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ARDEX A 29 Rapid Drying Floor Screed

ARDEX A 29 Rapid Drying Floor Screed

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

    Environmental Product Declaration (EPD) - IBU

    Certificate type

  • EC1plus

    EC1plus

    Certificate type

Floor screed that combines excellent workability, speed and performance.

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

Application

ARDEX A 29 is used to produce bonded, unbonded and floating screeds in internal or external locations. A 1:7 mix is suitable for most normal screeding situations. An ARDEX A 29 Screed passes the BRE Screed (ISCR) after 24 hours (tested on 50 mm unbonded at 20°C).

Description

Cement for screeds that has been developed to perform in real site conditions. Offering application and performance benefits to professional screeding contractors, it combines excellent workability, speed and performance.


The working time of the mixed mortar is approximately 90 minutes at 20°C, therefore mixing, placing, compaction and trowelling off must proceed without delay. The amount of mortar mixed and the area to be screeded should be limited so that trowelling off and finishing can be completed within the working time.


Where a new bay is laid against a set and hardened screed it is recommended that such daywork joints are vertical and treated with the grouting slurry and may be tied together with steel reinforcement. Apply at temperatures of 5°C and rising.


Application on a floor heating system: When laid on a hot water floor system, seven days should be allowed to elapse before heating the water up to a temperature of 25°C and maintained for a further three days. The maximum floor temperature should then be used and maintained for a further four days. In doing so draughts must be avoided. The floor should then be allowed to cool down to room temperature (above 15°C) before laying floorcoverings.


For fixing ceramic tiles and quarry tiles, etc., the screed should be finished with a wood float. Prior to laying thin floorcoverings e.g. vinyl sheet, a very smooth surface may be obtained using and ARDEX Levelling and Smoothing Compound, which should be selected with the final floor finish in mind. Please refer to the relevant ARDEX Technical Datasheet for further information.


A 1:7 mix is suitable for most normal screeding situations. The product passes the BRE Screed (ISCR) after 24 hours (tested on 50 mm unbonded at 20°C). It should be applied at the conventional thicknesses for normal cement/sand screeds i.e. minimum 20 mm at 1:5 ratio and minimum 25 mm at 1:7 ratio, (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.


Features and benefits:

  • 90-minute working time (at 20°C).
  • Walkable after eight hours (at 20°C).
  • Install ceramic tiles after 24 hours and natural stone after seven days.
  • Install resilient and wood floor finishes after seven days.
  • Apply as a bonded, unbonded or floating screed.
  • BRE Screed (ISCR) Test: Pass in 24 hours.
  • Rapid hardening.

General information

Color

Grey

Finish

Smooth

Material

Cement

Shape

Formless

Size

Recommended thickness for type of screed needed:


Bonded: 20-40mm

Unbonded: 50mm+

Floating Domestic: 65mm+

Floating Commercial: 75mm+

Length

Bespoke

Width

Bespoke

Height

ARDEX A 29 should be applied at the conventional thicknesses for normal cement/sand screeds i.e. Minimum 20mm at 1:5 ratio and minimum 25mm at 1:7 ratio, (design thickness up to 40mm) for bonded screeds. Minimum 50mm for unbonded screeds. Minimum 75mm for floating screeds. 65mm in lightly loaded (domestic) locations.

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Uniclass

Pr_35_31_06_69 Quick-drying levelling screed mixesPrimary

CAWS

M10/115 Cement:sand levelling screeds

M10/110 Bonded cement:sand levelling screeds

M10/4 Cement:sand levelling screeds

Product range

Floor Screeds

Specification data - Quick-drying levelling screed mixes Enhanced data

Cement

Portland.

Coarse aggregate

6–10 mm course aggregate.

Fine aggregate

0–8 mm screeding sand.

Admixture

Not permitted.

Mix

1:7 cement:aggregate.

Coverage

Approximately 0.27 kg cement per m² for each millimetre of screed thickness using a 1:7 mix.

CompressiveStrength

After 28 days (1:7 mix): 30 N/mm². After 28 days (1:5 mix): 40 N/mm².

Environmental information

Country of product manufacture

United Kingdom

Digital objects

Platform Compatible Version Certified to
Revit
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1

2.1
IFC
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1

2.1
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Literature

ARDEX A 29 - Rapid Drying Cement for Internal and External Screeds

ARDEX A 29 - Rapid Drying Cement for Internal and External Screeds

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

ARDEX A 29 at Coalville Leisure Centre

ARDEX A 29 at Coalville Leisure Centre

Third party certifications

Environmental Product Declaration (EPD) - IBU

ARDEX A 29 Environmental Product Declaration (EPD)

EC1plus

ARDEX A 29 Emicode

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