trowel.
Use 1/3 spacing
How you lay your metro tiles can make all the difference. At first glance, this splashback looks like a standard brick bond (subway) layout, but look closely and you'll see the tiles are offset at 1/3 to give a really soft and staggered effect.
It depends on the brand of tile and the look you want to achieve. Subway tile made by Dal-Tile or American Olean, for example, has a small built-in spacer that allows you to stack the tile without additional spacers. Other tile manufacturers like Pratt and Larson or Heritage Tile do not have the built-in spacer.
A tile backsplash is a great way to breathe new life into your kitchen. But in order for your new backsplash to remain looking beautiful, it must be grouted properly.
Smaller spacers like 1/16, 1/8 can be used for large format porcelain, subway or ceramic wall tiles. These tiles are uniform in size and look better with a tight grout line.
The size of your tile should be considered when choosing a grout size. In general, there is more size variation in larger-sized handmade tiles so they need a bigger grout joint for that to be less noticeable and to achieve a more even installation.
With a pleasant 1:2 ratio, 3×6” tiles are the most popular subway tile size. They are great for kitchen backsplashes but may look a bit busy in bathrooms. Great for showers, the 4×12” tiles offer a leaner and longer 1:3 ratio that guarantees fewer grout lines and a modern look.
TCNA recommends a minimum 1/8" grout joint for rectified tile and minimum 3/16" grout joint for calibrated tile. They also suggest adding to this width the amount of edge warping on the longest edge. For example, if the edge warping of a rectified tile is 1/32", the minimum grout joint is 1/8" + 1/32" = 5/32".
Tiles with a square edge need to have the grout finished flush with the tiled surface. Tiles with a cushion or radius edge should have the grout finished to the bottom of the cushion or radius.
Unsanded grout is a cement grout with less than 1/8” grit. Generally, unsanded grout is used for tile applications with narrower grout joints, from 1/16” to 1/8”. The additional structure of sanded grout is needed for wider grout joints from 1/8” to 5/8” and some even can go as wide as 1”.
For cementitious grout, joints smaller than 1/8″ generally should only be grouted with unsanded grout, and joints of 1/8″ and larger should only be grouted with sanded grout.
Thin and Light (1/4" to 3/8" or 6.3 mm to 9.5 mm) Thin subway tiles reign supreme when it comes to backsplashes. Their ease of installation allows for quick and efficient transformation of your kitchen or bathroom walls.
First, the smallest grout lines, less than 1/8 inch, are ideal for rectified tiles. Rectified tiles are perfectly uniform, with precisely defined edges, requiring the least amount of grout. All other cuts of tile, from tumbled to chiseled to punched, contain slight variations in shape and size.
Depends on the surface of the back of the tile. If it's smooth, then all you'll need is a 3/16th V-notch. If it has deep groves or patterns, then you might want to use a 1/4".