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Primo Fixx tile adhesive by Bhandari Enterprises logoBhandari EnterprisesTile & Marble Chemicals

How it works

The seven steps to a floor that never drums

Polymer-modified adhesive bonds chemically to the tile and the substrate in a thin bed. Follow this method and a tile laid today will still be tight decades later.

Applicator combing Primo Fixx tile adhesive into an even ribbed bed

The principle

Thin bed, chemical bond, no water on site

Traditional sand-cement beds are 20–40 mm thick, shrink as they dry and trap air pockets that later become hollow, drummy tiles. A 3–6 mm adhesive bed grips both faces, carries far less dead load and lets you tile straight over existing tiles.

  • No tile soaking and no curing water
  • Faster laying with fewer labour hours
  • Cleaner site, less wastage per square foot
  • Fewer hollow tiles means fewer callbacks

Step by step

The application method

  1. Freshly combed tile adhesive ridges on a prepared substrate
    01

    Prepare the surface

    Substrate must be clean, sound, level and free of dust, oil or loose material. Dampen very absorbent surfaces; never apply on a flooded slab.

    Level tolerance within 3 mm
  2. Worker mixing tile adhesive in a bucket with a paddle mixer
    02

    Mix the adhesive

    Add 5.5–6 litres of clean water per 20 kg bag, mix to a smooth lump-free paste with a paddle mixer, rest 5 minutes and remix.

    Pot life 2 hours
  3. Applicator combing tile adhesive with a notched trowel
    03

    Apply with a notched trowel

    Spread with a 6 mm x 6 mm square notched trowel over an area you can tile within 15 minutes. Back-butter large format tiles.

    Open time 15 minutes
  4. Finished washroom with large format tiles laid on adhesive
    04

    Set and adjust the tile

    Press and slide the tile into the ridges to collapse them, then tap for full contact. Alignment can be corrected for up to 20 minutes.

    Adjusting time 20 minutes
  5. Modern kitchen with tiled backsplash and glossy floor tiles
    05

    Cure, then grout

    Leave undisturbed for 24 hours before grouting or light traffic. No water curing is required.

    Set in 24 hours
  6. Tiled exterior elevation of a commercial building
    06

    Reach full strength

    The bond continues to develop and reaches full designed strength after 28 days of service.

    1.1 N/mm² tensile

Curing timeline

What happens, and when

One 20 kg bag, from the moment water goes in.

  1. 0 minMixed & rested
  2. 15 minOpen time ends
  3. 20 minLast chance to adjust
  4. 2 hrsPot life ends
  5. 24 hrsGrout & light traffic
  6. 28 daysFull strength

Watch

See it explained

Why tile adhesive is important in your house

Hollow beds, seepage and popped tiles — what actually goes wrong behind a floor, and how a thin-bed adhesive prevents it.

Primo Fixx technical walkthrough

Coverage per bag, water ratio, open time and strength figures explained straight off the pack.

Site tips that save rework

  • Mix only what your team can lay within two hours.
  • Comb in one direction so air can escape under the tile.
  • Back-butter tiles above 600 x 600 mm for full contact.
  • Keep 3 mm joints — grout absorbs the movement, not the tile.
  • Cover freshly laid floors from direct sun and site traffic.
  • Work on a dry, dust-free, cured surface.
  • Use the correct notch size for the tile size.
  • Store bags dry, off the floor, and use within 12 months.

Avoid these five mistakes

  • Adding water to stiffened paste — it permanently kills the bond.
  • Dabbing five blobs instead of combing a full bed.
  • Tiling over dust, curing compound, oil or loose plaster.
  • Grouting before 24 hours have passed.
  • Water curing the floor — it is not needed and washes out polymer.
  • Do not soak tiles in water.
  • Do not tile onto freshly cast, uncured concrete.