Which adhesive should I use for tiles?
Which adhesive should I use for tiles?
A cement-based thin-set in almost every case; ready-mixed tub adhesive only on small dry walls, never on floors or in showers.
Ready-mixed adhesive is a dispersion that hardens only as its water leaves, so it depends on a porous substrate and a porous tile to dry at all. Behind a large-format porcelain tile — which is effectively impervious — or in a shower where water eventually reaches it, that water has nowhere to go, and the adhesive can stay soft or soften again years later. Cement thin-set hydrates instead, so it cures regardless. The other half of a durable tiled surface is coverage: a solid bed under the tile, achieved with the right notch size and by back-buttering large tiles, prevents the voids that crack tiles under point load and let water sit. Movement matters too, which is why timber floors need a flexible grade and a properly decoupled or overboarded substrate.
The options, ranked
| Option | Good at | Bad at |
|---|---|---|
| Cement-based thin-set | Cures chemically, so it works in wet areas and under load, and flexible (S1 or S2) grades handle timber floors and underfloor heating. | Mixed on site, has a working life of half an hour or so, and is unforgiving once it starts to go off. |
| Ready-mixed dispersion adhesive | Convenient, no mixing, good grab for small ceramic tiles on a dry plastered wall. | Dries by losing water, so behind a large or impervious tile it never fully sets, and it re-emulsifies when wet. |
| Rapid-set thin-set | Grouting the same day, useful on floors that must be walked on quickly. | Very short working time; a large floor goes off in the bucket while you are still laying. |
| Epoxy tile adhesive | Chemical and stain resistant, for commercial kitchens, swimming pools and industrial floors. | Expensive, awkward to work, and unnecessary in a domestic setting. |
Technique that changes the outcome
- Match the notched trowel to the tile size, and check coverage by lifting the first tile back off
- Back-butter tiles over about 300 mm; a notched bed alone leaves voids under large formats
- Use a flexible S1 grade over timber, underfloor heating or anything that moves
- Respect the open time — adhesive that has skinned over has stopped sticking even though it looks wet
- Leave the specified movement joints at perimeters and over substrate joints
What goes wrong
- Ready-mixed adhesive on floors, in showers or under large tiles
- Tiling straight onto flexing floorboards without overboarding or decoupling
- Grouting before the adhesive has cured — trapped moisture discolours the grout
Compiled practical guidance rather than a published standard. Product formulations vary by brand and market, so read the label — and where the work is structural, electrical or gas, the regulations that apply where you are govern rather than anything here.
Other glue and adhesive questions
| For | Use |
|---|---|
| Plastic | It depends entirely on which plastic — identify it first, because solvent cement is unbeatable on some and useless on others. |
| Polypropylene and polyethylene | Ordinary adhesives cannot wet these plastics at all. Use a polyolefin primer with cyanoacrylate, an MMA structural adhesive, or weld the plastic. |
| Wood | PVA wood glue for anything indoors; a water-resistant grade (Type I / D4) or polyurethane for anything that gets wet. |
| Metal | Two-part epoxy for anything structural, cyanoacrylate for small dry parts, and MMA where the surface cannot be properly prepared. |
| Ceramic and pottery | Two-part epoxy for anything that will be handled or loaded, cyanoacrylate for a clean break on a display piece — and neither is dishwasher-proof. |
| Shoes | A flexible shoe repair adhesive — polyurethane or a neoprene contact cement — never superglue, which cracks within a day of walking. |
| Fabric | A washable fabric adhesive or a fusible bonding web — and never superglue, which reacts with cotton violently enough to burn. |
| Glass | UV-cure glass adhesive for an invisible joint, clear epoxy where it must hold load, and neutral-cure silicone where it must stay flexible or wet. |
| PVC pipe | PVC solvent cement with its matching primer — and PVC, CPVC and ABS cements are not interchangeable. |
| Phone screens | A pre-cut adhesive gasket, or a flexible B-7000-type adhesive around the frame — superglue destroys screens and is the classic mistake. |
| Rubber | Contact cement for large flexible areas and rubber-toughened cyanoacrylate for small ones — but silicone and EPDM need a primer or they will not bond at all. |
| Outdoor and waterproof joints | Polyurethane or epoxy for rigid joints, MS polymer where the joint has to move — and check the water-resistance class rather than the word "waterproof". |
| Acrylic (Perspex, Plexiglas) | A solvent cement run into the joint by capillary action — not a tube adhesive, which will always look like a repair. |
| Concrete | Epoxy or a construction adhesive for bonding to it, and a chemical anchor resin — not glue — for anything that carries load. |
| Leather | Contact cement for a permanent flexible bond, or a leather-craft PVA to hold pieces while you stitch them. |
| Silicone | Effectively only more silicone, and even that needs a primer — and any silicone residue left on a surface stops everything else sticking too. |
| Paper | A glue stick or PVA for everyday work; wheat starch paste or methylcellulose for anything you want to survive — and never tape. |
| Foam | A foam-safe water-based adhesive or low-temperature hot melt — solvent adhesives dissolve polystyrene on contact. |
| Polycarbonate | A urethane or silicone adhesive is safest; solvent cements work but polycarbonate is unusually prone to stress cracking days later. |
Common questions
- Which adhesive should I use for tiles?
- A cement-based thin-set in almost every case; ready-mixed tub adhesive only on small dry walls, never on floors or in showers.
- What should I avoid?
- Ready-mixed adhesive on floors, in showers or under large tiles Tiling straight onto flexing floorboards without overboarding or decoupling Grouting before the adhesive has cured — trapped moisture discolours the grout
Related pages
- Which glue works on plastic? It depends entirely on which plastic — identify it first, because solvent cement is unbeatable on some and useless on others.
- Which glue works on polypropylene and polyethylene? Ordinary adhesives cannot wet these plastics at all. Use a polyolefin primer with cyanoacrylate, an MMA structural adhesive, or weld the plastic.
- Which glue works on wood? PVA wood glue for anything indoors; a water-resistant grade (Type I / D4) or polyurethane for anything that gets wet.
- Which glue works on metal? Two-part epoxy for anything structural, cyanoacrylate for small dry parts, and MMA where the surface cannot be properly prepared.
- Which glue works on ceramic? Two-part epoxy for anything that will be handled or loaded, cyanoacrylate for a clean break on a display piece — and neither is dishwasher-proof.
- Which glue works on shoes? A flexible shoe repair adhesive — polyurethane or a neoprene contact cement — never superglue, which cracks within a day of walking.
- Which glue works on fabric? A washable fabric adhesive or a fusible bonding web — and never superglue, which reacts with cotton violently enough to burn.
- Which glue works on glass? UV-cure glass adhesive for an invisible joint, clear epoxy where it must hold load, and neutral-cure silicone where it must stay flexible or wet.
- Which glue works on PVC pipe? PVC solvent cement with its matching primer — and PVC, CPVC and ABS cements are not interchangeable.
- Which glue works on a phone screen? A pre-cut adhesive gasket, or a flexible B-7000-type adhesive around the frame — superglue destroys screens and is the classic mistake.
- Which paint can I use on tiles? Paint
Sources
- Official vendor product documentation — At One Place