Mapei Ultraflex S2 Quick Grey 15kg - High-Performance Rapid Setting Flexible Tile Adhesive
Mapei Ultraflex S2 Quick Grey 15kg - High-Performance Rapid Setting Flexible Tile Adhesive
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| 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 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 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 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 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 Respect bed depth: Maximum bed thickness is 10mm.
- 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?
Is it suitable for large format porcelain?
Can I use it over underfloor heating?
What’s the mix ratio and working time?
What surfaces should I avoid?
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
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
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.