Laying tiles in strips: complete guide in 6 steps

By Osman Orman · Tile and technical specialist at Tegelmonsters

Laying tiles in strips means that the grout lines of the floor and wall run in a straight line, without any offset. The eye follows an unbroken line across both surfaces.

For a project, that is no coincidence, but a choice you determine in advance. The result depends on size, caliber, joint width, and the flatness of the substrate.

Understanding & Technique

What exactly does laying tiles in a staggered pattern mean?

Strip jointing is a finishing choice where the joints of two surfaces align. The joint on the wall is repeated in exactly the same place as the joint on the floor. As a result, the space appears to consist of a continuous grid rather than two separate surfaces. It is the same concept as a seamlessly applied pattern, only between floor and wall.

The difference compared to standard tiling lies in the alignment. With standard tiling, the floor and wall are laid out separately, causing the grout lines to intersect randomly. With flush tiling, the layout starts from a shared reference line. The tiler measures out the floor and wall together so that the grids align. That alignment is the core of the effect.

Strip work comes into its own best in sleek, modern spaces with a muted format. Think of a bathroom with large-format porcelain tiles, a reception area, or a commercial zone where the tiling needs to form an understated background. You can read how we coordinate this with various laying patterns in our explanation of tile laying patterns , where the grid forms the basis of the grout design.

Terms & conditions

What conditions make staggered laying possible?

Matching tiling stands or falls with dimensional accuracy. The caliber is the exactly measured size group of a production batch and is indicated as a number on the box. Tiles from the same caliber hardly differ from one another, so for a continuous grout pattern, use tiles from the same size group on both the floor and the wall. Additionally, the size must be the same or in a fixed ratio so that the grout lines recur at equal distances.

The joint width is the third factor. A joint of 2 mm on the wall and 3 mm on the floor breaks the sleek look, because the lines no longer coincide. For flush work, therefore, maintain the same joint width on both surfaces. Which size suits which format and zone is explained in our article on joint width for rectified tiles , which lists the values ​​for each situation.

The fourth condition is the substrate. A continuous grout line exposes every unevenness, so the flatness must be correct. NEN 2747 specifies the flatness classes for finishing floors that are common in specifications for smooth tiling. The table below lists the conditions side by side, along with the rationale and the point of attention for each item.

What project managers often tell us is that preparation carries more weight here than with standard tiling. A level substrate and a shared dimension line for floor and wall are not an extra luxury, but the foundation. Therefore, during the specification phase, our specialists review the interplay of size, caliber, and substrate before the specifications are finalized.

Sizing

How do dimensions and caliber influence the result?

Sizing begins with the difference between nominal size and working size. The nominal size is the format stated on the packaging, for example, 60×60 centimeters. The working size is what a ruler indicates, and due to shrinkage during firing, this is almost always slightly lower. For a 60×60, a working size of around 59,7 centimeters is normal. This is not a deviation, but production practice.

The European standard EN 14411, equivalent to ISO 13006, specifies how much a tile may deviate from the nominal size and how much tiles may differ from one another. The straightness of the edges and the flatness of the surface fall under ISO 10545-2, the measurement section of the tile standards. For a non-rectified tile, this margin permits a visible dimensional difference between tiles from different batches. The full standard texts can be found via NEN , the Dutch standardization institute.

Kaliber solves this within a batch. After firing, the manufacturer sorts tiles by measured size and assigns each group a caliber number. Tiles with caliber 1, for example, are 597,2 millimeters, while caliber 2 is 597,8 millimeters. For flush work, you adhere to a caliber line and order floor and wall tiles at once, so that the grout lines line up at the same height across both surfaces.

For architects working with large formats, dimensioning is doubly important. The larger the tile, the faster a small dimensional difference becomes visible along the length of a surface. Our explanation of large-format tiles in projects details how format selection and dimensional accuracy relate to large surfaces.

Correction

Why is rectification often a prerequisite for a clean joint appearance?

