• Gray stone patio with square pavers and small shrubs along the edge
  • Modern brick house with dark door and slate walkway bordered by hedges
  • Worker sweeping sand off brick pavement with a push broom
  • Evening street with wet cobblestones, streetlights and pedestrians in the city

 A-Joint® Flex is the flexible 2-component jointing mortar for paving on a loose sub-base, suitable for medium to heavy loads. Absorbs movement without cracking, ideal for wide joints from 8 mm. 

  • Borstel veegt zand van kasseien op straat.

    Crack-free thanks to lasting flexibility

    Moving sub-bases, temperature changes and heavy loads put traditional joints under pressure. A-Joint® Flex powered by ECCO is viscoplastic and remains flexible after curing, with elongation up to 3.86%. The joint moves with it instead of cracking, even on streets, squares and driveways used by heavy goods vehicles. Less repair work, less call-backs. 

  • Bezem op kasseien, werpt een schaduw.

    Built for heavy traffic, in an unbound construction

    A-Joint® Flex powered by ECCO combines flexibility with high strength and is suitable for medium to heavy traffic loads, both in public spaces and on private driveways. Suitable for almost all natural stone and concrete paving with a joint width from 8 mm. 

  • Werknemer spuit water op grijze kasseien met een hogedrukreiniger.

    Quick to apply, using very little water

    Sand and resin come ready-mixed together: you mix without adding water, simply apply and compact. The low water usage and short working time keep the job on site fast and tidy. At 20°C the surface can be walked on after 24 hours and driven on after 3 days, so your project can be back in use quickly.

The benefits of A-Joint® Flex powered by ECCO

  • Frost- and de-icing salt-resistant, water-permeable and weed-resistant
  • Prevents cracking due to lasting flexibility after curing
  • Suitable for medium to heavy traffic loads
  • Simple and quick installation, without water in the mix
  • Quickly walkable (after 24 hours) and driveable (after 3 days) at 20°C
  • Suitable for almost all natural stone and concrete paving with joints from 8 mm onwards
Gloved hand lifting a tile from a bucket of grout on a paved surface
Calculator

A-Joint® product calculator

Calculate how much A-Joint® Flex powered by ECCO you need

Do you want to use A-Joint® Flex powered by ECCO in your project, but don’t want to be left with surplus or have to order extra? Calculate exactly how much you need in advance with this handy product calculator.


 

Calculate your quantity
Finishing

Available in 3 colours

  • Close-up van ruwe beige steen- of betonnen textuur met kleine spikkels

    Neutral

  • Grijs gespikkeld granieten oppervlak, close-up.

    Stone grey

  • Donkere, korrelige textuur met grijze spikkels, als asfalt in close-up.

    Basalt

Applications

What do I use A-Joint® Flex powered by ECCO for?

A-Joint® Flex powered by ECCO is the flexible 2-component jointing mortar that remains permanently flexible after curing and can handle heavy traffic. You use it for paving in a unbound construction with medium to heavy traffic loads.

  • Streets and access roads for lorry traffic
  • Public spaces and squares
  • Commercial and industrial zones
  • Driveways and patios

Suitable for almost all natural stone and concrete paving, with joints from 8 mm.

  • Broom sweeps sand over cobblestones outside.
  • Evening city square with wet cobblestones, street lamps and illuminated façades
  • Close-up van grijze kasseibestrating met wazig groen op de achtergrond
  • Close-up of grey stone paving tiles

Technical specifications A-Joint® Flex powered by ECCO

The technical specifications of A-Joint® Flex powered by ECCO are guideline values based on laboratory and practical experience. The values serve as a reference; actual performance depends on the substrate and application. Due to the high flexibility, compressive strength has intentionally not been determined as an absolute value.

Download the technical data sheet
Property Value
System 2-component jointing mortar
Add width From 8 mm
Insertion depth From 30 mm
Tax Moderate to heavy traffic congestion
Processing temperature > 0°C and 30°C
Processing time at 20°C Approx. 20–30 minutes
Load capacity at 20°C Walkable after 24 hours, driveable after 3 days
Delivery method Sandbag of 20 kg + 3 kg of resin
Shelf life Store for 24 months in a dry, frost-free place; protect from direct sunlight.
Compressive strength Due to the high flexibility, not defined as an absolute value.
Flexural strength 2.4 N/mm²
Static modulus of elasticity 900 N/mm²
Density of cured mortar 1.52 kg/dm³
Water permeability 2.786 × 10⁻³ m/s (at 10% void volume approx. 4.72 l/m²/min, depending on compaction)
faq

Frequently Asked Questions

A-Joint product line

The A-Joint® gamma

For private terraces, pedestrian zones and public roads: the A-Joint® range offers a stable, water-permeable joint for every application.

  • Empty parking spaces with grey brick paving and white lines

    A-Joint® Polysand Pro powered by ECCO

    Dry sweep-in jointing sand for very narrow joints from 1 mm.
  • Winding cobblestone path through green grass

    A-Joint® Pro powered by ECCO

    2-component jointing mortar with high fluidity for both narrow and wide joints.
  • Light beige patio tiles with a border of greenery and purple shrubs in the garden

    A-Joint® Ready Flex powered by ECCO

    Ready-to-use adhesive mortar for ceramic tiles and large formats, permanently flexible.

  • A-Joint® Ready powered by ECCO

    Ready-mixed jointing mortar for patios, garden paths and driveways around the home.
  • Street with a zebra crossing and pavement between tall buildings, sun and shade

    A-Joint® Repair powered by ECCO

    2-component repair mortar for washed-out and crumbling joints.
  • White arched bridge with cobblestones over a canal, brick buildings in the background.

    A-Joint® Traffic powered by ECCO

    2-component jointing mortar for public roads and squares, resistant to street sweepers, frost and de-icing salt.
  • Curved driveway with grey pavers, grass and a flower bed along a house

    A-Joint® Ready Pro powered by ECCO

    Ready-to-use all-purpose jointing mortar for medium-duty traffic up to 7.5 tonnes and joints from 3 mm.