Domakihub How to Fit Tile Trim for a Clean, Professional Finish
The right trim turns a raw tile edge into a finished detail that lasts for years.
Reviewed by Domakihub home & decor pros · 2026-06-23 · 5 min read
Tile trim — the thin metal or plastic strip that caps an exposed tile edge — is one of those small details that separates a bathroom or kitchen that looks polished from one that looks half-finished. The video above walks through the fitting process visually; this article breaks it into clear steps with the material choices and trade tips that matter most for homes, holiday rentals, and hotel bathrooms in Greece. Whether you are refreshing a splash-back in a villa kitchen or tiling a shower in an Airbnb, getting the trim right protects the tile edge from chipping and moisture ingress for the life of the installation.
Choosing the Right Tile Trim Profile
Tile trim comes in three main materials: polished or brushed stainless steel (best for wet areas because it does not corrode), anodised aluminium (lightweight and available in many finishes, good for interior dry walls), and PVC (cheapest but not recommended for shower enclosures or high-humidity rooms). The most common profile is the L-shaped edge trim, sometimes called a Jolly or Schluter strip, which sits at the perimeter of the tiled field and hides the raw cut edge. For external corners where two tiled walls meet, a round-nose or bullnose profile creates a smooth, rounded finish without a sharp metal corner that could catch on towels or skin.
Match the trim height to your tile thickness. A 10 mm tile needs a 10 mm trim leg; if the trim is too shallow the tile edge will protrude and the strip will rock; too deep and a visible gap appears between the trim lip and the tile face. Most Greek tile suppliers stock 8 mm, 10 mm, and 12.5 mm legs — measure your tile with callipers before buying.
When to Call a Professional Tiler
Fitting tile trim itself does not require a building permit or a licensed tradesperson in Greece, and a competent DIYer can handle a straight run in a kitchen or hallway. However, if the trim is part of a wider tiling job that involves waterproofing a wet room, building a curbless shower, or tiling over a heated floor system, the underlying work should be done by an experienced tiler. Waterproofing membranes in particular must be installed correctly to avoid damp ingress into the structural screed — a mistake that shows up slowly over months and can be expensive to fix. For any project in a rented property or hotel where guests will use the space, professional fitting is worth the investment for liability reasons alone.
How to Fit Tile Trim: Step-by-Step
- 1
Plan the layout and mark the trim position
Before mixing any adhesive, dry-lay your tiles and hold a length of trim in position at the intended edge. Mark the wall or floor with a pencil line along the back of the trim leg so you know exactly where the adhesive bed must stop. The trim sits in the adhesive alongside the tiles, not on top of them — its front lip rests flush with the tile face. For a horizontal run, use a spirit level to confirm the line is true; a tilting trim will be obvious once grouted.
- 2
Cut the trim to length
Use a fine-tooth hacksaw or a mitre box with a metal-cutting blade. For straight runs simply measure and cut square. For internal corners, cut both pieces square and butt them together — do not attempt to mitre internal corners as the gap fills with grout and a mitre here tends to open over time. For external corners, cut each piece at 45 degrees with a mitre saw or an angle grinder with a cutting disc. Smooth any burr with a metal file or fine sandpaper so the cut end is safe to handle and sits flat.
- 3
Bed the trim in tile adhesive
Apply tile adhesive to the wall or floor in the normal way using a notched trowel. Press the trim's perforated leg firmly into the adhesive bed alongside the last row of tiles so the front lip of the trim aligns with the tile face surface. The perforations in the trim leg key into the adhesive and hold the strip in place. Use small pieces of tile spacer or off-cuts of card to prop the trim at exactly the right height while the adhesive sets — especially important on vertical runs where gravity will pull the strip down before the adhesive grabs. Leave the adhesive to cure for the time stated on the packaging, typically 24 hours, before grouting.
- 4
Set and align the adjacent tiles
Once the trim is bedded, press the final row of tiles into place so their face edges butt up to the trim lip. The trim lip should sit flush with — or fractionally proud of — the tile surface; 0.5 mm proud is acceptable and easier to achieve than dead flush. Use a straight edge laid across several tiles and the trim to check alignment as you work. Adjust any tile with a gentle tap of a rubber mallet before the adhesive sets. Place spacers between tiles as normal to keep the grout joint consistent.
- 5
Grout, clean, and seal
After the adhesive has fully cured, fill the joints between tiles and between the tile edge and the trim with unsanded grout for joints up to 3 mm, or sanded grout for wider joints. Work the grout into the joint alongside the trim with a grout float held at 45 degrees, pressing firmly so no voids remain behind the trim lip. Wipe excess grout from the trim face immediately with a damp sponge — dried grout on polished metal or chrome trim is difficult to remove without scratching. For wet areas such as showers and around baths, run a thin bead of sanitary silicone (not grout) in the joint where the trim meets the bath or shower tray, as this joint needs to flex and must remain watertight.
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FAQ
- Can I fit tile trim over existing tiles without retiling?
- Only if the existing tile edge is fully exposed. You cannot retrofit a standard L-trim over a finished tile face — the strip sits in the adhesive bed during installation. However, if you have an exposed cut edge on an existing tiled wall, an adhesive-backed edge strip or a surface-mounted cover strip can be glued on with epoxy or construction adhesive as a cosmetic fix. Results vary by surface condition.
- What is the best trim for a walk-in shower in Greece?
- Grade 304 stainless steel is the standard choice for shower enclosures in the Greek climate because it resists both humidity and the coastal salt air common near the sea. Avoid chrome-plated zinc alloy trims in wet areas — the plating tends to pit within a few years in humid conditions. Schluter-style profiles with a rubber sealing lip offer the cleanest look and the best water resistance at the tile-to-trim joint.
- How do I cut a perfect 45-degree mitre on tile trim for an external corner?
- Mark the trim at the corner point, then cut at 45 degrees using a mitre box and a fine-tooth hacksaw or a chop saw with a metal blade. File any burr smooth. Test the fit dry before bedding — the two pieces should meet tightly with no gap at the corner point. If a small gap remains, fill it with matching coloured silicone or grout rather than forcing the joint, which can bow the trim.