Ardex X5 Large/Heavy Tile & Stone Mortar - Grey/White (40lb)
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- Large and heavy tile mortar formulated specifically for demanding installations — the high-polymer content creates the flexible bond large natural stone and heavy porcelain slabs require to handle thermal movement without debonding
- Available in grey and white; exceeds ANSI A118.15 standard for highly polymer-modified mortars; suitable for floor heating systems, exterior applications, and substrates prone to minor flex
- 40 lb bag; mix with water only; bonds ceramic, porcelain, marble, granite, and large-format stone to concrete, cement board, and similar substrates; trusted by Canadian tile contractors
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Description
Description
Large format tile is a beautiful choice — and a technically demanding one. The bigger the tile, the more critical it is that your mortar fully supports the whole back face without voids. Ardex X5 is designed for exactly this: heavy, large-format tile and stone where standard thin-set mortars fall short.
The formula has extended open time, which gives you the working time needed to properly back-butter and set large slabs. The non-sag consistency holds heavy tile in place on vertical surfaces without slipping.
When to use Ardex X5
- Porcelain slabs 24" × 24" and larger
- Heavy natural stone — marble slabs, granite, travertine in large format
- Vertical stone cladding and shower walls with heavy tile
- Any application where full-coverage mortar support is critical
Pro Tip: Full back-buttering is non-negotiable with large format tile. Use a notched trowel on the floor/wall AND butter the back of the tile, then press and slide into final position. You should see mortar squeeze out around all four sides when the tile is set correctly. Any voids under a large tile will crack it eventually.
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