• 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 a 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 substrates, temperature differences 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 with lorry traffic. Less repair, less call-back work. 

  • Bezem op kasseien, werpt een schaduw.

    Designed for heavy traffic, in an unbound structure

    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.

    Quickly applied, using very little water

    Sand and resin come ready-mixed: you mix without adding water, simply apply and compact. The low water consumption and short processing time keep work on site quick and clean. At 20°C, the surface can be walked on after 24 hours and driven on after 3 days, so your project can be put back into use quickly.

The benefits of A-Joint® Flex powered by ECCO

  • Frost- and de-icing salt-resistant, permeable to water and weed-suppressing
  • Prevents cracking thanks to lasting flexibility after curing
  • Suitable for medium to heavy traffic loads
  • Simple and quick installation, without water in the mixture
  • Quickly walkable on (after 24 hours) and drivable on (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 more? Calculate exactly how much you need in advance with this handy product calculator.


 

Calculate your quantity
Finish

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 withstand heavy traffic. You use it for paving in unbound construction with medium to heavy traffic loads.

  • Streets and access roads for HGV traffic
  • Public spaces and squares
  • Commercial and industrial areas
  • Driveways and terraces

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 of grey cobblestone pavement with blurred greenery in the background
  • 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, the compressive strength has deliberately not been determined as an absolute value.

Download the technical data sheet
Property Value
System 2-component joint mortar
Add width From 8 mm onwards
Insertion depth From 30 mm onwards
Tax Medium 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 resin
Shelf life 24 months, store in a dry, frost-free place, protect from direct sunlight
Compressive strength Due to the high flexibility, it is not defined as an absolute value.
Flexural strength 2.4 N/mm²
Static modulus of elasticity 900 N/mm²
Density of hardened mortar 1.52 kg/dm³
Water permeability 2.786 × 10⁻³ m/s (at 10% void ratio 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, 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 cobbled path through green grass

    A-Joint® Pro powered by ECCO

    2-component jointing mortar with high flowability for both narrow and wide joints.
  • Light beige patio tiles edged with green and purple shrubs in the garden

    A-Joint® Ready Flex powered by ECCO

    Ready-mixed 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 zebra crossing and pavement between tall buildings, sun and shade

    A-Joint® Repair powered by ECCO

    2-component repair mortar for eroded 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 sweepers, frost and de-icing salt.
  • Curved driveway with grey paving bricks, grass and a flower bed alongside a home

    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.