Alert Isolatie B.V.

What Alert Isolatie B.V. does

Alert Isolatie B.V. is a privately held Dutch insulation specialist, founded in 1979 and headquartered in Schiedam, Zuid-Holland. The company designs and supplies custom prefabricated insulation solutions for the Dutch construction sector, converting raw materials from A-brand manufacturers (Rockwool, Ursa, IKO, Kingspan, Recticel, Jackodur, Knauf, Metisse, Flamro) into cut-to-size, laminated, and finished products. Its portfolio spans stone wool, glass wool, rigid foam (PIR/XPS/EPS), bio-based cotton insulation, fire-resistant penetration products, and PIR+Finish combination panels that integrate insulation with finishing layers in a single step.

The company's primary differentiators are its proprietary AIRTIGHT and FIRETIGHT product systems, which address airtightness and fire-resistance requirements at building connections and joints. Three patents protect key technologies: FIRETIGHT WSW (a cavity barrier achieving 60 minutes fire resistance per EN 1363-1:2020), Airtape (vacuum-compressed mineral wool for airtight seals), and FIRETIGHT Fuse (an open-state cavity barrier with melt fuses for ventilated facades). Products are documented in the BCRG-database, supporting ISDE subsidy applications for end customers.

Alert Isolatie sells exclusively through wholesale distribution (groot)handel) — end customers must place orders via their distributor. Pricing is quote-based and not publicly disclosed. The company serves a fragmented Dutch customer base across residential, commercial, healthcare, hospitality, and education construction segments, including projects such as Slingeland Ziekenhuis Doetinchem, Amsterdam RAI Hotel, and High Five Utrecht Sciencepark. With approximately 11 employees, no disclosed funding history, and no parent holding company, Alert Isolatie operates as an independently owned niche specialist.

Name

Alert Isolatie B.V.

Legal name

Alert Isolatie B.V.

Website

https://alertisolatie.nl

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

11–50 employees

Short description

Alert Isolatie B.V. is a Dutch insulation specialist (founded 1979) that designs and supplies custom prefabricated insulation products, including its proprietary AIRTIGHT and FIRETIGHT systems, to the Dutch construction sector via exclusive wholesale distribution.

Ownership category

akta.pro rank

Product category

Building Insulation Materials

NAICS

Urethane and Other Foam Product (except Polystyrene) Manufacturing (32615), Polystyrene Foam Product Manufacturing (32614), Mineral Wool Manufacturing (327993)

SIC

Plastics Foam Products (3086), Plastics Products, Nec (3089)

akta.pro primary industry

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

akta.pro secondary industries

Foam Plastic Insulation (EPS/XPS/PIR/PUR) (IMADAGAD), Polyurethane (PU) Rigid Foam Manufacturing (IMANAIAD)

Keywords

• Prefabricated insulation products
• Fire-resistant insulation
• Construction insulation solutions
• Airtight building systems
• Custom-cut insulation materials

Headquarters

HQ city

Schiedam

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Prefabricated Insulation Products: Sales of custom prefabricated insulation products including stone wool, glass wool, PIR boards, rigid foam, and cotton insulation. Products are cut to size and can be glued or sealed. Company sells exclusively via wholesale distribution.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Alert Isolatie B.V. designs, fabricates and supplies custom prefabricated insulation products for the Dutch construction industry, including stone wool, glass wool, PIR, rigid foam and cotton insulation. The company operates proprietary AIRTIGHT and FIRETIGHT product lines for airtight and fire-resistant building connections, and works with A-brand raw material suppliers such as Rockwool, Ursa and IKO. Products are sold exclusively through wholesale distribution partners to construction-sector customers.

Product overview

Alert Isolatie B.V. is an insulation specialist since 1979 offering a comprehensive portfolio of (prefab) insulation solutions for the construction industry. The product range includes multiple integrated product lines: Airtight/Firetight products for air-sealing and fire protection in building joints; stone wool and glass wool insulation in custom-cut formats; PIR + Finish combination panels providing insulation with integrated finishing layers; rigid foam (PIR, XPS, EPS) insulation; fire-resistant penetration systems (Flamro); and cotton insulation from recycled materials (Metisse). The company also provides supporting accessories for installation. Products are supplied from A-brand manufacturers including Rockwool, Ursa, IKO, Kingspan, Recticel, and Jackodur. Alert Isolatie operates exclusively through wholesale distribution.

Differentiator

Problem solved

Functional benefit

Brands

• AIRTIGHT: A product line for airtight solutions including tapes, air stops, and dakvoet (roof edge) insulation for air-tight building connections.
• FIRETIGHT
• PIR+Finish

Products and services

• Airtight / Firetight

Quantifiable outcome

• FIRETIGHT WSW achieves 60 minutes fire resistance (EI 60) tested per EN 1363-1:2020
• +3 more outcomes

Named customers9 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• RockwoolcoreOthersPrimary supplier of stone wool insulation materials. Alert Isolatie sources Rockwool products for custom prefabricated insulation solutions including Rockvent, RockFit, RockFloor, and other stone wool products.
• UrsacoreOthersSupplier of rigid foam insulation products. Alert Isolatie uses Ursa products as basis for custom rigid foam insulation including PIR, XPS, and EPS solutions.
• IKOcoreOthersSupplier of insulation materials including IKO Enertherm product line. Alert Isolatie offers custom solutions using IKO products.
• KingspancoreOthersSupplier of rigid foam insulation products for custom prefabricated insulation solutions.
• RecticelminorOthersSupplier of rigid foam insulation materials for custom solutions.
• JackodurcoreOthersSupplier of XPS (extruded polystyrene) insulation products including Jackodur EVO, KF, and Plus series. Alert Isolatie offers custom-cut Jackodur products.
• KnaufcoreOthersSupplier of stone wool insulation including Knauf Rock4All products. Alert Isolatie provides custom solutions using Knauf materials.
• MetissecoreOthersSupplier of cotton-based insulation materials made from recycled denim. Alert Isolatie offers custom Metisse cotton insulation products including PRT and MA variants.
• FlamrocoreOthersInternational supplier of fire-resistant passage products including mankets, cable seals, and coatings. Products are EN certified for fire compartmentation applications.
• KemisolminorOthersSupplier of insulation materials for custom solutions.

Scale indicators1 record

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Jackodur (Jackon Insulation): European manufacturer of XPS (extruded polystyrene) insulation products, and a supplier to Alert Isolatie. Comparable in the rigid foam insulation category, but Jackodur is a primary manufacturer with broader geographic reach.
• IKO: European manufacturer of rigid foam insulation (IKO Enertherm) and a supplier to Alert Isolatie. Comparable in the rigid foam insulation category serving Dutch construction, but IKO is a primary manufacturer with broader product diversification.
• Kingspan: Global rigid foam (PIR, XPS) insulation manufacturer and a supplier to Alert Isolatie. Comparable as it produces the underlying PIR/XPS products Alert Isolatie customizes, but Kingspan operates at much larger scale with broader product portfolios and direct sales channels.
• Recticel: European manufacturer of PIR rigid foam insulation and acoustic products, and a supplier to Alert Isolatie. Comparable in the PIR rigid foam insulation space, but Recticel is a primary manufacturer with broader product scope and direct go-to-market.
• Knauf Insulation: European manufacturer of stone wool, glass wool, and other insulation products, and a supplier to Alert Isolatie. Comparable in the same Dutch construction insulation category, but operates at much larger scale with direct sales and standardized product lines.
• Saint-Gobain Isover: Major European glass wool and insulation manufacturer serving the construction industry. Comparable because it competes in the same thermal/acoustic insulation category and serves Dutch and Benelux construction projects, though Isover is a primary manufacturer with a multi-country footprint.
• Rockwool: Global leader in stone wool insulation manufacturing and a primary raw material supplier to Alert Isolatie. Comparable because it dominates the same mineral wool insulation category Alert Isolatie customizes, but Rockwool is a primary manufacturer with much broader geographic and product reach.
• URSA: European manufacturer of glass wool and extruded polystyrene (XPS) insulation, and a supplier to Alert Isolatie. Comparable across the same rigid foam and glass wool product categories, but URSA operates as a primary manufacturer with multi-country distribution.

Direct peers

• Metisse: French manufacturer of bio-based cotton insulation made from recycled denim, and a supplier to Alert Isolatie. Directly comparable because it operates in the same niche sustainable insulation category that Alert Isolatie offers under its cotton insulation line.
• Flamro: International supplier of fire-resistant penetration products (fire collars, cable seals, coatings) and a supplier to Alert Isolatie. Directly comparable because it also serves the passive fire protection / fire compartmentation market in which Alert Isolatie's FIRETIGHT line competes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/alert-isolatie-b-v-

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Alert Isolatie B.V.