SBZ

What SBZ does

SBZ (legal name Speciaalbouw Zierikzee B.V.) is a Dutch private limited company founded in 1982 and headquartered at Bedrijvenweg 4, Leiderdorp, Netherlands. The company designs, manufactures, and installs custom controlled-environment spaces built primarily from sandwich panels (EPS, stone wool, and PIR). Its core product portfolio spans cooling and freezing cells, climate cabinets and test chambers, machine rooms and workspaces, cleanrooms and growing chambers, and a range of custom doors, sheet-metal (zetwerk) components, and accessories. All design, factory production, and on-site installation are handled in-house, with SBZ employing its own engineering team, factory workforce in Leiderdorp, and монтеры (fitters/technicians) who travel to customer sites.

The business operates on a project-based B2B model: each installation is custom-engineered in collaboration with the customer, produced in SBZ's own facility, and commissioned on-site. Revenue is generated through one-off construction projects and the sale of sandwich panels, custom doors, and accessories. Pricing is quote-based and not publicly disclosed. The company primarily serves enterprise and SMB customers in food processing and storage, industrial and manufacturing, and horticulture and research across the Netherlands, Belgium, and Germany, with select international projects (e.g., Sweden). Notable customers include Newrest Inflight Netherlands, Vroegop-Windig, Nijssen Koeling B.V., IVL bedrijfskoeling B.V., JHL Group, and Waltec Practical Waste Solutions. Customer acquisition is largely direct (phone, email, referrals) with minimal digital marketing presence limited to a website, LinkedIn, and YouTube channel.

The company is privately held with no disclosed parent, investors, or funding rounds. Revenue, headcount, and ownership details are not publicly available. SBZ positions itself as a 40+ year specialist emphasizing in-house capability, custom craftsmanship, and the ability to handle special and technically challenging projects.

Name

SBZ

Legal name

Speciaalbouw Zierikzee B.V.

Website

https://sbzbv.nl

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

SBZ (Speciaalbouw Zierikzee B.V.) is a Dutch custom manufacturer founded in 1982 that designs, produces, and installs sandwich panel-based controlled-environment spaces — cooling and freezing cells, climate and test chambers, cleanrooms, machine rooms, and custom doors — for B2B customers across food processing, industrial, and horticulture sectors in the Netherlands, Belgium, and Germany.

Ownership category

akta.pro rank

Product category

Custom Industrial Enclosures

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Drywall and Insulation Contractors (238310), Showcase, Partition, Shelving, and Locker Manufacturing (337215)

SIC

Refrigeration & Service Industry Machinery (3580), Prefabricated Metal Buildings & Components (3448), Partitions, Shelvg, Lockers, & Office & Store Fixtures (2540)

akta.pro primary industry

Cold Room Panels, Doors & Seals Repair (HSAOAJAK)

akta.pro secondary industries

Healthcare & Laboratory Interior Fit-Out (IMAFANAC), Drywall Installation & Replacement (Hang/Retrofit) (HSAGACAD)

Keywords

• Sandwich panel construction
• Cold storage cells
• Climate chamber manufacturing
• Controlled environment rooms
• Custom industrial enclosures

Headquarters

HQ city

Leiderdorp

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Construction Projects: SBZ designs, manufactures, and installs custom controlled-environment spaces (cold cells, freeze cells, climate rooms, growth chambers, machine rooms, work spaces) for B2B customers. Each project is custom-designed with clients and delivered with their own workforce.
2. Sandwich Panel Products: Sale of EPS, stone wool, and PIR sandwich panels, produced in their own factory.
3. Custom Doors and Accessories: Production and sale of standard and custom doors (swing, sliding, cool/freeze, automatic, overhead, rolling, sliding walls, hatches, pendulum doors), accessories (bumpers, channels, mounting profiles, sheet metal, windows, locks), and sheet metal work (bending, cutting, punching).
4. Specials / Custom Build: Specialty custom-built products including automatic sliding doors, special-shaped spaces, cheese cabinets, climate cabinets, sound-insulating cabins, extraction hoods, germination cabinets, machine enclosures/rooms, water tanks.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

SBZ designs, manufactures, and installs custom sandwich panel-based controlled-environment spaces — including cooling cells, freezing cells, climate cabinets and test chambers, cleanrooms, growing chambers, machine rooms, workspaces, and partition walls. Projects are custom-engineered in collaboration with the client, prefabricated at SBZ's own factory in Leiderdorp (Netherlands), and installed on-site by SBZ's own fitters, primarily across the Netherlands, Belgium, and Germany.

Product overview

SBZ is a specialist construction company (Speciaalbouw Zierikzee B.V.) that designs, manufactures, and installs custom sandwich panel-based spaces. The core portfolio centers on sandwich panels (EPS, stone wool, and PIR), which serve as the foundational building material for a suite of conditioned-space products: cooling and freezing cells, climate cabinets and test chambers, machine rooms and workspaces, cleanrooms and growing chambers, and custom specialty rooms. The product line is complemented by self-manufactured doors, sheet metal bending work (zetwerk), and a range of accessories. All products are designed by SBZ engineers, prepared in SBZ's own factory in Leiderdorp, and installed on-site by SBZ's own fitters.

