ARDEX JK - Especial piscinas

ARDEX JK - Quick mortar for tile joints in swimming pools

Quick tile grout for swimming pool tile joints. For sealing tile joints from 1 to 8mm. Specially for swimming pools. Passable in 90 minutes. White colour. Complies with EN 13888 CG2. For grouting or grouting tiles and screeds.

Packaging format
Tax excluded


     Marcado CE

Quick mortar for grouting tiles in swimming pools. Solutions for sealing joints from 1 to 8mm. Special grout for swimming pool construction. Can be walked on in 90 minutes. White colour. Complies with EN 13888 CG2. For sealing tile joints, grouting or grouting of tiling and screeds.

Field of application:

Indoors and outdoors. For grouting floor and wall substrates.

Especially for grouting swimming pools.

For grouting all types of ceramic, vitreous and natural stone, bricks, slabs...

Ideal for working in conjunction with tile adhesive mortar or swimming pool tile adhesive cement in high quality applications and laying.

Product description:

Cement based powder, fast setting and special additives.

Maximum particle size 0.25 mm.

When mixed with water, a soft, pasty mortar with high workability is obtained.

The mortar has a fast setting time, is non-flammable, adheres strongly and without cracks.

Joints are quickly workable.

Instructions for use:

Clean water is poured into a mixing vessel and the powder is mixed into ARDEX JK mortar until a lump-free, homogeneous, pasty mortar is obtained.

Mixing ratio:

25 kg ARDEX JK: approx. 5 L water.

At a temperature of approx. 20°C, the mortar can be worked for approx. 30 minutes. Higher temperatures shorten the working time and lower temperatures lengthen it.

With a grouting spatula it is easy to push the mortar into the joints. Even the deepest joints can be filled in a single pass. The fast setting time allows for early washing out, without water washing out the joints.

ARDEX JK should be worked at temperatures above +5° C.


In the case of porous surfaces or matt tile glazes, grout residues may stick. Therefore, grout tests on such surfaces cannot be dispensed with.

Subfloor moisture and differences in the absorption power of the tile edges can cause differences in the colour of the grout joints.

In case of doubt, it is recommended to carry out preliminary test work.

ARDEX WA epoxy resin mortar is recommended for use in medical baths, thermal baths, public swimming pools and other buildings subject to high stresses.

For grouting moisture-sensitive natural stone carved slabs, ARDEX MG marble grout should be used in interiors.


Contains cement. Irritating to skin. Danger of serious eye damage.

Keep out of reach of children. Avoid contact with eyes and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective gloves. Once set, the product is physiologically and ecologically harmless.

GISCODE ZP1 = product with low chromate cement content.

Technical data

Mixing ratio approx. 5 litres of water per 25 kg of powder Approx. 1 vol. of water : 4 vol. of powder 

Density approx. 1.3 kg/litre

Density of fresh mortar Approx. 2,1 kg/l


with a joint width of 3 mm, joint depth of 5 mm for tiles or average mosaics of 30 x 30 cm. Approx. 0.20 kg/m² of 15 x 15 cm. Approx. 0,20 Kg/m² of 10 x 10 cm. Approx. 0,20 Kg/m² of 5 x 5 cm. Approx. 0.20 kg/m² of 5 x 5 cm.

Additional losses due to excess material on the tiles are 0.05 - 0.10 Kg/m² depending on the nature of the surface and the way of working.

Brinell hardness After:

1 day, approx. 40 N/mm².

3 days approx. 60 N/mm².

7 days approx. 80 N/mm²

28 days approx. 100 N/mm².

Usage time (20ºC): approx. 30 min.

Walkability (20ºC): after approx. 90 min.

Suitable for underfloor heating: Yes

Packaging: 25 kg bags net.

Storage: Approx. 12 months in dry place in closed original packaging.

Product Details

Cementitious Joints
Indoor and outdoor
Single component
Swimming pools
Normative UNE
UNE 13888 CG2
Drying time
Minimum joint thickness
1 mm
Maximum joint thickness
8 mm


Reviews (0)

No reviews

Related products

Customers who bought this product also bought:

Customers who bought this product also bought:

Product added to wishlist
Product added to compare.