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Ardex A 18 Screed Bonding Cement with Colour Indicator
Ardex A 18 Screed Bonding Cement with Colour Indicator
Ardex A 18 Screed Bonding Cement with Colour Indicator

Ardex A18 Screed Bonding Cement with Colour Indicator

30584
ARD11412

Ardex A18 is a bonding cement for producing bonding slurries for application over concrete and cement/sand screeds, suitable for internal and external use, including swimming pools. Changes colour as it dries, indicating if it remains open to receive the Ardex Screed Cement.

  • Can also be used for joining daywork joints when a new bay is laid against a set and hardened screed, including screeds with underfloor heating systems.
  • Produces a slurry ideal for bonding Ardex Screed Cements
  • High adhesion strength maximises the bond between the screed and the substrate
  • Colour change reduces the risk of the application of screeds in to dry bonding slurries
  • 60 minute pot life
  • 15 minute open time
Size
£47.45(incl. VAT)
£39.54(ex. VAT)
Quantity
Please choose your colour
Available for Delivery (See Delivery Options Below)

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Description

Ardex A 18 is a green powder with aggregates and specially formulated additives which, when mixed with water, produces a slurry ideal for bonding Ardex Screed Cements.

The bonding slurry changes colour as it dries, indicating if it remains open to receive the Ardex Screed Cement.



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Pack Contents


Packed in paper sacks incorporating a polyethylene liner - net weight 25kg.



Surface Preparation


The substrate may be dry or damp (with no surface water) but must be rigid, clean and free of dust, grease and other barriers to adhesion. The use of Ardex DGR Degreaser is recommended for the removal of oils, waxes and any other barriers to adhesion, from the substrate.

Concrete surfaces must be prepared using suitable mechanised equipment to expose the coarse aggregate and to remove all barriers to adhesion. All surface coatings must be removed prior to application.



Mixing


Add the Ardex A 18 powder to clean water in a clean container, whilst stirring and mixing thoroughly to give a smooth, lump-free paste. The use of an Ardex mixing paddle with a 10mm chuck variable speed electric drill makes light work of mixing.

The mixing proportions by volume are:

  • 3 parts Ardex A 18 powder to 1 part water.

A 25kg bag of Ardex A 18 powder requires approximately 5.75 litres of water.

The mixed Ardex A 18 slurry has a working time of approximately 60 minutes. Once the mortar starts to stiffen/set, do not add additional water to the mix.



Application


Apply Ardex A 18 to the substrate with a brush to a minimum thickness of 1.5mm.

The screed cement must then be placed and compacted ‘fresh in fresh’ whilst the bonding slurry is still wet and workable; this is indicated by a dark green colour. After approximately 15 minutes the colour changes to light green, indicating the slurry has dried and an additional application will be required.

Apply Ardex A 18 at temperatures above 5°C.

Note: Screeds should be applied in accordance with BS 8204: Part 1 or BS 5385: Part 3.



Product Details
11414-1007757

Data sheet

For Use By
Professional Use
Interior / Exterior Use
Interior Use
Single, Two or Three Pack
Single
Coverage
1.5kg of powder per m² per mm application thickness
Tensile Strength
After 1 day: approx. 2 N/mm²
After 7 days: approx. 3 N/mm²
After 28 days: approx. 7 N/mm²
Min. Application Temperature
5°C
Compressive Strength
After 1 day: approx. 8 N/mm²
After 7 days: approx. 13 N/mm²
After 28 days: approx. 26 N/mm²
Base Type
Cement
Working Time
60 minutes
Suitable For Use On
Concrete Floor Screeds
Suitable For Use On
Sand and Cement Floors
Application Method
Tamper
Usages
Underfloor Heating
Usages
Colour-Changing
Attachments
Download


Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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IMPORTANT SHIPPING & DELIVERY INFORMATION

Ardex A18 Screed Bonding Cement with Colour Indicator is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT