1/16 vs 1/8 grout lines: choosing the joint for handmade tile

the joint, distilled

• 1/16 vs 1/8 grout lines: when comparing a 1/8 inch vs 1/16 inch grout line, remember that 1/16 inch keeps the focus on the tile, while 1/8 inch gives the grout grid more definition.
• narrow vs wide grout lines: narrower joints make differences in tile size and edge shape more noticeable; wider joints can soften the overall grid without hiding handmade variation.
• the right joint starts with the material. clé zellige and hand-pressed cement generally call for 1/16-inch joints, while clé lapidary stone generally calls for 1/8 inch. always check the specific product's installation guidance.
• grout size for zellige tile: we recommend a 1/16-inch joint, allowing the glaze, color shifts, and hand-chiseled edges to remain part of the design.
• thin vs thick grout joint: width and grout color work together. a close color match creates a quieter surface; contrasting grout makes the pattern and individual tile shapes stand out.
• tile size and layout matter. mosaics, large-format tile, and offset patterns have different spacing requirements, so don't choose a joint by appearance alone.
• grout width doesn't solve installation problems. substrate preparation, appropriate movement joints, compatible grout, and choosing a tile installer with experience all contribute to a successful result.
• handmade variation is part of the appeal. dry-lay the tile and review a mock-up with your proposed grout before committing to the full installation.

the narrow joint: when the tile should lead

where 1/16 shines

a 1/16-inch grout joint creates a close, continuous look that lets the tile take center stage. with precise, consistent tile, less grout between each piece means less visual interruption, making this width a natural fit for clean-lined installations and contemporary interiors. it can also help a small room feel more expansive by keeping the overall surface visually connected.

narrow joints work especially well with uniform tile, including clé subway tile, and carefully sized cement and terrazzo tile. they can also complement intricate layouts such as herringbone and basketweave, where a fine joint keeps the pattern legible without adding too much visual weight. mosaics may use narrow joints, too, though the appropriate spacing depends on the tile and its mounting system.

there’s a practical upside: less exposed grout generally means less grout surface to clean during routine maintenance. the counterpoint? when a narrow joint does need a deep clean, the small gap can be harder to reach. and while 1/16 inch can create a beautifully restrained finish, it isn't a universal starting point for every tile. handmade edges and natural size variation may call for more room.

what the narrow joint asks in return

a 1/16-inch joint leaves little margin for variation. when tiles differ in size or have irregular edges, the installer has less room to balance those differences across the surface. the result can be a grid that looks uneven in ways a wider joint might soften. a flat, properly prepared substrate and careful layout are essential, particularly when the finished surface needs to read as a precise, continuous plane.

joint width also affects how grout can be installed. the grout must be suitable for the specified joint and capable of filling it properly; a gap that's too narrow for the selected grout can make complete placement difficult. unsanded grout is often used for narrow joints, but the correct grout depends on the product, tile surface, joint specification, and manufacturer guidance. don't choose grout by width alone.

it's also worth separating grout-joint width from movement accommodation. a narrow grout joint is not designed to absorb structural movement, and a wider joint is not a substitute for the required movement joints. cracking or loose tile can result from problems such as substrate movement, inadequate preparation, or an installation that doesn't follow the system's requirements—not simply from choosing a 1/16-inch joint.

this is where an experienced installer matters. handmade tile requires an understanding of how its edges and dimensions behave in the real world, not just how the sample looks on a board. before settling on 1/16 inch, confirm the recommended joint width with the tile and grout manufacturers and make sure your installer can achieve the intended finish with the material you've chosen.

the wider joint: when the grid becomes part of the design

where 1/8 earns its place

a 1/8-inch grout joint gives the space between tiles a more visible role in the finished design. instead of letting the tile read as one continuous surface, it establishes a distinct grid that can emphasize the shape, scale, and arrangement of each piece. pair it with contrasting grout to make the pattern stand out, or choose a closer color match for a more understated effect.

the extra width can also help accommodate modest variations in tile size and edge shape, making it a useful option for materials that aren't perfectly uniform. it can reinforce the relaxed character of rustic and traditional interiors, define the geometry of larger-format tiles, or give small-format tile a more pronounced rhythm. outdoors, wider joints may suit certain patio and pool-deck installations, provided the tile, grout, and overall installation system are specified for those conditions.

in wet areas, a wider joint may contribute some additional texture underfoot, but grout width alone doesn't determine slip resistance. the tile's surface, its suitability for the application, and its slip-performance rating matter more. always evaluate the tile itself for the intended setting rather than treating a wider joint as a safety feature.

what the wider joint asks in return

a more visible grid means more grout to maintain. dirt and discoloration can stand out, especially with lighter grout in busy areas or around showers. choosing a grout suited to the installation, following the manufacturer's sealing recommendations where applicable, and cleaning regularly will help keep the joints looking their best. sealing is not required for every grout type, so confirm what your chosen product needs rather than assuming all grout should be sealed.

