SealteQ Protect and Preserve

Protecting and maintaining valuable civil-engineering, infrastructural and industrial plants and housing and non-residential buildings is what the SealteQ Group is all about. With our national, international and multidisciplinary approach and regional specialised companies we have acquired a leading position in the market over the last 40 years and we know how to keep it that … Read more

Recent projects

Renovation of the NDSM Welding shop

SealteQ has carried out various concrete repairs on behalf of BMB Ontwikkeling and Regiobouw at the welding shop of the National Monument NDSM. This preserves the status as a cultural heritage. The welding shop The NDSM was a ... Read more

Renovation of the lighthouse of Vlieland

Halfway through July 2019, SealteQ delivered the renovation of the lighthouse of Vlieland to Rijkswaterstaat. A renovation full of challenges and setbacks. The work started in September 2018 should be completed in October 201 ... Read more

SealteQ, Innovative workmanship over the years

  • gasunie

    National maintenance contract of Gasunie

    We are proud to announce that SealteQ will carry out all above-ground maintenance work at Gasunie for the next 5 years. SealteQ was selected and contracted through the European tendering procedure by Gasunie for steel preservation in the West Netherlands for the period 2019 to 2023. With the contract for the Eastern Netherlands already in hand. SealteQ will provide maintenance to all above-ground Gasunie locations in the Netherlands for the next 5 years.

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  • End result of the renovated pier in bonaire

    In 2018, Bouwcombinatie Bonaire commissioned SealteQ to renovate the southern pier in Kralendijk in Bonaire in an innovative way. Over the years, the pier had been heavily affected by the salty climate (corrosion of reinforcement). The pier has been completely renovated as a result of SealteQ's extended maintenance measures. This was the first project on which large-scale glass and carbon fiber reinforced polymer were applied, with an attractive end result. Glass and carbon reinforcement are insensitive to corrosion due to the salty environment. As a result of this work, the lifespan of the pier has been extended for a period of 30 - 40 years.

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  • Oprichting Quake Shield B.V.

    Quakeshield Logo QuakeShield is a joint venture between SealteQ and Oosterhof Holman. Within QuakeShield, patents pending have been developed in joint management, including masonry structures under dynamic motion due to earthquakes or extreme wind stress (hurricanes). A lightweight solution for earthquake-proof construction. Developed by people from Groningen for people from Groningen, but it has worldwide potential. It is a patented, lightweight solution that reinforces brickwork beforehand and afterwards – offering short lead times and an attractive price tag. The solution – which amply meets the current standard for quakeproof new buildings – is scientifically validated by TU Delft and TU Eindhoven.

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  • SealteQ locatie MCB

    Participation 50% in MCB conservation

    SealteQ Group participates in MCB Conserveringen in Bergharen. Stadskanaal / Bergharen, September 15, 2015 - SealteQ Group in Stadskanaal has a 50% participation in the Bergharen-based company MCB Conserveringen. With this SealteQ creates national coverage for its activities. To increase the market position and also serve a number of national clients locally, from the center of the Netherlands, the participation in MCB is an excellent addition.

  • sealteQ Stadskanaal

    New headquarters SealteQ

    The growth of the organization involved the new headquarters of SealteQ in Stadskanaal in 2013. An efficient office with business premises, with GPR award, which enables users to function optimally, partly through the use of a sustainable heat pump system with passive cooling.  

  • Founding Frans Nooren West BV

    A new venture started from Pijnacker entirely from our own power. Physical presence in the area, making flexible efforts for our customers in the region.

  • Best training company special entrepreneurship

    1st prize from the Netherlands. In-house training new staff to a specialist in which safety and quality are among the most important performance indicators.

  • Takeover Jaki Noord BV Heerenveen

    In order to increase the market position in Friesland, this company was acquired in 2010. Jaki Noord is a concept in Friesland in the field of specialist (waterproof) repair and protection of concrete and brickwork.

  • Founding SealteQ Group


    The holding company of the various operating companies is the connecting factor that has become a national player with a specialized service package.

  • Kosmos project multidisciplinary specialism concrete / steel

    In addition to all steel nozzle doors, all concrete vents have been completely renovated. Chloride damage due to penetration salts, previously invalid repair techniques, ASR damage, have been fully repaired under 10 years warranty. With a project size of approximately 17 million, this has been the basis for a further integrated and multidisciplinary approach to the market at the area of specialist maintenance of concrete and steel and the final initiation of the SealteQ protection and retention idea.  

  • Start Cosmos project; renovate spray and drainage complexes Afsluitdijk

    In 2 years, all 50 steel cloak doors and 12 steel shutters were built in the '30's,  (50 tons / piece), in shop the old coating system stripped and completely replaced by a high tech coating system.  

  • Apply induction on slides Afsluitdijk

    For the first time, induction technology in the Netherlands is used to remove the coating. The 50 pieces of the Afsluitdijk slides are partly stripped of a tough elastic coating.  

  • Innovation shot blasting robot under steel bridge

    Nowhere in the world has it been possible to completely disassemble a non-functional coating system completely automated by means of robot technology - at the location - the underside of a steel bridge. MultiPaint did venture to continue this innovation.  

  • Creation of MultiPaint Staalconservering BV


    Already in 1999, this specialization was founded with the startup of MultiPaint VOF. Big projects in steel treated with paint in the oil and gas world and infrastructure.

  • Startup MultiPaint VOF

    Through cooperation between Frans Nooren and Sips, the partnership has been established the VOF MultiPaint. By bundling of know how and capacity this has been the startup for the realization of large radiation and conservation work in the Netherlands.

  • International sealing project

    In Saudi Arabia, the first major international sealing project has been carried out to solve serious groundwater leakage problems for the underground storage of aircraft fuel at the Khamis Mushait airbase.

  • Development of seal product StopaQ

    In 1988, the StopaQ production facility (Stop Aqua) was started. A unique and globally patented sealing product, developed in-house, widely used in cable and pipe conduits below ground level. The reason for its own development came about because of the major groundwater leakage problems at, among other things, telephone and power plants.

  • Development of liquid-tight pavement

    First in the Netherlands, an innovation process has been launched to counter soil pollution at petrol stations. The development involved a new design of a liquid-tight stone combined with an oil and gasoline-resistant flexible joint. As a market leader, in the Netherlands and Germany, more than 1,000 petrol stations have been fluid-tightened in this specific renovation manner.  

  • Development of underwater injection technology

    Rinsing of quay and pile walls is a common problem. Wholly in-house, Frans Nooren developed a waterproof injection system from the water ponds. This development gained national fame through television broadcasts 'Focal in the Market'  

  • Innovation hydrofobering facades

    Waterproofing facades, using silicone. A completely new application in the seventies that resulted in large-scale projects of tens of thousands of square meters impregnating overflowing facades.

  • Woodworm control by acidification

    First in the Netherlands, farms, churches were fully packed in the plastic foil. After that, acetic acid gas was introduced for a few days to eliminate all the pests. This approach to 'wrapping' was completely new. Thousands of objects have been treated in this way.

  • National awareness of pest control

  • The beginning of the company Frans Nooren


    It started in 1973 from the one-man company Frans Nooren, in 1987 this was converted into a B.V. At the start of the company, all kinds of jobs were carried out, such as pest control, kit and sealing work.