How To Remove Silicone From Tiles
How do you remove silicone from tiles without damaging them?
Cut the bulk of the bead away with a sharp blade, soften the rest with Selleys Sealant Remover, then scrape it off and clean the surface with solvent. The whole method is designed so that you are not scraping hard against the glaze — the remover does the work that would otherwise take pressure, and pressure is what scratches tiles.
Tiles are a slightly special case for two reasons. The glazed face is hard but scratchable, and the grout lines between the tiles are porous and hold onto silicone in a way a smooth surface does not. Both are dealt with below.
What you need
- Selleys Sealant Remover — 375 g tub
- A sharp blade or a sealant remover tool
- A scraper
- Mineral turpentine
- A cloth or rag for cleaning
- Protective gloves
How to remove the silicone
- Cut away the worst of the sealant using a sharp blade. Run the blade along both edges of the bead so the silicone lifts in long pieces rather than crumbs. Keep the blade close to parallel with the tile face — a blade held at an angle digs into the glaze. Cut back until only a very thin layer, less than 5 mm deep, is left.
- Ensure the surfaces are completely dry.
- Apply Selleys Sealant Remover over the old silicone, spread evenly with a scraper or brush to a layer at least 5 mm thick — the thickness specified on the product's own technical data sheet. Apply it to a small area first to test.
- Allow at least 10 minutes for thin beads of sealant to soften. It can take significantly longer if the silicone was not cut back first, and thicker residue may require multiple applications. Make sure the remover does not dry out while it works.
- Scrape the softened silicone away with a scraper or sealant remover tool, working forwards and backwards.
- Clean the residue and your tools with mineral turpentine. Do not use water.
Wear protective gloves, avoid breathing the vapours, and work in a well ventilated area.
Why cutting back first matters more on tiles
The instruction to cut the sealant back before applying the remover is not about saving product. Sealant Remover works by penetrating the silicone; the deeper the material, the longer it takes and the more likely you are to end up scraping at partly softened rubber.
On a tiled surface, scraping at partly softened silicone is exactly the wrong outcome — it means force, and force against a glazed face with a metal scraper is what leaves marks. Cut properly, wait properly, and the residue comes off with almost no pressure at all.
The grout line is the part people miss
Grout is porous. Where a bead has sat against a grout joint for years, silicone has worked into the surface texture and will not lift with a scraper. Give that strip a second application of remover and a little more time, and take the scraper along the grout line rather than across it.
Two related points from the product's own limitations:
- It will not remove staining caused by old penetrated silicone oils. If the grout has darkened where the bead was, that is a stain in the grout rather than residue on it, and no amount of further work with the remover will lift it. Cleaning with Selleys White For Life Tile & Grout Cleaner is the next thing to try.
- Do not leave it on porous materials for extended periods. Grout is a porous material. Apply, let it work, remove it on time.
Sealant Remover — where it works and where it does not
| Property | Typical result |
|---|---|
| Appearance | Light beige coloured smooth paste |
| Removal time | 10 minutes |
| Packaging | 375 g tub |
| Works on | Silicone, acrylic, SMP/hybrid and polyurethane sealants |
Indicative data only, not intended for the preparation of specifications.
Suitable surfaces: ceramic tiles, porcelain, glass, grout, most metals, brass, laminate, most plastics, masonry, coated timber and most painted surfaces.
Limitations:
- Not suitable for rubber, EPDM or polycarbonate. Mask off any rubber seal or polycarbonate panel near the joint.
- May affect some surfaces — test compatibility before use, which matters on unusual or decorative tiles.
- Not to be left on porous materials or acrylic-painted surfaces for extended periods.
- Will not remove staining from old penetrated silicone oils.
Resealing after removal
Once the tiles are clean and dry, replacing the silicone is four steps:
- Mask both sides of the joint with masking or painters tape for a neat finish.
- Apply Selleys No Mould, making sure the sealant is pushed into the joint.
- Tool the sealant with a spatula dipped in detergent water within 5 to 10 minutes of application, and remove the tape before the product skins.
- Clean up any residual excess silicone with turps.
No Mould is waterproof and shower ready 1 hour after application, with full cure at at least 48 hours, and it must not be touched in between. Its published skin time is 20 minutes and its cure rate is 2 mm per 24 hours. The full method is at how to replace old silicone.
If there was mould in the old bead, spray Selleys Rapid Mould Killer into the gap first to kill any residual mould, and dry the area thoroughly before sealing. An established colony can penetrate a new seal even where the new product contains mould inhibitors — patch test the mould killer first, as staining may occur on some matt finish tiles or in hard water areas.
Common questions about removing silicone from tiles
Will scraping scratch my tiles?
It can, if you scrape hard against partly softened silicone. Cut the bead back first, let the remover work its full 10 minutes, and the residue lifts with very little pressure.
How thick do I spread the remover?
At least 5 mm, over silicone already cut back to less than 5 mm deep.
How long do I leave it?
At least 10 minutes for thin beads. Longer, or a second application, for anything thicker.
What do I clean up with?
Mineral turpentine — not water.
Can I use it on grout?
Yes, grout is a listed surface. But do not leave it on for an extended period, since grout is porous.
Why is the grout still dark where the bead was?
Staining from old penetrated silicone oils, which this product does not remove. Try a tile and grout cleaner.
Is it safe on a glass shower screen?
Yes, glass is a listed surface. Rubber seals and polycarbonate panels are not — keep it off those.
Do I need to remove all of it?
Yes. New silicone bonds to residue rather than to the tile, which is the most common reason a fresh bead fails within a year.
Can I use a heat gun instead?
The published method is cut, soften with Sealant Remover, scrape and clean with mineral turpentine. That is the process Selleys supports for this job.
How long until I can reseal?
As soon as the tiles are clean and completely dry. Do not seal onto a damp surface.
Is there a general version of this guide?
Yes — how to remove old sealant covers the same method for glass screens, metal laundry tubs and other surfaces.
What product does Selleys recommend for removing silicone from tiles?
Selleys recommends Selleys Silicone Remover, a product specifically formulated to dissolve and facilitate the removal of cured sealants from tiles.
How long does Selleys Silicone Remover take to work?
Selleys Silicone Remover is fast-acting and works in approximately 10 minutes.
What types of sealants can Selleys Silicone Remover be used on?
Selleys Silicone Remover is suitable for silicone, acrylic, SMP/hybrid, and polyurethane sealants.
Is Selleys Silicone Remover safe to use on tile surfaces?
Yes, it is surface-safe and will not harm most surfaces and finishes, and it can be applied on both horizontal and vertical surfaces.
What is the first step in the process of removing silicone from tiles with Selleys Silicone Remover?
First, prepare the area by scraping or cutting off the old sealant so that only a very thin layer of less than 5mm depth remains, ideally using a sealant remover tool.
How should Selleys Silicone Remover be applied to old sealant?
Use a scraper or brush to spread at least a 5mm thick layer of Selleys Silicone Remover evenly over the old sealant, then leave it for at least 10 minutes (a second application may be needed in some cases).
How do you remove the softened sealant after applying the remover?
Use a scraper or sealant remover tool in a forward and backward motion to remove the softened sealant from the surface.
What should be used to clean up residue and tools after removing silicone?
Any residue and tools should be cleaned immediately with mineral turpentine for best results.
Are there alternative methods to remove silicone from tiles without using a chemical remover?
Yes, cured silicone can also be removed by scraping or sanding it away, or by cutting and scraping it with a sharp blade.
Why is it recommended to cut away as much old sealant as possible before applying the remover?
Cutting away as much old sealant as possible allows the remover to penetrate more effectively, making the removal process easier.