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A-JOINT POLYSAND PRO

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A-JOINT®POLYSAND PRO is a water-permeable special joint sand
with weed-inhibiting effect for very narrow joints. It is characterised
by its simple and quick application and is ideally suited for the
professional and the hobby craftsman.

Due to its fine grading curve, A-JOINT®POLYSAND PRO is particularly suitable for narrowly laid interlocking pavers on private terraces and public roads and paths. The jointing sand remains permanently flexible and is therefore ideally suited for unbound construction on new and renovated surfaces.

A-JOINT®POLYSAND PRO is low in dust, leaves no binder film on the stone surface and is therefore also suitable for jointing coated and sensitive pavements.

VARIANTE

Neutral
Basalt
Stone grey
Stable and flexible joint filling
Prevents sanding out of the joints
Ready-mixed and virtually dust-free
For very narrow joint widths from 1–5 mm
For joint depths from 30 mm or 2/3 of the stone height
Can be used from 5°C floor temperature
Rainproof and walkable after 3 hours
For coated and sensitive coverings
System
Weed-inhibiting special joint sand
Working time at 20°C
unlimited
Working temperature
> 5°C with dry substrate
Release of the surface at 20°C
Can be walked on after 3 hours, can be driven on after 3 days
Delivery form
25 kg PCR bucket or 1.000 kg big bag
Shelf life
Bucket goods: 24 months, Big Bag: 6 months. Dry and protect from direct sunlight
Strength
ca. 60 A (according to Shore, according to DIN 53505)
Flexural strength
ca. 5 N/mm²
Static modulus of elasticity
ca. 2000 N/mm²
Density
ca. 1,6-1,7 kg/dm³
Water permeability
10-5to 10-6m/s (at 10 % joint content approx.5 l/m²/min depending on compaction)

Calculator for this product

  1. 1

    Content pouring

    Content pouring
  2. 2

    Filling the joints

    Filling the joints
  3. 3

    Clean the stone surface

    Clean the stone surface
  4. 4

    Professional advice

    Professional advice
  5. 5

    Activate the binder

    Activate the binder

Processing instructions

Prepare:

The joints must be cleaned of weeds, roots and loose parts to a depth of at least 30 mm (2/3 of
the stone height for traffic load) without leaving any residue. The surface to be grouted must be
freed from all dirt. As moisture activates the binder prematurely, the stone surface must be
completely dry before and during application. Residual moisture can be dried e.g. with a gas burner
or compressed air. To avoid settling and loose stones, we recommend a permanently water
permeable and load-bearing substrate corresponding to the subsequent load (pay attention to the
current standards and guidelines).

Filling the joints:

Open the bucket and spread the contents over the dry surface. Now sweep the joint sand carefully
and intensively into the joints with a broom. The joints must be completely filled. Clean the stone
surface carefully with a fine broom until there is no more residue on the stone surface. Make sure
that chamfers (bevelling of the side edges) on slabs and pavers must be exposed.

Profi-Tip:

If your covering is suitable for the use of a small vibrating plate (with protective mat if necessary),
we recommend additionally vibrating the surface. Then refill the sagged joints again. Repeat the
process if necessary.

Activate binder:

Now spray the entire surface with a fine jet of water (adjustable nozzle). Avoid foaming of the
binder by applying too much water pressure. Repeat this process several times until the joints are
completely saturated and can no longer absorb water. Prevent the joint material from being washed
out and puddles and rivulets from forming.

After-treatment:

At temperatures around 20°C, the surface can be walked on after 3 hours and driven on after
3 days. Complete curing requires complete drying of the joint. Settlement cracks and defects can
be repaired without great effort.

Application notes:
Use A-JOINT®POLYSAND PRO only with a permanently water-permeable substructure or a slope of at
least 2%. Do not use in permanently wet areas or in cases of waterlogging. Use in outdoor areas is
recommended. Cleaning with a high-pressure cleaner (max. 80 bar) should only be carried out at a distance
of at least 40 cm. The grouting may show signs of wear or defects. These can be repaired with little effort
even after years.

Regularly remove dirt, leaves and moss from the joint surface.

All fillers are natural products and are subject to natural colour variations. Our information is based on
years of experience and the current state of the art, but is non-binding and does not constitute a contractual
legal relationship.

 

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