Sould Aps
Søuld Aps is a Copenhagen-based manufacturer producing acoustic building materials (panels, boards, dividers, lamellas, tiles) from eelgrass, serving architects, commercial and hospitality clients, and OEM brand partners across Europe, North America, and Australia.
- Company typePrivate
- Founded2010
- HeadquartersCopenhagen, Denmark
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Sould Aps does
Søuld Aps is a Copenhagen-headquartered material manufacturer founded in 2010 that produces acoustic building products from eelgrass — a marine plant naturally washed ashore along the Danish coastline. The company processes dried eelgrass fibers into acoustic panels and boards (Acoustic Mats, Boards, FR variants, Dividers, Upholstery Mats), complemented by wooden mounting systems (Wooden Frames, Wooden Joints, Wooden Lamellas co-developed with JJI) and design-format tiles (Søuld Fragments) made from production offcuts. The products deliver specifier-grade performance: acoustic performance up to Class A/B, fire classifications ranging from D-s1,d1 to B-s1,d0 depending on mounting, humidity regulation through natural fiber properties, and Cradle to Cradle Certified Gold (v4.1) across Material Health, Circularity and Full Scope, with a third-party verified EPD confirming net carbon storage in the A1-A3 lifecycle stage.
The company sells through a hybrid go-to-market combining an enterprise field-sales motion targeting architects and interior designers on bespoke projects, a channel partner network of dealers across 15+ countries in Europe, North America and Australia (including Spinneybeck | FilzFelt under MillerKnoll for North America), and OEM/brand collaborations licensing eelgrass material into partner products such as Normann Copenhagen's Mat Chair, Tom Dixon's Bird Chaise, Mutebox acoustic pods, Rudy Audio speakers and CombiWall glass walls. Pricing is project-based and quote-driven with no public list pricing. Primary customer segments are commercial and hospitality interiors (hotels, restaurants, museums, offices), architects and interior designers as specifiers, residential end users for premium homes, and OEM brand partners.
Operations are anchored by a production facility in North Jutland, Denmark and a combined office and showroom in Nørrebro, Copenhagen. The company is privately held by five co-founders — architects Tobias Øhrstrøm and Pi Fabrin, sustainable design engineers Gunnar Agerskov and Kirsten Lynge, and eelgrass thatcher Henning Johansen — with current leadership comprising Kirsten Lynge, Tobias Øhrstrøm and partner/CEO Mads Arentoft. Søuld reports 1-10 employees, no disclosed external institutional funding, and operates globally with no geographic restrictions.
Sould Aps firmographics
Firmographics- Name
- Sould Aps
- Legal name
- Søuld Aps
- Website
- https://sould.dk
- Company type
- Private
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Søuld Aps is a Copenhagen-based manufacturer producing acoustic building materials (panels, boards, dividers, lamellas, tiles) from eelgrass, serving architects, commercial and hospitality clients, and OEM brand partners across Europe, North America, and Australia.
- Ownership category
- akta.pro rank
Sould Aps industry classification
Industry- Product category
- Acoustic Building Materials
- NAICS
- Other Furniture Related Product Manufacturing (3379), Office Furniture (except Wood) Manufacturing (337214)
- SIC
- Miscellaneous Furniture & Fixtures (2590)
- akta.pro primary industry
- Acoustic & Soundproofing Works (IMAFANAL)
Keywords
Where Sould Aps is headquartered
LocationHeadquarters
- HQ city
- Copenhagen
- HQ country
- Denmark
- HQ region
- Europe
Offices2 records
Markets served
Sould Aps business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Acoustic Building Materials: Sale of acoustic panels and boards made from eelgrass, including Acoustic Mats, Acoustic Boards, Acoustic Dividers, and Upholstery Mats for walls, ceilings, and furniture applications.
- Design Solutions: Custom and bespoke acoustic design solutions including Wooden Frames, Wooden Joints, Wooden Lamellas, and Fragments for specialized interior projects.
- OEM/Brand Collaborations: Integration of eelgrass material into partners' products through OEM partnerships with brands like Normann Copenhagen, Spinneybeck, Rudy Audio, and Mutebox.
- Samples and Accessories: Sale of sample kits for product evaluation and specification purposes through online Shopify store.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Project-based pricing |
Go-to-market motion2 records
Distribution channels7 records
Marketing channels7 records
Sould Aps product offering
Product offeringCore offering
Søuld manufactures and sells acoustic building products — including Acoustic Mats, Acoustic Boards (standard and FR variants), Acoustic Dividers, Wooden Frames/Joints/Lamellas, Fragments tiles, and Upholstery Mats — made from eelgrass collected along the Danish coastline. The company supplies architects, interior designers, hospitality, retail, cultural, and OEM clients directly and through an international dealer network, with bespoke acoustic design solutions for projects. It also operates an e-commerce sample store and engages in OEM/licensing partnerships with brands such as Spinneybeck | FilzFelt, Normann Copenhagen, Mutebox, Rudy Audio, and JJI.
