Tile Adhesives Buyer's Guide — TradieCart
Browse Australia's widest range of tile adhesives from leading brands including Ardex, Laticrete, Kerakoll, Keratrade, Demtech, Enviro Systems, Megapoxy, and more. Whether you're tiling a residential bathroom, a commercial fitout, or a swimming pool, you'll find the right adhesive here.
Understanding Adhesive Classifications
Tile adhesives in Australia are classified under AS ISO 13007. Knowing the codes helps you pick the right product for the job:
- C1 — Standard cement-based adhesive. Suitable for interior floor and wall tiling on stable substrates.
- C2 — Improved bond strength. Required for exterior tiling, large-format tiles, porcelain, and high-traffic commercial areas.
- S1 — Deformable (flexible). Accommodates minor substrate movement — recommended for heated floors, timber substrates, and tiles over 600mm.
- S2 — Highly deformable. Maximum flexibility for swimming pools, facades, and substrates with significant movement.
- T — Thixotropic (non-slip). Resists sag on vertical surfaces — essential for wall tiling.
- E — Extended open time. Gives you longer working time before the adhesive skins over.
- F — Fast setting. Allows grouting the same day — ideal for commercial turnarounds.
For example, a C2 T E S1 adhesive is an improved-bond, non-slip, extended open time, flexible adhesive — suitable for large-format wall tiles on cement sheet.
Popular Products
| Product | Best For |
|---|---|
| Ardex X17 | The go-to for most residential and light commercial tiling — walls and floors, internal and external. Cost-effective polymer modified adhesive with extended open time and non-slump formula. Choose X17 when you don't need swimming pool or fibre-reinforced performance. |
| Ardex X18 | Premium all-rounder with fibre reinforcement and S1 flexibility. Suits everything X17 does plus swimming pools (with E90 additive for S2), large-format tiles, and demanding commercial work. The upgrade when you need maximum versatility. |
| Ardex X77 | High-performance adhesive with Microtec Technology for extra-long open time and superior slump resistance. Best for large-format tiles on walls and floors, including swimming pools. The step up from X18 for the most demanding applications. |
| Ardex D2 | Pre-mixed mastic adhesive — zero mixing, ready to go. Internal walls only (not floors). Ideal for splashbacks, feature walls, and wet-area wall tiling where convenience is king. |
| Ardex Optima | Two-part adhesive for difficult substrates — tile directly over existing tiles, steel, fibreglass, or particleboard without grinding. S2 classified and swimming pool rated. The problem-solver for renovation and overlay work. |
| Laticrete 254 Platinum | Laticrete's flagship thin-set mortar. High tack, extended open time, rated for pools, steam rooms, radiant heat, and tile-over-tile. A strong alternative to Ardex for tradies who prefer the Laticrete system. |
| Laticrete Latapoxy 300 | Three-part epoxy adhesive for chemical-resistant installations. Prevents curling of moisture-sensitive marble, suits glass mosaics and resin-backed tiles. The specialist choice for high-end commercial and wet environments. |
Quick Recommendation Guide
- Standard residential bathroom or kitchen on concrete → Ardex X17 — cost-effective C2 adhesive with extended open time, handles walls and floors
- Swimming pool tiling → Ardex X18 (with E90 additive for S2 rating) or Laticrete 335 Premium — both rated for permanent water immersion under AS 3958.1
- Large-format tiles (600mm+) on walls → Ardex X77 with Microtec Technology for maximum open time and zero slump, or Keratrade Lite S1 for a lightweight option
- Fast turnaround — grout the same day → Kerakoll BioGel Revolution (C2F fast set) or Laticrete 335 Rapid
- Tiling over existing tiles without grinding → Ardex Optima two-part system — S2 classified, bonds to tiles, steel, fibreglass, and particleboard
- Natural stone or moisture-sensitive marble → Laticrete Latapoxy 300 epoxy adhesive — prevents curling and discolouration. Always use white adhesive under natural stone
- Internal wall splashback — quick and easy → Ardex D2 pre-mixed mastic — no mixing required, ready to go straight from the tub
Adhesive Types
- Polymer Modified (Cement-Based) — The standard choice for most wall and floor tiling on concrete, render, and cement sheet. Cement-based with added polymers for improved bond strength and flexibility. Popular options include Ardex X17, Ardex X18, Laticrete 335, Kerakoll Bioflex S1, and Keratrade Keratile S1.
- Pre-Mixed (Mastic) — Ready-to-use paste adhesives that require no mixing. Ideal for internal wall tiling, splashbacks, and smaller jobs where convenience matters.
- Fast Setting — Rapid-cure adhesives that let you grout the same day. Useful for time-critical projects and commercial turnarounds, including Kerakoll BioGel Revolution and Laticrete 335 Rapid.
- Lightweight — Reduced-weight formulations for large-format tiles on walls, reducing sag and easing handling. Options include Ardex X68 and Keratrade Lite S1.
- Epoxy & Two-Part — Chemical-cure adhesives for specialist applications including vibration-prone substrates, high-performance commercial installations, and bonding to difficult surfaces like metal or existing tiles.
- Stone Adhesives — Polyester and hybrid adhesives for fabrication, repair, and installation of natural and engineered stone, including Diarex Superior EVO PLUS and Megapoxy Megabond.
Common Questions
White or grey adhesive — which one do I need? — White is mandatory under natural stone, marble, travertine, and any translucent or light-coloured tile — it prevents discolouration and dark shadows showing through. White is also the safer choice under thin porcelain panels and mosaics. Grey is fine under standard ceramic, darker porcelain, and thicker tiles where colour bleed-through is not a concern. When in doubt, go white.
Can I use any tile adhesive for a swimming pool? — No. Standard wet-area adhesives are not rated for permanent water immersion. Swimming pools require adhesives specifically approved for submerged applications under AS 3958.1. Use Ardex X18 (mixed with E90 additive for S2 classification) or Laticrete 335 Premium. Always confirm pool suitability on the manufacturer's current data sheet.
Should I use Ardex X17 or X18? — X17 is the cost-effective choice for standard residential tiling on concrete or cement sheet. Step up to X18 if your job involves a swimming pool, timber subfloor, large-format tiles, or commercial work — X18 adds fibre reinforcement and S1 flexibility. When in doubt, go X18.
Do I need to back-butter large tiles? — Yes. For tiles over 600 x 600mm, apply adhesive to both the substrate and the back of the tile to achieve full coverage and prevent hollow spots. Never spot-bond — always use a notched trowel for full-bed adhesion.
What trowel size should I use? — Match the trowel notch to the tile size. A 6mm notch suits mosaics, 10–12mm suits standard tiles, and 15mm+ for large-format tiles. Larger notches give a deeper adhesive bed for better coverage and bond strength.
Brands We Stock
We carry tile adhesives from Ardex, Laticrete, Kerakoll, Keratrade, Demtech, Enviro Systems, Megapoxy, Mapei, Bostik, SAS, Sika, ATA, RLA, Gripset, Davco, Dribond, Wedi, Diarex Superior, and more — with fast delivery across Australia and same-day dispatch in Metro Melbourne.
in Sydney