the visual effect deserves consideration, too. because a 1/8-inch joint draws more attention to the spaces between tiles, it can make a small room feel busier or more segmented. that may be exactly the look you want, particularly when the grid is part of the design, but it's worth viewing a sample installation before committing across a large surface.

grout selection matters at this width as well. sanded grout is commonly used for wider joints, while unsanded grout is often used for narrower ones, but the appropriate type depends on the grout manufacturer's specified joint-width range, the tile surface, and the installation conditions. some products are formulated for a range of joint sizes, so don't rely on a simple width-only rule. ask your installer to confirm the grout type and joint width against both the tile and grout manufacturers' guidance.

a wider joint isn't automatically stronger or less likely to crack. performance depends on proper preparation, compatible materials, correct installation, and appropriate movement joints. the aim is to choose a width that works with the tile's natural variation and gives the finished surface the character you want—not to use extra grout as a fix for installation problems.

the tile decides: joint by material for clé's handcrafted collections

grout size for zellige tile: a joint that lets the glaze lead

for clé zellige tile, the recommended grout joint is 1/16 inch. the narrow gap keeps attention on the glaze, color variation, and hand-chiseled edges that give each tile its character. a wider joint can interrupt that surface and make the grout as prominent as the tile itself.

traditionally, zellige is installed in morocco with butt joints and no grout. we also demonstrate ungrouted installations in our guide to five different ways to install zellige, including a textured wall of 4-by-4-inch tiles. for installations in the u.s., however, we recommend a 1/16-inch joint, with the final approach guided by the specific material guidelines and an installer experienced with zellige.

choosing grout color matters just as much as width. we generally advise matching the grout to the tile, helping the glaze and surface variation take the lead rather than highlighting every chip, pit, or hairline crack. its guidance calls for unsanded cementitious grout, but the installer should confirm the exact product and installation requirements before work begins.

hand-pressed cement: a tight, even joint

for clé hand-pressed cement tile, the recommendation is a 1/16-inch grout joint with unsanded cementitious grout. consistent spacers help maintain an even rhythm across the installation, while the close joint allows the pattern to flow from one tile to the next without letting grout lines compete with the design.

cement tile is handmade, so variation in color and texture is part of its appeal. its edges, however, are suited to a tighter, more consistent layout than highly irregular terracotta. grout color can either recede into the overall surface or help draw attention to a chosen color within a pattern, but we lean toward non-pigmented grout to help prevent staining. your installer should confirm the appropriate grout for the specific collection and follow clé cement tile installation guidance.

terracotta and brick: joints with room to breathe

some handmade materials need considerably more room than either a 1/16- or 1/8-inch joint provides. we tend toward a 1/2-inch grout joint for our Belgian Reproduction and antique terracotta collections, where substantial variations in tile size and shape are part of the material's character. here, grout isn't merely a line between tiles; it helps reconcile their differences and create a cohesive surface.

the wider joint suits the old-world character of these materials. instead of forcing irregular pieces into a precise grid, the grout gives each tile room to sit naturally within the overall layout. some Belgian Reproduction bundles and antique terracotta pieces may vary enough that the installer needs to adjust joint widths in places to keep the installation visually balanced.

this also affects ordering: a wider joint changes how much area each tile covers, so don't calculate quantities using the tile dimensions alone. have your installer work out the layout and required quantity before ordering. explore our terracotta tile collection and confirm the recommended joint for the specific product. brick formats can have different recommendations, too, so follow the product's own guidance rather than applying the terracotta specification to every brick.

stone: the steady 1/8

for clé lapidary stone tile, the general recommendation is a 1/8-inch grout joint with cementitious sanded grout. the added space accommodates the character of the stone and gives each piece a clear outline, creating a deliberate rhythm across the surface.

mesh-mounted mosaics are a special case because the sheet determines the spacing. clé's lapidary rough cut mosaic is available in both a standard-joint version, with a fixed 1/16-inch joint, and a large-joint version, with gaps ranging from 3/8 to 5/8 inch. the difference is immediately visible: the standard joint creates a closer, more continuous mosaic, while the large joint makes the individual stone pieces and the grid between them part of the design. grout recommendations also differ between these versions, so check the exact product guidance before specifying the material.

glazed ceramic and subway: where both joints belong

for subway tile, either 1/16 or 1/8 inch can work, but the tile's edges and the look you want should guide the decision. precise, consistent edges can support a 1/16-inch joint for a clean, contemporary finish, while a 1/8-inch joint gives the grid more presence and a more traditional feel. handmade ceramic subway with more pronounced edge or size variation may need a wider joint to achieve a balanced installation.

our subway tile collection includes ceramic options for which we recommend a 1/16-inch joint and unsanded cementitious grout. that collection-specific guidance should take precedence over a general rule about subway tile. if you're considering a handmade ceramic with irregular edges, ask your installer to review the actual tile and confirm the joint width with the product's installation recommendations.