Rectification is a finishing process after firing. An industrial machine grinds each tile exactly square and to a predetermined size. As a result, every box has an accurate gauge, and the size difference between tiles is less than half a millimeter. This precision allows for a narrow, consistent grout joint, and it is precisely a consistent joint that keeps a straight line across the floor and wall.

Most premium tiles in this segment are made of porcelain stoneware. Porcelain stoneware is a fully ceramic, fired stoneware tile with a water absorption of less than 0,5 percent, which makes the tile hard and dimensionally stable. This stability helps with flush work: the material expands and contracts very little and retains its dimensions. With a non-rectified tile, the natural burn mark results in a wider grout joint, which softens the clean lines. For rustic designs, however, this is actually desirable. The background of the grinding process can be found in our article on rectified tiles.

Rectification is not mandatory, but it is the logical choice when the grout line plays the leading role. After sending thousands of tile samples, we have noticed that projects with a continuous grout pattern almost always opt for rectified tiles, because the narrow joint carries the effect. Whether a tile is rectified is indicated in the product data and is immediately visible at the edge of a sample.

Type

How do you align grout lines from floor to wall?

A aligning result is achieved during the layout and setting phase, not at the end. The tiler fully measures the room and determines where the grout lines align best, ensuring that cut tiles fall symmetrically in the corners. This layout line is shared: the floor and the wall start from the same line. Only then does the setting of the tiles begin.

The order of activities varies by project, but the coordination principle remains the same. The table below compares two common working methods, showing the situations in which each approach is suitable. Both result in a continuous joint appearance, provided the reference line is correct.

The joint width must be the same on both surfaces, otherwise the lines will still shift apart. The substrate must achieve the flatness required by the Building Decree framework for finishing layers; details regarding this can be found in Building Decree 2012. The joint colour determines how prominently the line is visible; an explanation per colour family provides our explanation of joint colours.

Specification

What does working in line mean for your project specification?

Matching work is a design choice that must be specified, not a given on the construction site. Because it requires extra preparation, the requirement should be explicitly included in the specifications. In practice, a specification line looks like this: tile format 60×60 cm, rectified, caliber 1, joint width 3 mm equal on floor and wall, matched from a shared reference line, substrate according to the flatness class from NEN 2747.

With those five parameters, you prevent ambiguity between the architect, main contractor, and tiler. The flatness requirement is not a minor detail in this regard. A continuous grout line makes every bump visible, so the substrate must be checked for flatness beforehand and, where necessary, finished with a leveling compound. The article on joint width states which joint size corresponds to which format, so that you can include that number in the rule with proper justification.

For the tile selection itself, dimensional accuracy is paramount. Pamesa Ceramica from Spain, known for its wide porcelain stoneware range with rectified edges, supplies collections with a uniform caliber that works well for flush tiling. For walls, designers sometimes choose a coordinated design series from Aleluia Ceramica from Portugal, a brand known for design-driven collections. Which of the two fits depends on the design and the desired size for the floor and wall.

Sample package

How do you put together a sample package for a aligning project?

On the tiles page , you can filter for free by size, finish, and zone. For a matching project, select floor and wall in the same size and look for the "rectified" designation. For each zone, you can see which collections are in stock and which we can send as samples, so you can evaluate the floor and wall side by side.

With the Sample Map tool, you bundle tiles by project and keep floor, wall, and any accent samples together. This helps with alignment, as you place the sizes and calibers of floor and wall side by side in a single overview. You share the selection with your client before the samples are delivered.

In the projects handled by us, we increasingly see that the initial selection is made online, followed by a physical assessment in our showroom in Utrecht. There, architects place floor and wall samples side by side on a test area. The showroom is accessible to professionals by appointment only, ensuring that full attention is focused on the project.

Laying in strips is part of laying out a tile floor. The entire process from start to finish is detailed in our guide on laying tiles.

Frequently asked questions