What deventer profile does

Deventer Profile GmbH, operating commercially as Deventer Seals, is a German-based manufacturer of rubber and silicone sealing profiles (Dichtungen) and glazing solutions for window and door systems. The company develops and supplies seals for wood, wood-aluminum, and plastic frame materials across all major installation situations, including window seals, exterior and interior door seals, sliding element seals, system-solution seals for wood-aluminum hybrids, glazing seals, glazing blocks, and seal accessories such as window sill seals. Its core competency rests on decades of accumulated seal-engineering know-how, supported by an in-house Prüflabor (testing laboratory) and standardized material and colour specifications.

Deventer is a wholly-owned subsidiary of Roto Frank Fenster- und Türtechnologie GmbH (Roto FTT) and operates as part of the broader Roto corporate group. Within that group it benefits from coordinated product development, joint distribution of hardware systems and seals, and unified ordering and delivery processes. The company maintains three operational offices — Berlin (Germany), Breda (Netherlands), and Sosnowiec (Poland) — and a nine-language website, positioning it as a European partner to window and door manufacturers rather than a purely domestic supplier.

The business model is B2B hardware sales: Deventer sells standard catalog seals alongside customer-specific custom solutions directly to manufacturers ranging from craft businesses (Handwerksbetrieb) to large industrial customers with highly automated processes, and supplements this with a dealer network surfaced through an online dealer locator. Pricing is not publicly disclosed. The company runs a digital self-service product finder (Produktfinder) keyed on frame material and groove width, and distributes technical documentation through the Roto Medienportal. Revenue figures are not publicly reported.

Name

deventer profile

Legal name

DEVENTER Profile GmbH

Website

https://deventer-profile.com

Company type

Private

Operating status

Operating

Short description

Deventer Profile GmbH, trading as Deventer Seals, is a German manufacturer of rubber and silicone sealing profiles and glazing solutions for window and door systems, serving European window and door manufacturers of all sizes as a wholly-owned subsidiary of the Roto Frank group.

Ownership category

akta.pro rank

Product category

Window and Door Sealing Components

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

Weatherstripping, Thresholds & Door/Window Seals (IMADAIAL)

akta.pro secondary industry

Glazing Hardware, Sealants & Accessories (Spacers/Gaskets/Setting Blocks) (IMADAHAJ)

Keywords

• Sealing profiles
• Window seals
• Door seals
• Glazing solutions
• Elastomer components

Headquarters

HQ city

Breda

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Seal Products Sales: Deventer generates revenue through the sale of seals and related products for windows, doors, sliding systems, and glazing applications. Revenue comes from both standard product catalog sales and customer-specific custom solutions. Products are sold to manufacturers of all sizes from craft businesses to large industrial customers.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Deventer Profile GmbH develops and manufactures sealing profiles and glazing solutions for window and door systems. Its product range covers window seals (for wood, wood-aluminum, and plastic frames), exterior door seals, interior door seals, sliding element seals, system solution seals for wood-aluminum hybrids, glazing seals (Verglasungsdichtungen), glazing blocks (Verglasungsklötze), and accessories such as window sill seals. The company offers both standard catalog products and customer-specific custom solutions to manufacturers of all sizes.

Product overview

Deventer Profile GmbH operates as part of Roto Frank Fenster- und Türtechnologie GmbH and offers a comprehensive portfolio of sealing solutions (Dichtungen) for windows, doors, and glazing applications. The product range includes seals for windows (wood, wood-aluminum, plastic), exterior doors, interior doors, sliding systems, and system solutions, complemented by accessories and glazing solutions. The company serves customers of all sizes from craft businesses to highly automated industrial customers, providing both standard products and customer-specific solutions. Key offerings include window seals, door seals, glazing seals (Verglasungsdichtungen), glazing blocks (Verglasungsklötze), and a product finder tool for identifying appropriate seals based on frame material and groove width.

