Mapei 20kg ADESILEX P9 tile adhesive

Name: Mapei 20kg ADESILEX P9 tile adhesive
Brand: Mapei
SKU: B096346
Price: 19.99 GBP
Availability: InStock

£19.99

Tax included. Shipping calculated at checkout.

In stock, ready to be shipped

Color | Grey Adhesive

Choose options

Quantity

Cement-based powder adhesive — requires mixing before use. Mix with water on site to a smooth paste. Available in grey and white. For a rapid-setting alternative when speed of installation matters, see Mapei Mapeker Rapid Set Flex.

Grey or white? Use the white version when fixing light-coloured natural stone, pale tiles, or translucent mosaics where grey adhesive may bleed through grout joints. The white version has very high white balance and is slightly more expensive. Both variants have identical technical performance.

A high-performance cement-based tile adhesive with no vertical slip and an extended 30-minute open time. Suitable for interior and exterior floors and walls — bonding ceramic, porcelain, and natural stone tiles and mosaics up to 600×600mm. Highly thixotropic, meaning it stays firmly in place on vertical surfaces even with heavy tiles, without sagging or slipping. Also suitable for small-format tiles in swimming pools and basins. Rated EMICODE EC1 Plus — very low emission, making it suitable for sensitive interior environments.

EN 12004 C2TE

EMICODE EC1 Plus — very low emission

Environmental Product Declaration (EPD)

No vertical slip

Pack size

20kg sack

Type

Powder — mix with water

Classification

C2TE (EN 12004)

Colours

Grey & White

Pot life generous
8+ hours

Open time extended
30 mins

Grout walls after

4–8 hrs

Grout floors after

24 hrs

Light foot traffic

24 hrs

Max tile size

600×600mm

Bed thickness

3–5mm

App. temp.

+5°C to +40°C

EMICODE low emission
EC1 Plus

Shelf life

12 months

Works with

All ceramic tiles (up to 600×600mm)

Porcelain tiles (up to 600×600mm)

Natural stone (moisture-stable)

Mosaics

Interior & exterior walls

Interior & exterior floors

Swimming pools & basins (small tiles)

Underfloor heating (encapsulated)

Tile on tile (well-bonded existing tiles)

Gypsum & anhydrite (prime first)

Painted walls (paint firmly anchored)

Not suitable for

Moisture-sensitive natural stone

Tiles larger than 600×600mm

Walls or floors subject to deflection or vibration

Precoat or poured concrete walls

Metal surfaces

Bed depths exceeding 5mm

Adesilex P9 vs Mapeker Rapid Set Flex — which do you need?

Adesilex P9 (this product)

30-minute open time — relaxed working pace

8+ hour pot life — mix once, work all day

Available in grey and white

Swimming pools & basins

EMICODE EC1 Plus — very low emission

Floors ready 24 hrs (not rapid)

Mapeker Rapid Set Flex

10-minute open time — work fast

20-minute pot life — mix in batches

Grey only — no white version

Not rated for swimming pools

Grout in just 2–3 hours

Light foot traffic after 3 hrs

How to mix and apply this adhesive Mixing · surface prep · setting out · fixing · grouting

Mixing & preparation

Prepare the substrate — it must be flat, sound, and free from loose parts, grease, oils, paints, and wax. Cementitious renders must cure at least 2 weeks; screeds at least 3–4 weeks.

Gypsum and anhydrite substrates must be primed with Mapei Primer G or Eco Prim T Plus before tiling.

Mix with clean water — 100 parts powder to 29–31 parts water by weight. For a 20kg sack, use approximately 5.8–6.2 litres of water. Mix until smooth and lump-free, then leave to rest for 5 minutes and re-stir before applying.

Pot life is over 8 hours — unlike rapid-set adhesives you can mix a full sack and work at a comfortable pace.

In wet rooms and bathrooms, apply a waterproofing membrane (e.g. Mapei Mapegum WPS or Mapelastic AquaDefense) before tiling. For swimming pools, back-butter all tiles.

Mark setting-out lines before mixing — a horizontal datum line and vertical centre. Dry-lay tiles to check cut sizes at both edges before committing to the mix.

If surfaces are very warm or in direct sun, dampen with water before applying adhesive to extend the open time.

Fixing & finishing

Apply a thin first layer of adhesive with the straight edge of the trowel, then immediately apply the full bed using a notched trowel to the correct depth.

Aim for 65–70% coverage for internal dry walls; 100% solid bed for floors, exterior, and wet areas. Max bed: 5mm.

Press tiles firmly into the adhesive with a slight twisting action. Open time is 30 minutes in normal conditions — unfavourable conditions (strong sun, high temperature, absorbent substrate) can reduce this significantly.

Check regularly for skin formation. If a skin has formed, remove and apply fresh adhesive — do not wet the skin, as it creates an anti-adhesive film.

Adjust tiles within 45 minutes of placing if needed. Clean surplus adhesive from tile faces and joints with a damp cloth before it dries.

Leave movement joints at all internal corners, perimeters, and at regular intervals across large areas. Seal with a Mapei sealant.

Grout walls after 4–8 hours (depending on absorbency); floors after 24 hours. Protect newly tiled surfaces from rain for 24 hours and from frost and strong sun for 5–7 days.

Swimming pools and basins can be filled after 21 days. Heavy floor loads (e.g. vehicles) — allow 28 days cure.