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Ardex A38 Ultra Rapid Drying Cement for Screeds – 25kg

Brand: ARDEX
Product Code: 18275
In Stock

ARDEX A 38 produces ultra-rapid drying floor screeds which can be walked on after just 3 hours, and have floorcoverings installed in as little as 4 hours, regardless of thickness.

£57.64 incl. VAT
£48.03 excl. VAT

Qty:

ARDEX A 38 has been specially formulated to produce ultra-rapid drying floor screeds for internal and external locations.

With ‘RAPIDRY PLUS FORMULA’ Technology, an ARDEX A 38 screed can be walked on just 3 hours after application and ceramic and natural stone tiles can be installed after just 4 hours irrespective of thickness, making it ideal for fast track tiling projects.

Resilient floorcoverings such as carpet, vinyl and wood can be installed after 48 hours irrespective of thickness.

Features:

  • Walkable in 3 hours
  • Receives ceramic and natural stone tiles directly after only 4 hours
  • Install resilient floorcoverings after 48 hours
  • Passes BRE In-Situ Crushing Resistance (ISCR) Testing after just 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

Uses:

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.

Coverage:

Using the recommended 1:5 mix, material requirement is approximately 0.31kg of ARDEX A 38 cement per m² per millimetre of screed thickness i.e. approximately 3.2m² at 25mm thick or 5.4m² at 15mm thick per bag.

Packaging:

ARDEX A 38 is packed in paper sacks incorporating a polyethylene liner – net weight 25kg.

TECHNICAL DATA
Pack size 25 kg
Weight of fresh mortar approx. 2kg/litre
Working time at 20°C approx. 1 hour
Walkability at 20°C approx. 3 hours
COMPRESSIVE STRENGTH USING 0-8MM GRADED AGGREGATE
After 1 day 25.0 N/mm²
After 7 days 40.0 N/mm²
After 28 days 45.0 N/mm²
TENSILE BENDING STRENGTH (1:5)
After 1 day 4.0 N/mm²
After 7 days 4.5 N/mm²
After 28 days 5.5 N/mm²
SOUNDNESS ISCR (BRE SCREED TEST)
Annex D and E of BS 8204-1 contains advice on the use of the In-Situ Crushing Resistance (ISCR) Test on bonded, unbonded and floating screeds. The installed ARDEX A 38 can normally be tested after 6 hours using the ISCR BRE screed tester, if required. The depth of an indentation of a correctly mixed and compacted screed should comply with the requirements of the floor finish and category of use.
MOISTURE TESTING
Should the moisture need to be determined, the specific properties and composition of an ARDEX A 38 screed mean that the moisture content cannot be determined with electric conductivity or hygrometer methods and instead the Speedy Moisture Tester (Carbide Method) must be used. The DIN standard for testing cementitious floor screeds (DIN 18121-2) is to use the CM (Carbide Method) when laying moisture sensitive floorcoverings and a reading of † 2% needs to be achieved. Please consult ARDEX Technical Support Team for further advice.
British Standard Codes of Practice
BS 8204: Part 1. In situ Floorings – Bases and Screeds.
BS 5385: Part 3. Appendix C. Ceramic Floor Tiling and Mosaics.
BS 8000: Part 9. Code of Practice for cement/sand floor screeds and concrete floor toppings (Workmanship on building sites).

Please see our Delivery policy page for full details of our delivery terms and conditions, including information on exclusions, geographical restrictions, third parties, and failed deliveries.

Delivery Timescales

We will endeavour to deliver all orders within 1-3 working days (subject to geographical restrictions). Please note, where delivery lead-times for individual orders may be subject to change, we will keep you informed directly by phone or email within 24 hours of your order being placed.

Deliveries will not be made on UK bank holidays, and in such cases will fall on the next working day.

Standard delivery hours are between 8am and 6pm, Monday to Friday. If you are not available to accept the delivery when it is attempted, then a failed delivery charge will be applied (see the Delivery page for full details).

Delivery Communications

We aim to dispatch and deliver all our products within their specified time frames. You will get notified by BaseTec via email when your products have been dispatched. This will include details of your order and the expected delivery time. BaseTec will contact you via email or phone if there are any delays in picking your order or after dispatch.

If any products are out of stock or unavailable at the time of ordering, the BaseTec team will contact you by phone or email to discuss your options.

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