Product overview
Søuld is a Danish material manufacturer producing acoustic building materials from eelgrass—a natural, carbon-binding sea plant with deep roots in Danish building tradition. The product portfolio centers on acoustic panels and boards (Mats, Boards, with FR variants) made from eelgrass, complemented by wooden mounting systems (Wooden Frames, Joints, Lamellas) and specialized formats (Acoustic Dividers, Fragments tiles, Upholstery Mats). Brand collaboration products extend the eelgrass material into furniture and interior solutions through partnerships with Spinneybeck | FilzFelt (Søuld Wall, Søuld Baffle, Søuld + Felt products), Mutebox (acoustic pods), Rudy Audio (speakers), Normann Copenhagen (Mat Chair), and JJI (Wooden Lamellas). The company also offers Design Solutions and Bespoke Projects for customized applications. All products are designed for circularity, carbon storage, and improved indoor environments with acoustic regulation, fire resistance, and humidity control.
Differentiator
Problem solved
Functional benefit
Products and services
- Søuld Acoustic Mats Primary acoustic panels made from eelgrass collected along Danish coastlines; deliver high acoustic performance through the porous eelgrass structure, effectively reducing noise and creating calm, comfortable spaces for walls and ceilings.
- Søuld Acoustic Mats FR Fire-resistant version of the acoustic mats achieving Fire Class C-s1-d1 to D-s1-d1 when mounted on gypsum board; combines acoustic performance with safety certifications and inherent fire resistance from the natural mineral salts in eelgrass.
- Søuld Acoustic Boards Rigid acoustic board format for wall and ceiling applications, offering acoustic performance with natural eelgrass texture and carbon-storing properties.
- Søuld Acoustic Dividers Freestanding acoustic partition panels integrating Søuld Acoustic Mats, achieving Acoustic Class A; create spatial definition while supporting acoustic comfort in open environments.
- Søuld Wooden Frames Natural wooden frames holding eelgrass acoustic mats, designed as floating acoustic elements for suspension installations; available in various wood types and configurations.
- Søuld Wooden Joints Modular wooden joint system for creating customized acoustic wall and ceiling compositions with eelgrass panel integration, used in installations such as podcast studios.
- Søuld Wooden Lamellas Acoustic wood system developed with JJI combining wooden lamella surfaces with integrated eelgrass acoustic mats behind; achieves fire classification B-s1,d0 and acoustic performance up to Class A and Class B.
- Søuld Fragments Tile-based acoustic product made from offcuts of eelgrass panels; smaller pieces reassembled into refined designs with flat and rounded elements, creating relief compositions inspired by brick ornamentation.
- Søuld Upholstery Mats Eelgrass mats designed for furniture integration in seating applications; provides firm cushion support suitable for daybeds, sofas, and lounge modules, including use in Tom Dixon's Bird Chaise Chair.
- Søuld + Felt Wall Wall-mounted acoustic panels combining eelgrass with Wool Design Felt; available in over ninety felt colours with chamfered or wrapped edges, distributed across North America through Spinneybeck | FilzFelt.
- Søuld Baffle Suspended acoustic ceiling panels made from Søuld Acoustic Board FR reaching Fire Class A; available through Spinneybeck across North America with custom lengths and flexible suspension options.
- Søuld Wall Wall-mounted acoustic panels made from eelgrass, featuring chamfered edges for varied orientations; Fire Class A with fully circular design, distributed across North America through Spinneybeck.
- Rudy Audio Speakers High-end speakers by Rudy Audio (Søren Rose & Københavns Møbelsnedkeri) integrating Søuld Acoustic Boards as internal sound-absorbing elements within solid oak cabinet construction.
- Mutebox Acoustic Pod Flexible in-room meeting spaces by Mutebox featuring Søuld eelgrass acoustic panels on exterior surfaces with carved grooves creating shadow and light effects.
- CombiWall System Glass wall system by CombiWall with integrated Søuld Acoustic Boards, combining transparency with tactile eelgrass panels for acoustic comfort in glass partition applications.
- Mat Chair by Normann Copenhagen Contemporary shell chair designed by Foersom & Hiort-Lorenzen for Normann Copenhagen, crafted from hemp and eelgrass; designed for disassembly with recyclable components.
- Søuld Sample Kit Sample kit allowing customers to experience texture, tactile feel, scent, colour and quality of eelgrass products before purchase; available for order through the online Shopify store.
