Tile Edge Polishing and Processing in Warsaw
18.03.2026Tile Edge Polishing and Processing in Warsaw
When tiles meet at an external corner, windowsill or countertop, the cut edge is visible. The factory edge of porcelain or sintered stone looks rough: a matte cut, sometimes with micro-chips. A plastic trim is a budget fix but ruins the look of premium tiles. Professional edge processing means grinding and polishing the edge at 45 degrees (mitring) or straight polishing to smoothness, so the joint looks seamless. We use Rubi and Montolit diamond discs and polishing pads of varying grit. We work across Warsaw — from Srodmiescie to Bielany. Need a perfect joint without plastic trims? Give us a call.
How much it costs and what affects the price
The cost depends on the processing type (45-degree mitre, straight polish, chamfer), tile material (porcelain is quicker; sintered stone and natural stone take longer), edge length and number of corners. An external corner with both tiles mitred equals two edges. A tile windowsill has four edges. Consumables (diamond discs, pads) are included. Current prices are in the table below.
| Service | min | max |
|---|---|---|
| Edge polishing (gloss) | 60 zł/mb | 90 zł/mb |
| Polished visible edge | 40 zł/mb | 70 zł/mb |
| Straight precision cut (factory edge) | 25 zł/mb | 40 zł/mb |
| Large format precision cut | 60 zł/mb | 100 zł/mb |
| Sintered stone precision cut | 80 zł/mb | 140 zł/mb |
| Tile grinding at 45° | 60 zł/mb | 90 zł/mb |
How edge processing works
- Determine the processing type. 45-degree mitre for external corners where two tiles meet edge-to-edge. Straight polish for windowsills, exposed edges and countertops. Chamfer for lightly rounding a sharp edge for safety.
- Secure the tile. We clamp it on a Sigma or Montolit professional cutter with a guide rail. For mitring we set the 45-degree angle on the machine.
- Rough grinding. A diamond disc removes the bulk of the material. On porcelain — dry with dust extraction. On sintered stone — with water cooling.
- Fine grinding. Diamond polishing pads at 50, 100, 200 and 400 grit. Each step removes scratches left by the previous one.
- Polishing. A final 800 or 1500 grit pad brings the edge close to the factory face finish. On polished porcelain the result is indistinguishable.
- Quality check. We inspect under light — no chips, scratches or unevenness. Problem areas are re-polished if needed.
Common mistakes when processing tile edges
- Mitring with an angle grinder without a guide — uneven angle, chips, wavy edge. Only a cutter with a guide rail.
- Too-thin edge tip — the tile chips at the point. Leave at least 1 mm before the glaze.
- Skipping grit steps — jumping from 50 straight to 400 leaves visible scratches. Every step is required.
- Dry grinding sintered stone — it overheats without water and cracks. Wet processing only.
- Mitring budget tiles — the thin glaze layer chips off, exposing the body. Not every tile is worth mitring.
- No chamfer on internal corners — the sharp edge cuts hands during cleaning. Even a minimal chamfer solves it.
- Polishing without dry-fitting — edges processed first may not align at installation. Always dry-fit before final polishing.
What to prepare before the technician arrives
- Tiles cut to size (or we can cut on site).
- Identify which edges are visible — those need processing.
- Specify the type: 45-degree mitre or straight polish.
- If tiles are already on the wall — indicate which corners need work.
- Ensure power supply — grinder and cutter run on mains.
- Have water available if working with sintered stone or natural stone.
- Clear the work area — grinding creates dust even with extraction.
- Protect furniture and appliances with sheeting.
- Have spare tiles — there is a small chipping risk during mitring.
- Provide access details: intercom, parking, floor number.
A real case from Warsaw
An apartment in Srodmiescie, a bathroom with large-format 120×60 cm porcelain tiles. The designer specified external corners without plastic profiles — clean 45-degree joints. We did the mitring on a Sigma cutter with a guide: diamond disc for the initial cut, then polishing pads at 50-100-200-400-800 grit. We processed 12 linear metres of edge — six external corners and a shampoo niche. Every joint was dry-fitted before final polishing. The result — corners look like a continuous surface with no gaps or plastic. The edge work took one day; tiling was separate. The client noted that the absence of trims created a high-end feel. Takeaway: mitring pays off on quality porcelain with a thick glaze layer — for budget tiles an aluminium Mapei profile is the better choice.
Frequently asked questions
What is tile mitring?
Cutting the tile edge at 45 degrees so two tiles meet at an external corner without a plastic trim. The result looks like a seamless surface.
Can any tile be mitred?
No. Budget tiles with thin glaze chip easily. Mitring works well on porcelain, sintered stone and dense natural stone.
Why is mitring better than a plastic trim?
Aesthetics: a clean joint with no extra elements. Plastic trims yellow, peel off and collect dirt. A mitred corner lasts permanently.
How long does it take?
One external corner (two edges of 2.5 m) — about an hour. A full bathroom (10-15 m of edge) — half a day to one day.
Can tiles already on the wall be mitred?
It is technically harder and less precise. Processing before installation is preferred.
What is included in the price?
Labour, diamond discs, polishing pads and travel. Tiles are purchased by the client.
Is there a risk of damaging tiles?
Minimal with professional equipment. Budget tiles with thin glaze carry a higher chipping risk — we warn in advance.
Can natural stone be polished?
Yes. Marble, granite and travertine are polished with diamond pads to a mirror finish using a wet process.
What tools do you use?
Rubi, Montolit, Sigma — professional tile cutters and polishing systems.
Do you offer a warranty?
Yes, on processing quality. Visible defects will be corrected at no charge.
Who does the work
Edge processing is carried out by tile specialists skilled in working with professional Rubi and Montolit machines — mitring and polishing require precision and patience. We arrive with a tile cutter and a full set of diamond discs and pads. We cover all of Warsaw. Call or message us — we will assess the scope and give you an exact price.