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Mapei

Mapei Ultraflex S2 Quick Grey 15kg - High-Performance Rapid Setting Flexible Tile Adhesive

In Stock Next Day Delivery | Order Before 12 PM | Subject to Stock Availability

£54.10
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Next working day delivery Order before 12pm .subject to stock availability
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Next working day delivery - stocked items only Order before 12pm .subject to stock availability
Trade account pricing available Apply online for exclusive contractor & developer rates
Rated excellent on Reviews.io Trusted by homeowners and trade professionals alike
Expert technical support Speak to a product specialist before you buy.
Type Adhesive
Brand Mapei

Mapei Ultraflex S2 Quick — Fast-Setting, Highly Flexible S2 Tile Adhesive

Ultraflex S2 Quick is a one-component, high-performance, fast-setting, slip-resistant (thixotropic) S2 lightweight cementitious adhesive designed for demanding installs where you need speed + flexibility. It’s ideal for porcelain, ceramic, mosaics and non-moisture sensitive natural stone on internal and external walls and floors, including jobs where substrates may experience movement or micro-cracking.

What it’s best for

Fast turnarounds, large-format porcelain, challenging substrates, vertical installs (non-slump), and areas that need a highly deformable S2 adhesive.

Why people choose it

Quick set times, strong early grab, excellent deformability (S2), lightweight with high yield (around 30% more than conventional cementitious Mapei adhesives).

Key features

  • Fast setting for quicker grouting and earlier light foot traffic.
  • Highly deformable S2 performance to help cope with movement and micro-cracks.
  • Slip resistant / non-slump (thixotropic) — ideal for walls and large formats.
  • Lightweight, high yield (approx. 30% more yield vs traditional cementitious adhesives).
  • Suitable for internal & external walls/floors with ceramic, porcelain, mosaics and non-moisture sensitive natural stone.

Where it works best

Tiles & finishes

Porcelain, ceramic, mosaics, and non-moisture sensitive natural stone tiles (walls + floors).

Areas

Internal/external floors and walls, including high-demand installs where flexibility and quick set matter.

For wet areas and external floors, aim for full bedding (back-butter where required) to support large formats and reduce voids.

How to use

  1. 1 Prep the substrate: Ensure surfaces are sound, clean and free from dust, grease, paint and loose material. Substrates should be stable and suitable for tiling.
  2. 2 Mix: Add 15kg powder to 5.1–5.4L clean water. Mix to a smooth, lump-free paste, rest for 5 minutes, then re-mix.
  3. 3 Apply: Key in a thin contact layer with the flat edge of your trowel, then comb with a suitable notched trowel. Use a notch that achieves full coverage for your tile size and substrate.
  4. 4 Fix tiles: Press tiles firmly into place to collapse ridges. For floors, external areas and wet zones, back-butter as needed to achieve near-total coverage.
  5. 5 Respect bed depth: Maximum bed thickness is 10mm.
  6. 6 Clean up: Wash tools with water while fresh; wipe surfaces before the adhesive sets.

Important usage notes

  • • Don’t add extra water once the mix has started to set.
  • • Don’t apply directly over underfloor/undertile heating elements — heating pipes/cables should be encapsulated in a suitable screed or smoothing compound first.
  • • Not suitable on metallic, rubber, PVC or linoleum surfaces.
  • • Avoid marble/artificial composite materials that may move significantly in the presence of humidity.

Coverage & planning

Typical consumption is ~0.9 kg/m² per mm of adhesive thickness (commonly ~1.5–2.5 kg/m², depending on notch size, substrate flatness and tile format). This adhesive is designed to deliver very high yield.

Quick estimator

Approx. kg needed = Area (m²) × Thickness (mm) × 0.9.

This is a guide only — always allow for substrate variation, back-buttering, waste and tile format.

Complete the system

For best results, pair your adhesive with suitable prep, levelling, grout and sealant products:

FAQs

How quickly can I grout and walk on the floor?
Wall joints can typically be grouted after 2–3 hours. Floor joints are typically ready for grouting after 5–6 hours, and floors are usually ready for light foot traffic after 5–6 hours. Full service use is typically around 24 hours (site conditions can change timings).
Is it suitable for large format porcelain?
Yes — it’s designed for porcelain and offers a slip-resistant, non-slump consistency that helps on walls. For large formats, aim for high coverage (often with back-buttering), especially on floors, wet areas and external installations.
Can I use it over underfloor heating?
Don’t apply it directly over heating cables/pipes. The heating system should be encapsulated first using an appropriate screed or smoothing compound, then tile on top once cured and suitable for tiling.
What’s the mix ratio and working time?
Mix 15kg with 5.1–5.4L of water, rest 5 minutes, then re-mix. The mixed product has an approximate working life of ~30 minutes (site conditions affect this).
What surfaces should I avoid?
Avoid metallic, rubber, PVC and linoleum surfaces. Also avoid marble/artificial composite materials subject to significant movement in humid conditions.
Delivery & Returns

UK Mainland & Scottish Highlands only

We do not deliver to Islands, Ireland or Northern Ireland

How is shipping calculated?

Shipping is based on your order weight and delivery location. Add items to your cart and enter your postcode to see the exact cost before checkout.

Some products supplied directly from our manufacturers (non-stocked brands) carry a separate delivery charge — this is shown clearly at checkout.

