If you would you like to know more about Zoontjens, need advice or a quotation, please contact us.

Zoontjens International B.V.

Jules Verneweg 94A
5015 BM Tilburg

PO Box 61, 5000 AB Tilburg
The Netherlands

Our locations

The Netherlands

Jules Verneweg 94A
5015 BM Tilburg
PO Box 61, 5000 AB Tilburg
P: +31 13 5 379 379


Zoontjens België NV
Albertkade 3
3980 Tessenderlo
P: +32 13 67 48 39


Zoontjens Deutschland GmbH
Siemensstraße 31
47533 Kleve, Deutschland
P: +49 (0) 2821 7 158 784


Zoontjens France SARL
6 rue de Cabanis
31240 L’Union
P: +33 (0)1 53 32 5018

Questions regarding orders?

Questions regarding quotations?

Our contacts in the U.K.

Eric Roovers
Projects manager
+31 6 23 22 77 42
Paul Heerkens
Managing director
+31 6 51 99 18 22

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Frequently asked questions

When applying DNS®Large, we determine the joint width depending on the actual slab. We have developed four different sizes of spacers for this purpose: 3, 4, 5 or 6 mm. DNS®Large must be used with slabs bigger than 60 x 60 cm or if the level has to be elevated by more than 40 cm. DNS®Large can elevate and level the slab surface to a height of up to one metre. We would be delighted to advise you on the most suitable application for your roof.

You can reach us from 8.30 am to 5 pm Monday to Thursday, and from 8.30 am to 4.30 pm on Friday.

You can view our slabs at your local builders’ merchant. Sample pieces of virtually all slabs are available as well. You can request them by phone or by e-mail.

We do not deliver directly to private customers. You can find our slabs at your local builders’ merchant. Please contact us for a dealer near you.

A requirement of the Dutch 2012 Building Decree for new-build and renovation projects is that the way in which maintenance on and around buildings can be done safely must be specified. If maintenance cannot be carried out safely without taking special measures, building-related devices must be provided. The BiboBlock fall arrest system is such a building-related device.

The BiboBlock fall arrest system has been enabling safe maintenance for more than 15 years. We have been testing it extensively, supervised by the relevant authorities, for many years and it fulfils all requirements. The BiboBlock system enables both individual and collective fall arrest safety to be achieved. The BiboBlock fall arrest system is extremely durable, requires little maintenance, other than an inspection of the cable and the 5 year review, does not lead to cold bridging and does not penetrate the roofing.

Anchor devices are not part of the European standard
European Standard EN 795 : 2012 (Personal fall protection equipment) describes the requirements for anchor devices for fall protection. When this standard was harmonised (approved by all countries and institutions) in late 2015, it was accompanied by the warning that building-related anchor facilities were no longer covered by the PPE directives. Since then, building-bound anchor devices have been incorporated into the building directives. However, no substitute standard has been issued as part of the building directives yet. Because of that, for want of a better option, these devices are tested to EN 795:2012 and to CEN TS 16415. The latter standard refers to the number of people who have to use the anchor device simultaneously, but this standard has not yet been harmonised.

Dynamic and static BiboBlock tests
Although there is no standard for building-related anchor devices, systems can be tested for their compliance with EN 795:2012 and CEN TS 16415. The British SATRA Technology Centre undertook this for the BiboBlock fall arrest system by attaching it to various types of roofing and carrying out static and dynamic tests. As always, the BiboBlock fall arrest system was found to comply with the standards in all situations.

Durable and sustainable fall arrest system
The BiboBlock is a durable and sustainable building product that is used as a building-related anchoring device for safe maintenance and demonstrably complies with the requirements of the Dutch Building Decree.

It may be efflorescence. Efflorescence is the result of a chemical reaction of substances in the concrete that become visible as a white residue on the surface of the product. As a rule, this white discolouration tends to go away again under the influence of rain and other weather conditions. Efflorescence does not affect the structural strength of the product and can never be a reason for claims for damages.