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Kerakoll 20kg Setaflex Standard Set S1 White Tile Adhesive

Name: Kerakoll 20kg Setaflex Standard Set S1 White Tile Adhesive
Brand: Kerakoll
SKU: B129158
Price: 19.79 GBP
Availability: InStock

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Cement-based powder adhesive — requires mixing before use. Add water on site and mix mechanically before applying. Need to grout the same day? See Setaflex Rapid Set S1 — walk on and grout after just 3 hours.

Setaflex Standard Set S1 is Kerakoll's standard-setting deformable mineral adhesive for porcelain tiles, ceramic tiles and natural stone. Classified C2 TE S1, it offers a generous 3–4 hour pot life and a 60-minute open time — making it well suited to larger installations, complex set-outs, and any job where working time matters more than a fast return to service. S1 flexibility means it accommodates the natural movement of substrates including underfloor heating systems, timber floors and calcium sulphate screeds. Suitable for floors and walls, internal and external, including terraces, balconies and swimming pools.

EN 12004 C2 TE S1

S1 flexible — deformable

EMICODE EC1 Plus — very low VOC

3–4 hour pot life

Indoor & outdoor

Swimming pools suitable

Underfloor heating compatible

EPD certified — B Corp manufacturer

Pack size

20 kg

Type

Powder — mix with water

Classification

C2 TE S1

Colour

White

Pot life Extended
≈ 3–4 hours

Open time Extended
≥ 60 min

Grout after (floor, 23°C)

≈ 24 hrs

Grout after (wall, 23°C)

≈ 24 hrs

Foot traffic

≈ 1 day

Heavy traffic

≈ 3–5 days

Swimming pools

≈ 7 days

Bed thickness

2–12 mm

Coverage (6mm notch)

≈ 6.1 m² / bag

App. temperature

+5°C to +35°C

VOC emissions Very low
EC1 Plus

Shelf life

≈ 12 months

Works with

Porcelain tiles — all sizes including large format

Ceramic tiles

Natural stone

Glass mosaics

Low thickness slabs and large format

Terracotta and klinker

Floors and walls, internal and external

Swimming pools and fountains (7-day cure)

Underfloor heating systems

Terraces and balconies

Overlaying existing tiles (with primer)

Timber substrates — internal, with Prime+ Grip

Calcium sulphate / anhydrite screeds — with Primeplus

Not suitable for / special conditions

Natural stone prone to water staining — use rapid-setting adhesive

Reactive waterproofing membranes — use a reactive adhesive

Correcting substrate irregularities >12 mm

Anhydrite screeds with residual humidity >0.5 CM-%

Cement screeds with residual humidity >2 CM-%

Where same-day grouting is required — use Setaflex Rapid Set S1

Standard Set vs Rapid Set — which do you need?

Setaflex Standard Set S1 (this product)

3–4 hour pot life — more working time

60-minute open time

Ideal for large areas and complex set-outs

Grout after 24 hours

Foot traffic after 1 day

Setaflex Rapid Set S1

30-minute pot life — work in small batches

15-minute open time

Grout after just 3 hours (floor) / 2 hours (wall)

Foot traffic after 3 hours

Ideal for renovation and commercial projects

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

Mixing & preparation

Prepare the substrate. Surfaces must be level, cured, undamaged, compact, rigid and dry. Remove dust, grease and any debonding agents.

Anhydrite screeds: residual humidity ≤ 0.5 CM-%. Cement screeds: ≤ 2 CM-%. With underfloor heating: anhydrite ≤ 0.3 CM-%.

Prime the substrate. Porous substrates (cement render, plasterboard, brick, screeds): Primeplus diluted 3:1, coverage ≈ 40 m²/kg. Anhydrite: 1st coat 3:1, 2nd coat undiluted at 8 m²/kg. Existing tiles, timber, metal, PVC: Prime+ Grip undiluted at 10 m²/kg. Allow primer to dry fully before tiling.

Underfloor heating. Commission and test the system fully before tiling. Set to a maximum of 15°C during installation and for 7 days after. Then increase at 5°C per day to operating temperature.

Do not exceed 15°C during installation.

Mix. Add powder gradually to ≈ 4.4–4.6 litres of clean water per 20 kg bag. Mix mechanically until smooth with no lumps. Do not remix once the adhesive begins to set.

Pot life ≈ 3–4 hours at 23°C — mix only what you can use within this time.

Set out. Mark a horizontal datum line and the vertical centre before mixing. Dry-lay tiles to check cut sizes at edges.

Fixing & finishing

Apply adhesive in sections of approx. 1 m² using a notched trowel. Comb in one direction.

6mm notch for wall tiles. 10–12mm notch for floor tiles and large formats.

Do not fix tiles once a skin has formed on the adhesive surface.

Solid bed for floors and exterior. Butter the back of each tile as well as the substrate. Minimum coverage: 65–70% on dry internal walls, 100% on floors, wet areas and all external surfaces.

Fix tiles. Press firmly with a twisting action and tap level. Adjust within the open time. Remove surplus adhesive from joints and tile faces promptly with a damp cloth.

Movement joints. Leave at all perimeters, internal corners and changes of material. Internal without UFH: every 100 m². With UFH: every 40 m². External: every 10 m². Fill with silicone sealant, not grout.

Grout. Allow ≈ 24 hours before grouting on both floors and walls at 23°C. Use silicone at all junctions and movement joints.

Swimming pools: wait 7 days before filling.

Need to grout sooner? Use Setaflex Rapid Set S1 — grout after 3 hours.

Downloads

Technical data sheet Environmental Product Declaration Safety data sheet