Differentiator

Problem solved

Functional benefit

Products and services

• Sandwich Panels Insulating sandwich panels in EPS, stone wool, and PIR variants, designed for cooling/freezing cells, workspaces, cleanrooms, growing chambers, climate cabinets, and custom builds. SBZ's foundational building product.
• Cooling and Freezing Cells Custom-built cooling and freezing cells for which SBZ has over 35 years of construction experience, prepared in-house and installed by SBZ's own fitters using flexible sandwich panels that require minimal modifications to existing buildings.
• Climate Cabinets and Test Chambers High-end custom-built climate cabinets and test chambers constructed in SBZ's Leiderdorp workshop or on-site, used for temperature testing, climate testing, seed and plant growth testing, humidity testing, battery testing, sound testing, and steam testing.
• Machine Rooms and Workspaces Sandwich panel-based spaces including soundproof rooms, offices, laboratories, machine rooms, machine enclosures, storage spaces, blast cabinets, test rooms, and workspaces.
• Cleanrooms, Climate Cells, and Growing Chambers Cleanrooms and growing chambers that meet stringent requirements, with finishes tailored to a hygienic and sterile working climate.
• Custom Doors Standard and custom doors produced in SBZ's own factory in Leiderdorp, including industrial swing doors, industrial sliding doors, cool and freeze doors, automatic doors, overhead/lift doors, roller doors, sliding walls, hatches, and pendulum doors.
• Specials (Custom-Built Specialty Products) Custom-built specialty products including automatic sliding doors, spaces with special shapes, cheese cabinets, climate cabinets, sound-insulating cabins, extraction hoods, germination cabinets, machine enclosures, and water tanks.
• Zetwerk (Sheet Metal Bending) Sheet metal bending work up to 3 mm thick and 3000 mm long, produced using SBZ's own machinery (two shears, two bending brakes, and a punch nibbling machine). Stock includes Sendzimir galvanized, painted steel plates, stainless steel (304 and 316), and aluminum.
• Accessories (Toebehoren) Accessories and extras custom-fitted to SBZ products, including crash protection, channels and ducts, mounting profiles, sheet metal work, windows, and locks.

Quantifiable outcome

• Large free spans are possible with sandwich panels, allowing optimal use of workspace or storage area
• +1 more outcomes

Named customers9 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered minor and core.

• BG Door International B.V.minorChannel Partner/ Reseller/ DistributorBG Door International collaborated with SBZ on a food processing factory project, supplying fast-acting doors (snelroldeuren) as part of SBZ's complete door palette for the project.
• Nijssen Koeling B.V.coreStrategic or Co-development PartnerNijssen Koeling B.V. commissioned SBZ to build mobile climate cells and climate chambers for their MyGrowthRoom product line. SBZ builds the cells while Nijssen handles the technical installations, lighting, and power connections. This is a recurring collaboration with multiple projects.
• IVL bedrijfskoeling B.V.coreStrategic or Co-development PartnerIVL bedrijfskoeling B.V. commissioned SBZ to produce three custom climate cabinets (kiemkast) for seed germination. SBZ built the cabinets with custom foodsafe sandwich panels and high-quality hardware (chrome-plated hinges and latch closures).
• Van den Berg klimaattechniekminorStrategic or Co-development PartnerVan den Berg klimaattechniek commissioned SBZ to build a custom climate cabinet for testing batteries, accumulators and other mobile energy sources. The cabinet features fire-resistant construction and explosion pressure relief mechanisms.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• ArcelorMittal Construction: Large European producer of steel-based sandwich panels and profiled roofing/walling for industrial and commercial buildings. Overlaps with SBZ in panel-supply layer and competes in cold-storage envelopes.
• Ruukki Construction: Nordic building-products manufacturer offering sandwich panels and complete steel-building systems for industrial, commercial, and cold-storage applications. Comparable panel-technology stack and European project footprint.
• Kingspan Group: Global leader in insulated panels and pre-engineered building systems, including cold-store and controlled-environment solutions. A broad incumbent whose standardized panel kits and certified systems compete with SBZ on mid-complexity cold-room projects.
• Brucha GmbH: Austrian manufacturer of PIR and mineral-wool sandwich panels widely used in cold storage and industrial halls across Europe. Competes with SBZ on panel supply and increasingly on engineered cold-room assembly.
• Trimo: Slovenian manufacturer of fire-rated and insulated sandwich panels and modular building envelopes serving industrial and architectural markets. Comparable product portfolio (PIR/mineral wool panels) and European project execution.
• Metecno: Global sandwich-panel manufacturer with European operations producing PIR, PUR, and mineral-wool panels for cold-storage, industrial, and commercial buildings. Competes on the supply side of SBZ's value chain.

Regional players

• IsoBouw Systems: Dutch manufacturer of EPS and PIR insulation products including sandwich-panel systems. Comparable regional panel-manufacturing capability focused on the Dutch market where SBZ is headquartered.

Others

• Nijssen Koeling B.V. Dutch cooling-installation specialist and core SBZ partner; commissions SBZ for climate cells under the MyGrowthRoom line. Functionally adjacent (cooling technology integrator) and a key demand channel rather than a competitor.
• IVL Bedrijfskoeling B.V. Dutch commercial-refrigeration contractor that commissions SBZ for custom climate cabinets. Adjacent integrator partner rather than direct competitor; represents the OEM-style relationship channel for SBZ's specialty builds.

Direct peers

• Holtemp: Belgian custom cold-room and freezer-cell builder with comparable project-based delivery model for industrial and food-sector clients across Benelux. Most direct functional peer to SBZ's core cooling/freezing cell business.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@sbzb.v.3930
• LinkedInlinkedin.com/company/sbz-b-v-
• Facebookfacebook.com/sbzbv

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 SBZ