
ARDEX UK has launched a complete same-day industrial flooring system, pairing ARDEX K 71 Rapid Drying Industrial Topping and Wearing Surface with the new ARDEX PU 30 Polyurethane Primer and Moisture Barrier. Together they give flooring contractors a primed, levelled, walkable industrial floor within a single shift — without the mixing, pot life and waiting time that comes with two-part resin primers.
ARDEX PU 30 is a one-part polyurethane primer that is ready to use straight from the tub — no mixing, no measuring and no waste — and is dry and walkable from just 60 minutes. It also acts as a moisture barrier on damp substrates, controlling residual construction moisture with one coat to 90% RH or two coats to 98% RH, and encapsulates problematic lignite so the topping bonds to a sound surface.
ARDEX K 71 completes the system: a rapid drying industrial topping and wearing surface, pump or hand applied from 3–30mm neat or up to 50mm with aggregate, achieving AR0.5 abrasion resistance suitable for heavy wheeled traffic. The floor takes foot traffic from 2 hours and can receive resin coatings from 12 hours — keeping programmes moving in warehousing, manufacturing and logistics environments where downtime costs money.
How the system works
Prime
1-part ARDEX PU 30 is dry and walkable from 60 minutes.
Level
Pump or hand apply ARDEX K 71 from 3–30mm neat.
Walk
Walk on from 2 hours. (Apply resins/coatings from 12 hours).
Speed meets convenience meets economy

Easier..
No two-part resin to mix, no short pot life to work against, nothing to discard at the end of the day. PU 30 is ready to use straight from the tub.
No mixing, no measuring, no waste, and walkable in 60 minutes.

Smarter..
Damp substrate? ARDEX PU 30 also controls residual construction moisture — one coat to 90% RH, two coats to 98% RH. (Above an existing effective structural DPM).
Plus it encapsulates problematic lignite, so the topping bonds to a sound surface.

Economical..
The cost of a two-part epoxy isn’t just the tub. It’s the mixing time on every unit, the hours spent waiting before the topping can go down, and the leftover resin that has to be thrown away.
PU 30 has none of those. Use straight from the tub, and resealable for the next job.
The System
ARDEX PU 30 + ARDEX K 71

ARDEX PU 30
- Ready to use — no mixing, no waste
- Walkable in 60 minutes
- Moisture barrier to 98% RH
- EC1 PLUS · solvent free · handles lignite

ARDEX K 71
- 3–30mm neat, to 50mm aggregated
- AR0.5 — suitable for heavy wheeled traffic
- Walk on from 2 hours, coat from 12
- A1 fire rating · pump applied
The system build-up

Primer coats by residual moisture
| Residual moisture (RH) | PU 30 + Fine Aggregate | PU 30 + P 7 |
|---|---|---|
| < 75% RH | ×1 + blind | ×1 PU 30 + ×1 P 7 |
| 75 – 90% RH | ×2 + blind | ×1 PU 30 + ×1 P 7 |
| 90 – 98% RH | ×3 + blind | ×2 PU 30 + ×1 P 7 |
Always refer to the current technical datasheets before installation.
Application areas







10 Year Full System Warranty
(T&Cs apply: ardex.co.uk/ardex-group-warranty)
Points on every purchase;
sign up free at ardex.co.uk/givbax

See the system on your next project
Talk to your ARDEX Area Sales Manager to find out more, or locate your nearest stockist.
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