grout color can shift the result as much as the width. a close match lets the tile's glaze and shape lead; contrasting grout makes the grid more graphic. with clé ceramic subway, contrasting grout requires additional precautions, including a penetrating sealant or grout release before grouting, to reduce the risk of grout settling into inherent hairline cracks. confirm the required preparation with the product's installation guide and your installer before choosing a contrasting color.

does the joint hide handmade variation?

the grout joint changes how handmade variation reads, but it doesn’t make that variation disappear. a tighter joint puts more focus on differences in tile size, edge shape, and surface texture; a wider joint can soften those differences and help the overall layout read as more uniform. neither creates a perfectly even grid when the tile itself is irregular.

with handmade tile, that variation is part of the appeal. the subtle shifts in glaze, the softened edges, and the small differences from one piece to the next are what give the surface its depth and individuality. for clé zellige, a 1/16-inch joint is a deliberate choice: it keeps the grout quiet while letting the tile’s character remain visible. the right joint works with those qualities rather than trying to conceal them.

before installation, ask your installer to dry-lay a selection of tiles, blend pieces from multiple boxes, and prepare a mock-up board with the proposed grout. seeing the tile and joint together helps you judge how variation carries across a larger area—and set realistic expectations before the full installation begins.

scale and pattern: how the layout sets the rhythm of the joint

tile size and pattern help determine which grout joint will look balanced and work for the material. small-format tile and mosaics often suit 1/16-inch joints, while medium formats offer more flexibility. larger tiles may need wider joints, depending on their dimensions and manufacturer recommendations.

rectified tiles have mechanically finished edges that allow for more consistent sizing; non-rectified tiles tend to have greater edge and size variation, which may require wider spacing. for large-format tiles with an offset pattern, ANSI guidance generally calls for a minimum average joint of 1/8 inch for rectified tile and 3/16 inch for calibrated, non-rectified tile when the offset side exceeds 15 inches. these layouts can also make lippage more noticeable, so follow the tile manufacturer's guidance and consult an experienced installer.

pattern shapes the visual rhythm, too. narrow grout lines can keep herringbone and basketweave layouts feeling connected, while wider joints emphasize their geometry. textured or irregular tile may also need extra room for a clean installation. use these principles as a starting point, then confirm the recommended joint for your specific tile with the manufacturer and installer. our tile spacing guide offers additional insights.

grout color and width: the pairing that sets the mood

grout width and color work together to shape how a tile installation reads. a 1/16-inch joint keeps the focus on the tile itself, while a 1/8-inch joint gives the grid more definition. choose a grout color close to the tile for a quieter, more continuous surface, or introduce contrast to emphasize individual shapes and create a bolder graphic effect.

our grout-color guidance varies by material. with zellige, subtle, closely matched grout lets the glaze and natural variation take center stage. with patterned cement tile, echoing one of the pattern's colors can help the design feel cohesive without competing with its details. and with delft tile, we advise avoiding contrasting grout that could distract from the artwork. explore more in the power of grout.

before committing, view grout samples alongside your actual tile and assess them in the room's own light. daylight, warm bulbs, and cooler lighting can all shift how a grout color appears. a small mock-up lets you see how width, color, and tile variation work together before the full installation begins.

room by room: where each joint lives

the right grout joint depends on the tile, the installation system, and the demands of the space—not just the room's name. use these room-by-room considerations as a starting point, then confirm the recommended spacing for your specific tile.

dry rooms and living spaces: on walls and floors in relatively dry areas, a 1/16-inch joint can create a close, continuous look when the tile allows it. it's a natural choice when you want the tile's surface, color, or pattern to take the lead.

kitchen backsplashes and shower walls: vertical surfaces often suit narrower joints, particularly with consistent tile such as subway formats. in showers, though, joint width must follow the tile and grout specifications and work within the complete waterproofing system. grout alone is not the waterproof barrier.

shower floors: don't choose joint width based on appearance alone. the tile format, slope, drainage design, grout requirements, and waterproofing system all matter. smaller tiles are often used to follow the slope to the drain, but slip resistance depends on the tile and its surface—not simply on having wider grout lines. your installer should specify the full system for the shower floor.

patios and pool decks: a 1/8-inch joint may be appropriate for some outdoor tile installations, but it isn't a universal rule or a substitute for movement joints. temperature changes, substrate conditions, tile suitability, and the specified grout all affect performance. confirm that the tile and installation system are rated for the outdoor conditions.

maintenance matters in every room. wider joints expose more grout, which can mean more surface to clean; suitable grout, proper sealing where required, and routine care help manage staining and buildup. neither wider nor narrower joints automatically prevent mold or improve drainage.

a small measurement with a long shadow

the right grout joint starts with the nature of the tile: its edges, variation, and surface character. from there, consider the room, the layout, and the role you want grout to play—quietly connecting the pieces or giving the pattern more definition. handmade tile isn’t meant to look machine-perfect; its subtle irregularities are part of what makes it worth choosing. work with an experienced installer to settle on a joint that respects those qualities and suits the installation. as you shop for tile, factor grout width into your plans before you order.