Floor Screeds

ARDEX floor screeds are walkable from only 3 hours, and can receive floorcoverings from as little as 4 hours.
Perfect for bonded, unbounded and floating screeds incorporating underfloor heating.

Floor Screeds

Rapid Drying, Minimum Shrinkage, Rapid Strength

With enhanced performance properties, an ARDEX Ultra Rapid Drying Screed can receive floorcoverings in as little as 4 hours, significantly shortening installation times.

As a result, our products have been specified on many time-critical projects where minimal disruption and fast turnarounds were essential;
including King’s Cross Underground Station and Selfridges Foodhall, where work was completed overnight and areas reopened to the public the following morning.

In addition, all ARDEX products perform reliably in typical UK site conditions, and offer the following fast track benefits over traditional screeds:

The screeded area can be walked on in hours, as opposed to the 7 days that traditional screeds require as per BS 8204.
Floorcoverings can be installed in as little as 4 hours, compared to the months of drying a traditional screed may require.
ARDEX Screeds will pass a BRE Screed test in as little as 6 hours, rather than 2 weeks with conventional screeds.

If you’re working on a time-critical project, go for ARDEX A 38 Ultra Rapid Drying Screed. It’s walkable in only 3 hours, receives ceramic, or stone tiles from 4 hours, and resilient floorcoverings from just 48 hours. Used for both internal and external locations.

For a quick screed that also combines good workability and economy, use ARDEX A 29. It offers outstanding performance at an economical 1-part cement to 7 parts sand mix with an extended 90 minute working time. Whilst still being fast enough to receive tiles from 24 hours, and resilient flooring from only 7 days.

For the ultimate in performance and strength, consider Knopp ULTIMATE 4 Screed Admixture. Unlike complete bagged screeds, this is a liquid additive that transforms standard sand/cement mixes on site. This innovative additive allows semi-dry sand/cement screeds to dry in as little as 4 days, while significantly increasing strength through synthetic curing. It allows reduced screed thicknesses down to 30mm and provides excellent rehydration protection. Ideal for bonded and floating screeds as well as applications with underfloor heating.

For projects requiring exceptional flow properties, ARDEX FLOWPLUS is a high performance admixture transforms standard sand/cement mixes into a liquid cement screed with exceptional flow properties. With FLOWPLUS, the liquid screed can be pumped more efficiently, reducing application time and labour costs, while maintaining excellent strength. It provides superior underfloor heating encapsulation, ensuring complete and void-free coverage around heating pipes for optimum thermal efficiency. Its exceptional flowability allows contractors to install up to 1000m² in a single day – dramatically increasing productivity on large projects.

For a bagged liquid screed, ARDEX offer ARDEX A 70 GYPFLO
Quick-drying, flowable Calcium Sulphate Screed. It drys twice as fast as standard Calcium Sulphate screeds, from as little as 14 days!

Download the latest ARDEX High-performance screed brochure here.

ARDEX Screed Comparison Table:

ARDEX Screed:	ARDEX A 38	ARDEX A 29	ARDEX A 35	ARDEX A 70 GYPFLO
*Working Time*	60 mins	90 mins	60 mins	120 mins
*Walkable From*	3 hrs	8 hrs	3 hrs	6 hrs
*Tile After*	4 hrs	24 hrs	3 hrs	14 days
*Carpet, Vinyl, Wood*	48 hrs	7 days	24 hrs	14 days
*Commission UFH*	3 days	7 days	3 days	3 days
*Bonded Depth*	15-40mm	20-40mm	15-40mm	–
*Unbonded Depth*	50mm+	50mm+	50mm+	30mm+
*Floating Domestic*	65mm+	65mm+	65mm+	35mm+
*Floating Commercial*	75mm+	75mm+	75mm+	45mm+
*Cement/Sand Ratio*	1:5	1:7	1:5	(Pre-mixed)
*Consumption per m²/mm*	0.31kg	0.27kg	0.31kg	1.8kg
*Wet Area / External Use*	Yes	Yes	No	No
*Pumpable*	Yes	Yes	Yes	Yes
*Available Pre-Blended*	Yes (ARDEX A 38 MIX)	No	Yes (ARDEX A 35 MIX)	Yes