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ARDEX A 38 Ultra Rapid Drying Screed Cement

ARDEX A 38 Ultra Rapid Drying Screed Cement

Ardex Ltd – Flooring, Tiling & Screeding products Third party certifications:
  • Environmental Product Declaration (EPD) - IBU

    Environmental Product Declaration (EPD) - IBU

    Certificate type

Produces ultra-rapid drying floor screed which can be walked on after just 3 hours, and have floorcoverings installed in as little as 4 hours, regardless of thickness.

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+44 (0)1440 714939 ardex.co.uk

Application

ARDEX A 38 is used to produce bonded, unbonded and floating screeds for internal and external locations, including wet areas such as swimming pools. It can also be used for large repairs to existing cement/ sand screeds. It is ideal for situations where early foot traffic and rapid hardening is required.

Description

A special cement for producing a rapid setting, hardening and drying floor screed. Can be used to produce a bonded screed, an unbonded floor screed laid onto a membrane, or a floating floor screed laid onto a compressive quilt/ insulating material.


Features and benefits:

  • Rapid hardening – walkable in three hours.
  • Receives ceramic and natural stone tiles directly after only four hours for bonded, unbonded and floating screeds.
  • Install resilient, wood finishes and vinyl floor coverings after 48 hours.
  • After only one day the compressive and tensile bending strengths of ARDEX A 38 exceeds the acceptable minimum attained by an ordinary cement screed after 28 days.
  • Can be used with underfloor heating systems.
  • Can be pumped for fast application.
  • Walkable in 3 hours, and receives tiling from 4 hours.
  • Compressive strength: After one day: 25.0 N/mm², After seven days: 40.0 N/mm², After 28 days: 45.0 N/mm².
  • Tensile bending strength: After one day: 4.0 N/mm², After seven days: 4.5 N/mm², After 28 days: 5.5 N/mm².


Thickness:

ARDEX A 38 should be applied at the following thicknesses for normal cement/ sand screeds:

  • Minimum 15 mm (design thickness up to 40 mm) for bonded screeds.
  • Minimum 50 mm for unbonded screeds.
  • Minimum 75 mm for floating screeds (65 mm in lightly loaded (domestic) locations).

General information

Color

Grey

Finish

Smooth

Material

Cement

Shape

Formless

Height

Recommended thickness for type of screed needed:


Bonded: 15-40mm

Unbonded: 50mm+

Floating Domestic: 65mm+

Floating Commercial: 75mm+

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Uniclass

Pr_35_31_06_69 Quick-drying levelling screed mixesPrimary
Pr_35_31_06_77 Screed flooring

CAWS

M42/220 Concrete/ screed substrates

M42/30 Concrete/ Screed substrates

M10/115 Cement:sand levelling screeds

M10/130 Proprietary quick drying levelling screeds

M10/110 Bonded cement:sand levelling screeds

M10/4 Cement:sand levelling screeds

Product range

Floor Screeds
Swimming Pool Floor and Wall Build-Up / Screed and Render

Specification data - Quick-drying levelling screed mixes Enhanced data

Fine aggregate

0–8 mm screed sand.

Recommended by BS 8204-1:2003, classified to BS EN 13139 standards.

Admixture

Not permitted.

Mix

1:5.

Cement:Aggregate

Compressive strength - 28 days

40.0 N/mm².

TensileStrength

5.5 N/mm².

Bonded

15–40 mm.

Unbonded

50 mm.

Floating floor

75 mm.

Commercial applications.

65 mm.

In lightly loaded/domestic locations.

Drying time

  • Three hours: Walkable.
  • Four hours: Receives ceramic and natural stone tiles.
  • 48 hours: Resilient floorcoverings regardless of thickness.

3–48 mm.

Tile after just four hours, regardless of thickness. Install carpet, wood and vinyl floorcoverings after 48 hours.

Environmental information

Country of product manufacture

United Kingdom

Digital objects

Platform Compatible Version Certified to
Revit

Revit 2016

2

2.0
IFC
-

2

2.0
Download now from NBS National BIM Library

Literature

ARDEX Fast Track Floor Screed Brochure

ARDEX Fast Track Floor Screed Brochure

ARDEX Datasheets Booklet

ARDEX Datasheets Booklet

ARDEX RIBA CPD Seminar Brochure

ARDEX RIBA CPD Seminar Brochure

ARDEX Screed Thickness Guide

ARDEX Screed Thickness Guide

ARDEX Screed Drying Times

ARDEX Screed Drying Times

Case studies

Tottenham Court Road Underground Station - London

Tottenham Court Road Underground Station - London

Selfridges Food Hall - London

Selfridges Food Hall - London

Victoria and Albert Museum - London

Victoria and Albert Museum - London

DAVID LLOYD LEISURE CLUB

DAVID LLOYD LEISURE CLUB

RANSOMES DOCK APARTMENTS - LONDON

RANSOMES DOCK APARTMENTS - LONDON

It’s a ‘race to the finish,’ as ARDEX UK complete Commonwealth Games Pool refurbishment in 8 weeks

It’s a ‘race to the finish,’ as ARDEX UK complete Commonwealth Games Pool refurbishment in 8 weeks

Tollcross International Swimming Centre

Tollcross International Swimming Centre

Thames Lido

Thames Lido

Third party certifications

Environmental Product Declaration (EPD) - IBU

ARDEX A 38 Environmental Product Declaration (EPD)

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