Koston Nederland BV

What Koston Nederland BV does

Koston Nederland BV is a Dutch residential insulation specialist headquartered in Almere, Flevoland, that has operated for more than 45 years as one of the oldest post-insulation (na-isolatie) companies in the Netherlands. Founded in 1902 as Koster BV (a tools and hardware trader) and pivoting to insulation in the late 1970s following the Dutch energy crisis, the company became the only non-Shell subsidiary authorized to apply Shell's Termoparels® EPS-pearl insulation system, co-developed with Termokomfort Nederland BV in 1976. The proprietary Termoparels® system uses expanded polystyrene pearls combined with a natural rubber latex binder, injected at high pressure into cavity walls, floors, roof cavities, and crawl spaces; variants include HR-Termoparels®, HR++ Termoparels® (with fire-retardant NEN 6065/6066 compliance), and BiofoamPearls® (a biologically produced lactic-acid-based EPS that won the Rabobank Innovation Challenge 2020 in the Circularity category). The iQ-Therm system supports interior wall insulation for monumental buildings, and Bodemhygrolatie® seals crawl-space floors against ground moisture and cold. Koston also offers calibrated moisture-investigation and advisory services using thermohygrographs, moisture meters, and dew point measurement.

The business runs a direct-to-consumer model targeting residential homeowners across the Randstad and mid-Netherlands, plus a B2B channel serving housing associations and VvEs for collective whole-building projects under the SVOH and ISDE subsidy schemes. The go-to-market starts with a free, no-obligation in-home inspection by certified insulation specialists, followed by a personalized insulation plan and quote; execution typically completes all measures in one day. Pricing is per-project (one-time installation) ranging from approximately €600 for a small-apartment cavity wall job to €3,100 for a detached house, with the ISDE subsidy covering up to 30% of costs and the Energiebespaarlening (co-funded by Rabobank, ASN Bank, and the Dutch government) providing 2.1% financing for amounts under €5,000. Revenue streams include residential insulation installation services and professional moisture-investigation services. As of September 1, 2025, Koston transferred its business activities and employees to Takkenkamp Groep's Takkenkamp Vastgoed Verduurzamers (Regio West, offices in Aalsmeer and Blokker), under which Koston's operational territory is now served by a 450+ employee nationwide network of ten regional offices anchored from Apeldoorn; director Frank Koster stepped down to focus on Termokomfort Europe.

Name

Koston Nederland BV

Legal name

Koston Nederland BV

Website

https://koston.nl

Company type

Private

Founded year

1902

Operating status

Acquired

Headcount range

1–10 employees

Short description

Koston Nederland BV is a Dutch residential insulation specialist serving homeowners and housing associations in the Randstad and mid-Netherlands with proprietary Termoparels® EPS-pearl cavity wall, floor, roof, and crawl-space insulation, plus moisture investigation services; since September 1, 2025, its business activities operate under Takkenkamp Vastgoed Verduurzamers.

Ownership category

akta.pro rank

Product category

Residential Insulation Services

NAICS

Drywall and Insulation Contractors (238310)

SIC

Plastics Foam Products (3086)

akta.pro primary industry

Exterior Insulation & Weatherproofing (House Wrap, Air/Water Barriers) (HSAPAKAK)

akta.pro secondary industry

Insulation & Air/Vapor Barrier Systems (Thermal, Acoustic, WRB/AVB) (IMAFAMAD)

Keywords

• Residential insulation services
• Cavity wall insulation
• Floor insulation
• Roof insulation
• Building energy retrofit

Headquarters

HQ city

Blokker

HQ country

Netherlands

HQ region

Europe

Offices4 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Residential Insulation Installation Services: One-time installation of insulation materials (cavity wall, floor, attic floor, roof, wall insulation) at residential properties. Revenue is generated per project based on surface area (m²), property type, and insulation material chosen. Customers are primarily homeowners who pay upfront or finance via the Energiebespaarlening.
2. Moisture Investigation and Advisory Services: Koston conducts professional moisture analysis using calibrated equipment (thermohygrographs, moisture meters, dew point measurement) for residential and commercial clients, producing detailed diagnostic reports with recommendations.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels9 records

Core offering

Koston Nederland BV is a Dutch insulation specialist offering residential and commercial building insulation services, including cavity wall, floor, roof, crawl space, and interior wall insulation using proprietary Termoparels® EPS pearl systems. Services are delivered through free in-home inspections, personalized insulation plans, and one-day installation by certified specialists. The company also provides moisture investigation and advisory services using calibrated diagnostic equipment.

