Uneven tiles, visible lippage, and inconsistent grout lines can quickly ruin the look of a tiling project. Even high-quality tiles won’t hide poor spacing or uneven levels, and once set, these mistakes are difficult and costly to fix.
The good news is they’re easy to avoid. With the right tile spacers and levelling tools, you can achieve straight grout lines, even tile heights, and a clean, professional finish.
Whether you're a DIYer or a tile professional, this guide will help you get it right first time and deliver precise, high-quality results on every project.
Images: tile cross spacer, twist cap levelling system, strips and wedge levelling set
Are Tile Spacers necessary?
In short, yes. tile spacers are absolutely necessary if you want a consistent, even tile joint spacings.
Trying to tile “by eye” may seem quicker, but even small inconsistencies become obvious once the grout is applied. Uneven spacing can result in crooked lines, mismatched joints, and a less professional finish. Tile spacers take the guesswork out of installation by creating uniform gaps between each tile, helping you achieve a cleaner look while saving time.
Key benefits of Tile Spacers:
☑️Consistent grout lines: Every joint remains the same width across the entire installation
☑️ Improved alignment: Keeps tiles perfectly straight in rows and grids
☑️ Professional finish: Ensures clean lines that enhance the final look
☑️ Reduced movement during curing: Helps tiles stay in position as adhesive sets
☑️ Saves time: Speeds up installation by removing guesswork and reducing the need for adjustments
When paired with tile levelling systems, spacers also help prevent lippage, where tiles sit at slightly different heights. This is especially important with large format tiles, where every variation shows.
For both DIYers and professionals, spacers are a fundamental part of achieving a high-quality tiling finish.
What tile spacer size should you use?
Choosing the right spacer size affects both the look and performance of your tiled surface. Explore your ideal size below depending on your tile type, finish, and desired grout line thickness.
Tile spacers positioned correctly at tile corners for even grout lines, spacers size reference
a. 2mm Tile Spacers for a minimal finish
If you’re after a sleek, modern look with narrow grout lines, 2mm spacers are a great option. They work especially well with rectified porcelain tiles, wall tiling, and contemporary spaces where you want a clean, seamless finish.
➡️ Shop 2mm tile spacers for clean, narrow grout lines
b. 3mm Tile Spacers for a balanced finish
If you want a grout line that feels balanced, 3 mm spacers are a reliable all-round choice, working well for both wall and floor tiling by delivering a practical finish that’s neither too wide nor too minimal; they’re particularly suited to ceramic and porcelain tiles, offering enough flexibility to accommodate slight variations in tile edges while still maintaining a clean, consistent look.
➡️ Explore 3mm tile spacers for a versatile, even finish
c. 5mm Tile Spacers for a defined finish
If you’re working with rustic, textured, or natural stone tiles, 5mm spacers are a practical choice. The wider grout joint helps accommodate natural size variation while giving you a more defined, traditional finish. They are ideal for stone, handmade, or less uniform tiles, particularly on floors or in high-traffic areas.
➡️ Get 5mm tile spacers for wider, classic grout joints
While choosing the right spacer ensures consistent grout lines, achieving a truly professional result also depends on how level your tiles sit. Even with perfect spacing, uneven tile heights can affect the overall finish. This is where tile levelling systems come in.
What is a Tile Levelling System, and do you need one for a perfect finish?
While tile spacers control the distance between your tiles, a tile levelling system works alongside them to control the height, keeping everything perfectly flush as the adhesive sets. This is key to preventing lippage, which often happens due to slight dips in the substrate or uneven adhesive coverage. Even minor height differences can be noticeable once the job is finished, especially across larger areas.
Tile levelling systems become essential when working with large format tiles, where any unevenness is far more visible and harder to correct by hand. By applying consistent pressure between neighbouring tiles, they help you achieve a flat, smooth surface with far less effort. Used together with spacers, they give you complete control over both grout lines and tile level, making a professional-quality finish much easier to achieve.
Which Tile Levelling System should you choose?
Choosing the right levelling system depends on your experience level, project size, and preferred working style. The two most common options are wedge systems and screw-cap twister systems.
a. Wedge Levelling for efficiency
Wedge levelling systems are a great choice if you want something straightforward and easy to manage. They use levelling strips placed under the tile and reusable wedges to apply consistent pressure, helping keep tiles aligned as the adhesive sets. Both the wedges and pliers can be reused, making this a practical option over multiple projects. With pliers, you can tighten wedges quickly and evenly with less strain, making this system especially user-friendly for beginners and efficient on larger areas.
➡️ Available in 1.5mm or 2mm levelling strips, to be used with wedges, and pliers for faster installation.
b. Screw-Cap Twister Levelling for control and precision
Screw-cap levelling systems use a twist mechanism to bring tiles into alignment, giving you a high level of control over the pressure applied between tiles. This makes them a popular choice among tile professionals who value accuracy and a consistent finish across larger areas. The caps are reusable, making them a practical long-term option for repeat use.
➡️ Available in 1.5mm kits, as well as 2mm and 3mm options to suit different grout line sizes.
Ready to get started?
Whether you’re perfecting your grout lines with spacers or ensuring a flawless surface with a levelling system, having the right tools makes all the difference. Now you know what to use and when, you can approach your next tiling project with confidence.
Shop grout and matching sealants, or explore the full range of tiling tools to get everything you need for a high-quality finish.