ARDEX A 35 Ultra Rapid Drying Screed Cement

ARDEX A 35 is a special cement used in place of Portland Cement in cement:sand screeds for producing a rapid setting and drying floor screed that can be used as a bonded screed, an unbonded floor screed laid onto a membrane, or a floating screed laid onto compressive quilt or insulation material. It will be dry after 24 hours at 20°C to receive floor finishes, regardless of thickness.

Screed thickness:

The following thicknesses are recommended for screeds using ARDEX A 35:

  • Bonded screeds: Minimum 15 mm (design thickness up to 40 mm).
  • Unbonded screeds: Minimum 50 mm.
  • Floating screeds: Minimum 75 mm (minimum 65 mm in lightly loaded (domestic) locations).

Mix proportions:

  • Heavy duty: A 1:4 mix is recommended where a very heavy duty floor is required.
  • Standard: A 1:5 mix is recommended for all normal screeding situations.

General information


Walkable in 3 hours; Receives ceramic and natural stone tiles directly after 24 hours; Install carpet, wood and vinyl floorcoverings after 24 hours, or just, 4 hours for carpet and vinyl when smoothed with ARDEX A 55; Passes BRE Screed (ISCR) Testing after 6 hours; After just one day, achieves the acceptable minimum compressive and tensile bending strengths attained by an ordinary cement screed after 28 days; For bonded, unbonded and floating screeds; Can be used with underfloor heating systems; Can be pumped for fast application



Uniclass 2015

Pr_35_31_06_69 Quick-drying levelling screed mixesPrimary


M10/115 Cement:sand levelling screeds

M10/130 Proprietary quick drying levelling screeds

M10/4 Cement:sand levelling screeds

M10/7 Proprietary quick drying levelling screeds

M40/20 Existing backgrounds/ bases generally

M40/320 Existing concrete/ screeds

Specification data - Quick-drying levelling screed mixes

Product Reference

ARDEX A 35 Ultra Rapid Drying Cement for Internal Screeds

Digital objects
Platform Compatible Version Certified to

Revit 2016




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