Product overview

Koston Nederland BV is a specialized insulation company offering a comprehensive range of residential and commercial building insulation solutions. The company provides core insulation services including cavity wall insulation (spouwmuurisolatie), floor insulation (vloerisolatie), roof insulation (dakisolatie), floor bottom insulation (bodemisolatie), and wall insulation (muurisolatie). These services utilize proprietary insulation bead systems including HR Termoparels®, HR++ Termoparels®, and BiofoamPearls®, developed in partnership with Termokomfort Nederland BV. The company also offers moisture investigation services and operates the Bodemhygrolatie® system. The products and services are designed to work together as an integrated home energy efficiency solution, allowing customers to address multiple insulation needs with professional guidance and up to 20-year warranties on certain systems. Since September 2025, business activities have been transferred to Takkenkamp Vastgoed Verduurzamers.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 25–37% reduction in annual heating energy costs after cavity wall insulation
• +5 more outcomes

Named customers11 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Takkenkamp GroepcoreStrategic or Co-development Partner · 1 September 2025Takkenkamp Groep, a leading specialist with 90 years of experience in property sustainability and maintenance, acquired Koston's business activities effective 1 September 2025. Koston's operations and employees transferred to Takkenkamp Vastgoed Verduurzamers, under Regio West (offices in Aalsmeer and Blokker). The acquisition strengthens Takkenkamp's leading position in the insulation industry and expands its presence in mid-Netherlands and the Randstad.
• Termokomfort Nederland BVcoreTechnology or IntegrationKoston is an official Termokomfort® system processor (systeemverwerker), licensed to apply the Termoparels® insulation system — originally developed by Shell in 1976. Koston was one of the first non-Shell subsidiaries to use the system. The relationship gives Koston exclusive access to proprietary EPS pearl insulation materials and binding agents, along with quality-controlled system certification.
• VENIN (Vereniging van Erkende Na-Isolatiebedrijven in Nederland)coreStrategic or Co-development PartnerKoston is a member of VENIN, the Dutch association of certified post-insulation companies. VENIN sets quality standards and certifies member companies. Koston participates in VENIN-initiated activities including the annual Dag van de Isolatie (Day of Insulation) and the 'Wij-isoleren' industry brochure initiative endorsed by the Dutch Minister for Housing.
• Select WindowsminorChannel Partner/ Reseller/ DistributorKoston partners with Select Windows to offer customers additional insulation products including plastic window frames with insulating glass and specially designed dormers. Select Windows provides complementary home insulation products that Koston recommends to its customers as part of a complete energy efficiency package.
• E.nu Cooperative ZaanstadminorStrategic or Co-development PartnerKoston is a member of the E.nu cooperative in Zaanstad, an energy savings initiative that coordinates sustainable energy measures in the Zaanstreek region.
• Wij-isoleren Initiative PartnersminorStrategic or Co-development PartnerKoston participates in the 'Wij-isoleren' (We-insulate) joint industry initiative, an eight-party collaboration including Mineral Wool Association (MWA), NVPU, IKOB-BKB, BouwGarant, AF erkende bedrijven, Stichting Garantiefonds Gevelsystemen, and Afbouwkeur. The initiative provides objective consumer information on post-insulation. Endorsed by Dutch Minister Stef Blok.
• Ridder LetselschademinorOthersRidder Letselschade is a personal injury law firm recommended by Koston on its links page. Not a formal commercial partnership but an informal referral relationship for customers who may need legal assistance related to property damage claims.

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• HOMIJ: Dutch technical services and insulation contractor subsidiary of VolkerWessels. Provides residential and commercial insulation, renovation, and maintenance services across the Netherlands, operating at greater scale and broader scope than Koston's pre-acquisition footprint.
• Kingspan: Irish-headquartered global building envelope solutions group with a substantial insulation portfolio (rigid foam, insulated panels). Competes in the Dutch residential and commercial insulation materials market upstream of specialty installers like Koston.
• Feenstra: Dutch HVAC and ventilation specialist operating nationally across residential and commercial segments. Comparable as a Dutch home energy services operator with overlapping customer base and complementary services to Koston's insulation offerings.
• ROCKWOOL: Global Danish-headquartered mineral wool insulation manufacturer with significant Dutch market presence. Comparable as a building envelope insulation materials provider serving the same Dutch residential retrofit channel.
• Unilin Insulation: Belgian PIR/PUR insulation manufacturer serving the European market, including the Netherlands. Comparable as an upstream insulation materials supplier targeting Dutch residential renovation projects.
• Takkenkamp Groep: Apeldoorn-headquartered property sustainability specialist with 90 years of experience, 450+ employees and ten regional offices. Acquired Koston in September 2025 and now operates Koston's former activities as Takkenkamp Vastgoed Verduurzamers Regio West, making it both parent and the most directly comparable Dutch insulation services operator.

Direct peers

• Plus Isolatie: Dutch residential insulation contractor specializing in cavity wall, floor and roof insulation for homeowners. Directly comparable to Koston on service scope (cavity wall, vloer, dak), target customer (Dutch homeowner) and direct-to-consumer go-to-market.
• Isolatie.com: Dutch residential insulation comparison and installation platform connecting homeowners with certified insulation installers. Comparable to Koston as a Dutch residential cavity wall, floor and roof insulation specialist serving the same end customer via online lead generation.

Others

• Termokomfort Nederland BV: Original developer of the EPS-based Termoparels® insulation system (created by Shell in 1976) and holder of the Termoparels®, HR-Termoparels® and Bodemhygrolatie® trademarks. Koston operates as a licensed Termokomfort® systeemverwerker, making Termokomfort a technology supplier rather than direct competitor.
• Isobouw: Dutch insulation manufacturer and Koston's partner in co-developing the BiofoamPearls® biobased insulation system. Comparable as a building-envelope insulation materials supplier serving the same Dutch residential renovation market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/koston-nederland-bv

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Koston Nederland BV