Free delivery on orders £450+ inc VAT

Tiles & tiling materials only · Free samples always ship free

Next working day delivery

Order before 12:00 pm · From £6.50 + VAT · APC Overnight or DPD · Under 50 kg

Not available weekends or bank holidays

Next-day delivery is not guaranteed. Delays may occur due to carrier issues outside our control. The next-day delivery charge is non-refundable in the event of a carrier delay.

No next-day to Scotland postcodes

AB · IV · KW · PA — please allow additional working days for these regions

Pallet delivery — orders over 50 kg

Semi, half or full pallet · Palletways or K & R Mason · Next working day

Kerbside delivery only — driver cannot bring goods onto the property

Supplier direct delivery (non-stocked products)

Some brands are shipped directly from the manufacturer and carry a separate delivery charge, shown at checkout.

Genesis (trims) — £19 + VAT · 1–3 days · cut-off 11:00 am

Marmox (mosaics, shower trays) — £15 + VAT · 1–3 days

Marmox (oversized backing boards) — £65 + VAT · 1–3 days

Schluter (trims) — £20 + VAT · 1–3 days

Bihui (trims) — £15 + VAT · 1–3 days

Free sample delivery

No minimum spend · Up to 4 free samples · Next working day

Free Click & Collect

Select Click & Collect at checkout to pick up your order from our Croydon warehouse. We'll send an email confirmation once it's ready — please wait for this before visiting.

Bring your order confirmation email or order number when collecting.

If someone is collecting on your behalf, they must have the order number and the name on the order.

Mon – Fri, 8:30 am – 4:30 pm. Closed weekends & bank holidays.

Tile Experience, 108 Beddington Lane, Croydon, London, CR0 4YY

Order tracking

Email or SMS sent by the carrier once your order is dispatched

Important: Do not book a tiler or fitter until your order has arrived and been fully checked. We cannot be held responsible for unforeseen delivery delays.
Full delivery policy 0208 689 4187

Delivery Costs:

Delivery fees are calculated based on the weight of your order and your delivery location. You can use the delivery fee calculator in your basket or on the checkout page to find the exact cost.


Delivery Area:

We currently only deliver to UK Mainland and the Highlands. We do not deliver to the Islands, Ireland, or Northern Ireland.


Next Working Day Delivery (Subject to Stock Availability):

Orders placed before 12:00 pm (noon) will be delivered the next working day, excluding weekends and holidays. This service starts from £6.50 (including VAT) and the final cost is based on the weight of your order and your delivery location. You can check the exact cost in your shopping cart or on the checkout page by entering your postcode.


Cut-off Time for Genesis Products (Non-Stocked): 11:00am


Economy Service (2-3 Working Days):

This service is only available for orders over 50kg. There is no additional charge for this service.


Sample Orders:

All sample orders are shipped for free via Royal Mail Tracked 48 or 24 service. Delivery typically takes 1-3 working days.


Delivery Methods:

Non-sample orders under 50kg will be dispatched via DPD or APC Overnight. Non-sample orders over 50kg (quarter, half, and full pallets) will be dispatched via Palletways or Kandrmason (curbside delivery only).


ORDER ONLINE & COLLECT IN-STORE!

Simply place your order online and choose the Click & Collect option at checkout.
We'll email you once your order is ready for pickup at your chosen store.
Collection hours: Monday - Friday: 8:30 am to 4:30 pm


For more information, please visit our Delivery Information page.

- Please inspect your order for any damages upon delivery and notify us immediately if you find any.

- We will replace any items that are damaged during transit.

- We accept returns within 30 days of delivery.

- Please note that customers are responsible for the cost of returning items.

- We will process returns and refunds promptly once the items are received at our warehouse.


Returning Trims
Schluter Trime
Returning trims - 35% restocking fees applied.
Returnign trim with replacement - 15% restocking fees applied
Customers are responsible to arrange returning the item.
If we arrange a return colleciton, a £35 return item collection feed will be applied.


Mapei-Profilpas Trims
A 20% restocking fee will be applied. (Item must be in re-sellable condition)
The customer is responsible for returning the item.


For more information, please visit our Return & Exchange page.

30-day return window

Returns accepted within 30 days of delivery. You also have a statutory 14-day cancellation right from the date of receipt.

Items must be unused & in original packaging

Returned goods must be uninstalled, unaltered and in the same condition as received.

Installed or cut items cannot be returned

Once tiles or materials have been cut, altered or installed, no return or refund is possible under any circumstances.

How to start a return

Contact us first at info@tileexperience.co.uk or call 0208 689 4187. Send the item back with your name and order number. Return shipping is the customer's responsibility.

Refund to original payment method

Processed within 3–5 working days of us receiving and approving your return.

Original delivery charges are not refunded. If no refund after 15 business days, contact us.

Damaged or incorrect items

Report within 48 hours of receipt. Email info@tileexperience.co.uk with your order number and photos of the damage. Confirmed replacements are sent next working day at no charge.

Non-stocked brands — restocking fee may apply

Returns for Genesis, Marmox and Bihui carry up to a 20% restocking fee. Schluter trims: 35% standard return, 15% if returning with a replacement order.

Cancellations

Cancel before dispatch for a full refund including delivery. Cancel after dispatch by rejecting the delivery — refund for goods only, not the delivery charge.

Important: Do not book a tiler or fitter until your order has arrived and been fully checked. Installed tiles cannot be returned.
Full returns policy 0208 689 4187

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