Environmental Product Declaration (EPD) - IBU
Floor screed that combines excellent workability, speed and performance.
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).
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:
Recommended thickness for type of screed needed:
Floating Domestic: 65mm+
Floating Commercial: 75mm+
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.
M10/115 Cement:sand levelling screeds
M10/110 Bonded cement:sand levelling screeds
M10/4 Cement:sand levelling screeds
6–10 mm course aggregate.
0–8 mm screeding sand.
Approximately 0.27 kg cement per m² for each millimetre of screed thickness using a 1:7 mix.
After 28 days (1:7 mix): 30 N/mm². After 28 days (1:5 mix): 40 N/mm².
Country of product manufacture