SealteQ SLS | Groningen

Wasaweg 29
9723 JD Groningen

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SealteQ SLS specifically offers solutions for improving the load-bearing functions of foundations, encompassing both building foundations and those of infrastructural works. Our focus is on soil improvement through the application of injection techniques, executed in an innovative and environmentally conscious manner. We inject the soil layers with SLS polymer foam. In July 2020, SealteQ Group established Waterproofing SLS B.V. (hereinafter SealteQ SLS). SLS stands for Slab Lifting and Stabilization. The service package of SealteQ SLS comprises four specializations: floor lifting, void filling, soil stabilization, and foundation repair.

Albert-Jan Kamping Project Manager

André-Jan Meertens Head of Corporate Office

Arjan Bijlsma Design Project Manager

Carlijn Veenhuis Process Manager | SealteQ Group

Chris Uittenbogaard Director SealteQ West | Shareholder

Christa Noorda Office Manager

Claudia den Ouden Secretary

Claudia Tavares Office Manager

Damian Kerssies QHSE Officer | SealteQ Group

Danny Knol Site Supervisor

Dick van der Haar Warehouse Manager

Edwin Valster Site Supervisor

Edwin van Boxtel

Edwin van der Kolk Operations Manager

Elena Haandrikman Financial administrative employee

Esther Korte HR Employee | SealteQ Group

Ewout Brekhof Employee of the business office

Frits Sahetapy Work Preparer / Quality Officer

Gerrit Uilenreef Project Manager

Gert Kamphuis Project Manager

Gerthé Klaassens Director of Operations | SealteQ Group

Gianluigi Gariuolo Geotechnical Advisor

Gorrit Visser Operations Manager

Gustav Ciaccia

Hans Bonfrer Project Manager

Hans Vredeveld Project Manager

Harald Hoogeveen Project Manager

Hielke Kuiper QHSE Manager | SealteQ Group

Inge Breuer Office Manager

Iris de Hollander Corporate Recruiter | SealteQ Group

Jan Henk Wubs

Janique Driftwood Business Controller | SealteQ Group

Jelle Boersma Junior Project Manager

Jeroen Kroeze Head of Business Office | Procurement SealteQ Group

Jeroen Prikar Warehouse employee

Johan Saadhoff Insulation Foreman

Johan Sanders Project Manager

John Greven Site Supervisor

Jos van Dijk Financial Director | SealteQ Group

Karin Feikens-Hart Project Administrator

Kim van Zaanen Office Manager

Klaas van der Wolde Estimator | Work Planner

Laurence Moorlag Project Manager

Lida Tol Secretarial Financial Assistant

Linda Bross Head of Corporate Office

Lisa van Houten Content Marketer | SealteQ Group

Lisette Vos Financial administrative employee

Lotte Saman HR Advisor | SealteQ Group

Lynde Kats Financial Administration Employee

Marcel Vrijs Project Manager

Marianne van Dalsen Financial administrative employee

Marinus Scholte Site Supervisor

Mark Venema Work Planner

Martijn Schouten Project Manager

Martin Bell Financial Controller | SealteQ Group

Martin van der Leest Managing Director SealteQ Group | shareholder

Melanie Hofmeijer HR Manager | SealteQ Group

Michiel Reinders Employee Business Office

Mike Wiering Employee of the business office

Mikey from Varik Junior Site Supervisor

Mylan Lunenborg Assistant Project Manager

Nick Johannes Work Planner

Niels Jonkman Junior Cost Estimator

Ömer Likoglu Technical Manager

Patrick Schellings

Paul Besseler Operations Manager

Paul Kuiper Financial Manager | SealteQ Group

Peter Heersping Work Planner

Peter Hindriks Project Manager

Peter Schultinga Operations Manager

Peter van ‘t Erve Site Supervisor

Peter Westra Chief Operating Officer | COO SealteQ Group

Quintin ter Bruggen Operations Manager

Remco Hofman Warehouse employee

Richard Kuiper Project Coordinator Injection Techniques

Rick Eikens Site Supervisor

Robert Eseryel Project Manager

Robert Lunenborg Director SealteQ Group | Shareholder

Ronald den Ouden Site Supervisor

Rowin Schuiling Assistant Controller | SealteQ Group

Roy van Marissing Project Manager

Seb from Atteveld Junior project manager and quality coordinator

Sebastian Beukema Wake Warehouse employee

Tim Roll

Wim Moedt Work Planner | Application Administrator SealteQ Group

Foundation repair on Brugstraat in Daarlerveen (Project KADH)

Foundation repair on the Hoofdstraat in Vroomshoop

Ground stabilization through injection techniques for Combination Herepoort

SLS polymer foam stabilizes subgrade along A12 freeway

Foundation repair canal Almelo de Haandrik

On Thursday, April 17 and Tuesday, April 22, 2025, the completion of two fully restored houses at Brugstraat 15 and 15A took place in Daarlerveen. Both houses had sustained significant damage due to subsidence caused by uneven settlement in the foundation. A technically challenging project, where SealteQ SLS specialists once again demonstrated our strengths.

On Thursday, March 20, the foundation repair of a residence on Hoofdstraat in Vroomshoop was successfully completed. A remarkable project in which the experts from SealteQ SLS played a crucial role. The foundation of this residence was severely affected by uneven settlements and subsidence, leading to significant damage to the building. The challenge? Restoring the foundation without damaging the existing basement. Thanks to a well-considered approach, craftsmanship, and attention to detail, this was achieved.

In a recent project in Daalerveen, SealteQ SLS specialists played a crucial role in the foundation repair of a building that had suffered extensive damage due to uneven settlement and a partially collapsed foundation. The issue with the home's foundation required a well-thought-out approach to prevent further damage while minimizing disruption to the residents during the foundation repair operation.

A wonderful workplace for the specialists of SealteQ SLS this week. They were working on the sea dike in Farmsum in recent days.

Over the weekend of 24, 25 and 26 February, Combinatie Herepoort carried out maintenance works on the longitudinal joint of a section of the temporary ring road. As part of these works, the underlying foundation and reinforced soil structure were stabilised using injection techniques.

Our Waterproofing SLS service stabilizes the subsoil of various structures along the A12 motorway, near Bunnik. We are commissioned by BAM to do this. We inject the subsoil near the Kromme Rijn, the Ecotunnel, and various viaducts with SLS polymer foam. This stabilizes, fills, and compacts the subsoil.

An increasing number of houses in the Netherlands are experiencing foundation damage. The causes vary, but the problem is significant and continues to grow. It is estimated that approximately 1 million homes in the Netherlands may face foundation problems. This information can be found on the website of the Knowledge Center for Foundation Problem Solutions (KCAF): www.kcaf.nl.