Differentiator

Problem solved

Functional benefit

Products and services

• Dichtungen für Fenster (Window Seals) Seal products for windows, available for wood, wood-aluminum, and plastic frame materials. Covers virtually all window installation situations. For window manufacturers using wood, wood-aluminum, and plastic frame materials.
• Dichtungen für Türen (Exterior Door Seals) Exterior door seal solutions designed for wood frame materials, providing weather protection and insulation. For door manufacturers producing exterior wood-framed doors.
• Dichtungen für Innentüren (Interior Door Seals) Interior door seal products for wood frames, providing acoustic and thermal separation between rooms. For manufacturers of interior wooden doors.
• Dichtungen für Schiebesysteme (Sliding Element Seals) Seal solutions for sliding window and door systems made of wood, ensuring smooth operation and weather resistance. For manufacturers of sliding window and door systems.
• Dichtungen für Systemlösungen (System Solution Seals) Specialized sealing solutions for wood-aluminum window and door system solutions with integrated profiles. For manufacturers of wood-aluminum hybrid window and door systems.
• Verglasungsdichtungen (Glazing Seals) Glazing seal products that secure glass packages in frames and protect against weather and room climate influences. For window and door manufacturers integrating glass units.
• Verglasungsklötze (Glazing Blocks) Glazing blocks that position and secure glass packages within window frames. For window and door manufacturers integrating glass units.
• Zubehör für Dichtungen (Seal Accessories) Accessories supporting seal installation and performance, including window sill seals. For window and door manufacturers seeking complementary sealing components.
• Produktfinder (Product Finder Tool) Self-service product finder tool enabling customers to identify suitable sealing products by frame material and groove width characteristics. For window and door manufacturers and dealers selecting the correct seal.

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

One partnership is on record.

• Roto Frank Fenster- und Türtechnologie GmbH (Roto FTT)coreStrategic or Co-development PartnerDeventer is part of Roto Frank Fenster- und Türtechnologie GmbH, operating as a subsidiary within the Roto Group. The partnership provides synergies including perfectly coordinated products, joint distribution of hardware systems and seals, and unified ordering and delivery processes. This parent company relationship enables Deventer to leverage shared resources and distribution channels across the Roto Group.

Scale indicators2 records

Recent moves5 records

Broad incumbents

• Bostik (Arkema): Bostik produces adhesives and sealants used in window/door assembly and perimeter sealing. It is a broader incumbent supplying fenestration customers across Europe with overlapping sealing and bonding categories.
• Soudal: Soudal is the world's largest independent sealant manufacturer and a broad incumbent in window/door sealing, including pre-compressed tapes and perimeter sealants. It competes with Deventer across many of the same end-uses with a wider portfolio.
• Sika AG: Sika is a global construction chemicals company offering sealants, adhesives, and waterproofing used around windows, doors, and facades. It is a broader incumbent with overlapping fenestration sealing applications but a much wider product portfolio.
• Tremco Incorporated: Tremco offers construction sealants and weatherproofing systems for building envelopes, including window/door perimeter sealing. It is a broader incumbent in the same fenestration sealing category as Deventer, with a wider construction product portfolio.
• Henkel: Henkel's adhesive technologies business supplies sealants and bonding products used in window and door manufacturing. It is a broader incumbent with global scale, competing with Deventer in adjacent sealing use cases.
• 3M Industrial Adhesives and Tapes: 3M offers industrial sealing tapes and weatherstripping products used in building envelope and fenestration applications. It is a broad incumbent with overlapping window/door sealing categories but a much broader industrial portfolio.

Direct peers

• Schlegel (Trelleborg): Trelleborg's Schlegel brand is one of the closest direct peers to Deventer, manufacturing pile and extruded sealing profiles for windows, doors, and facades. It competes in the same product category and serves similar European window/door OEM and aftermarket customers.
• Illbruck (Tremco CPG): Illbruck is a German/European specialist in window and door sealing, foam tapes, and weatherproofing solutions, making it a direct comparable in seals for fenestration. It serves the same window/door OEM customer base with overlapping product families.

Others

• Rehau Group: Rehau manufactures polymer-based building products including window profiles, sealing systems, and facade components. It is adjacent to Deventer in fenestration polymers and is a related party in the European window/door supply chain.
• Roto Frank Fenster- und Türtechnologie: Roto Frank FTT is the parent company of Deventer and a leading European manufacturer of window and door hardware. It is an enabling/related party providing joint distribution, unified ordering, and shared product ranges that power Deventer's go-to-market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

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 deventer profile