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Ultra Tile Fix 20kg ProFlex SPES Standard Set Flexible S1 Tile Adhesive

Name: Ultra Tile Fix 20kg ProFlex SPES Standard Set Flexible S1 Tile Adhesive
Brand: Ultra Tile Fix
SKU: B109690
Price: 21.60 GBP
Availability: InStock

£21.60 £24.00 10% OFF

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Colour | Grey

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Quantity

Cement-based powder adhesive — requires mixing before use. Mix with water on site. For the same S1 flexibility with rapid set properties and grout in 4 hours, see UltraTileFix ProFlex SP.

Grey or white? Use the white version when fixing light-coloured natural stone, pale tiles, glass mosaics, or translucent tiles where grey adhesive may show through grout joints. Both variants have identical technical performance — the white version is slightly higher priced.

A single-part, standard-setting, S1-classified flexible tile adhesive for walls and floors. Polymer-modified for enhanced adhesion, bond strength, and flexibility — suitable for areas where slight movement or vibration can occur. The extended 2-hour pot life makes it the preferred choice for large-format installations, complex layouts, or contractors who prefer to mix once and work at a comfortable pace. Bed thickness of 3–20mm makes it suitable for uneven substrates without a separate levelling compound.

EN 12004 C2TE S1

S1 flexible — rated for movement & vibration

Underfloor heating rated

25-year guarantee

EPD certified

Pack size

20kg bag

Type

Powder — mix with water

Classification

C2TE S1

Colours

Grey & White

Pot life generous
2 hours

Set time

16 hours

Grout after

18 hours

Light foot traffic

18 hours

Bed thickness flexible
3–20mm

Coverage

4.5kg/m² at 3mm

App. temp.

+5°C to +25°C

Shelf life

12 months

Works with

All ceramic & porcelain tiles

Glass & mosaic tiles

Natural stone — marble, granite, limestone, slate, travertine, quarry, terracotta

Brick slips

Interior & exterior walls and floors

Wet rooms & communal showers

Swimming pools

Electric & piped underfloor heating

Timber floors (over backer board)

Anhydrite & calcium sulphate screeds

Tile on tile

Conservatories

Not suitable for

Resin-backed tiles

Quartz tiles

Direct tiling to plywood (use backer board)

Soft or composite vinyl floor tiles

Remixing or rewetting once started to set

ProFlex SPES vs ProFlex SP — standard set or rapid set?

ProFlex SPES (this product)

2-hour pot life — mix once, work at pace

Extended open time for large format tiles

Grey or white — both available

Grout after 18 hours

Light foot traffic after 18 hours

ProFlex SP

60-minute pot life — work in small batches

Shorter open time — faster pace needed

Grey or white — both available

Grout after just 4 hours

Light foot traffic after 3 hours

How to mix and apply this adhesive Priming · mixing · setting out · fixing · grouting

Preparation & mixing

Prepare the substrate — it must be clean, dry, firm, and stable, free from dust, dirt, oil, and grease. Vacuum thoroughly after any sanding or mechanical abrasion — do not simply wipe with a wet sponge as this spreads dust rather than removing it.

Prime the substrate with UltraTile ProPrimer before tiling. Porous substrates (plaster, plasterboard, screed, render): two coats — first coat diluted 1:3 with water, second coat 1:1. Allow 1 hour between coats. Non-porous substrates (tile on tile, DPMs, foil-faced boards): single neat coat.

For underfloor heating — commission and test the system fully before tiling. Set to a maximum of 15°C during tiling. Do not exceed this as it can force-dry the adhesive and cause de-bonding.

Maintain 15°C for 7 days after installation. Then increase at 5°C per day to reach operating temperature.

Mix — add the powder slowly to 5.2–5.5 litres of clean water for a 20kg bag. Mix with a drill and paddle until smooth and slump-free. The mix is ready immediately and has a pot life of 2 hours at 20°C.

Do not remix or rewet material that has started to thicken or set.

Fixing & finishing

Apply adhesive in sections of 1m² at a time using a notched trowel. Bed thickness 3–20mm. Use the correct notch size:

Mosaics: 3×3mm at 6mm centres. Wall tiles: 5×5mm at 10mm centres. Floor tiles: 8×8mm at 16mm centres.

For floors and exterior applications use the solid bed method — apply adhesive to the floor and also butter the back of each tile. Press with a firm twisting action to achieve 100% contact.

Leave tile spacers and appropriate joint widths — 1–3mm for walls, 2–12mm for floors. Build in movement joints at all perimeters, internal corners, and at regular intervals across large areas.

Clean surplus adhesive from tile faces and grout lines with a clean damp cloth or sponge before it sets.

Allow a minimum of 18 hours before grouting or walking on the tiles. This may be extended on impervious or non-porous substrates. Always check the adhesive has set hard before grouting.

Use UltraTile ProGrout Smooth or ProGrout Flexible, available in a range of colours.

Downloads

All variants

Technical data sheet CE certificate

Grey variant

Grey safety data sheet Grey EPD certificate

White variant

White safety data sheet White EPD certificate