Quantifiable outcome
- NRC rating of 0.65
- +4 more outcomes
Companies that use Sould Aps
Customer profileNamed customers16 records
Segments5 records
Ideal customer profiles4 records
Sould Aps technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Sould Aps partnerships and signals
Strategic signalPartnerships
20 partnerships are on record, tiered flagship, minor and core.
- Norm ArchitectsflagshipCurated COMPOSED MATTER exhibition at 3daysofdesign 2026, bringing together Søuld with Sumum and Motarasu. Explored how materials, light and form interact to shape atmosphere and sensory experience.
- Motarasu, RYE, We Do WoodminorStudio Retreat exhibition at 3daysofdesign 2025. Four Danish brands transformed studio apartment into living experience inspired by nature with natural materials including Søuld products.
- Spinneybeck | FilzFelt (MillerKnoll)coreThrough partnership with Spinneybeck | FilzFelt, part of MillerKnoll, Søuld products are distributed across North America. Products include Søuld Wall, Søuld Baffle, and Søuld + Felt Wall/Baffle. Spinneybeck brings long-standing relationships with architects and designers in the contract and residential interiors market.
- OEO StudioflagshipInterior design collaboration for NOMA Kyoto at Ace Hotel. Søuld Acoustic Boards integrated into restaurant interior featuring traditional Japanese craftsmanship with Nordic aesthetics.
- Wang & Söderströmminor27 Antennae installation at EU Council Brussels during Danish Presidency 2025. Eelgrass acoustic panels from Søuld serve as backdrop for 27 sculptural antennae representing EU member states.
- CombiWallcoreDevelopment of glass wall systems with integrated Søuld acoustic panels. Eelgrass panels are integrated into architectural frameworks, adding acoustic comfort and tactile natural counterpoint within transparent glass constructions.
- Holmris B8coreShowroom at Amaliegade features CombiWall glass walls with integrated Søuld acoustic panels. Holmris B8 operates multiple offices across Denmark and Germany.
- Studio Tom DixonflagshipPresented at 'Tom Dixon Twenty' exhibition in Milan 2022. Bird chaise chair upholstered with Søuld Acoustic Mats, testing whether eelgrass material could function as alternative to petrochemical-based foam.
- Lars VejenminorKazo Izakaya Japanese gastropub in Aarhus with Søuld Modular Acoustic Mats as main acoustic solution and interior design collaboration.
- David ThulstrupflagshipMOMENTUM Collection exploring tactility of eelgrass through four limited-edition designs: Low Table, High Table, Podium and Screen. Integrates glass and steel with Søuld Acoustic Mats.
- Space10minorClimate Layers exhibition at Space10 gallery. Søuld's Acoustics made from eelgrass featured among innovative materials highlighted for their small CO2 footprint.
- Normann CopenhagencoreCollaboration on Mat Chair designed by Foersom & Hiort-Lorenzen. The shell is crafted from hemp and eelgrass - renewable, biobased materials replacing fossil-based alternatives. Søuld provides eelgrass fibers not suited for acoustic panels for use in chair shells, creating material synergy.
- JJIcoreClose collaboration to develop Wooden Lamella system combining JJI's crafted wooden lamella expertise with Søuld's eelgrass acoustic mats. Achieves fire classification B-s1,d0 while delivering acoustic performance up to Class A and Class B.
- Rudy AudiocoreSøuld Acoustic Boards integrated as internal sound-absorbing element in high-end speakers crafted by Søren Rose and Københavns Møbelsnedkeri. Eelgrass panels contribute to sound control inside speaker cabinets.
- MuteboxcoreSøuld acoustic panels integrated on exterior surfaces of Mutebox flexible meeting pods. Eelgrass panels feature carved grooves creating play of shadow and light while contributing to balanced acoustic environment.
- Gate 21coreLead partner in Interreg project Power Bio focused on green transition. Project explores collection of eelgrass as part of municipal beach cleaning and investigates biodiversity impacts of using dead eelgrass from shores.
- Interreg Öresund-Kattegat-Skagerak (ÖKS)corePower Bio project (2021-2027) working with municipalities in Sweden and Denmark to test, demonstrate and implement new practices for collection of biomasses including washed-up seaweed. Focus on cascade thinking and longer value chains.
- Emilija ŠkarnulytėminorArt installation 'Aphotic Zone' at Louisiana Museum of Modern Art using Søuld Acoustic Boards as backdrop for underwater beauty and dystopian science fiction video installation.
- Signe HytteminorSTOA collection of tables for COMPOSED MATTER at 3daysofdesign 2026. Integrated Søuld eelgrass panels paired with brushed aluminium surfaces exploring structure, materiality and rhythm.
- MAST ArchitectsminorWATER TOWER pavilion for Danish Architecture Centre's exhibition 'Water Is Coming'. Søuld forms centerpiece in conceptual approach to living on water.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
Sould Aps competitors and assessment
Company assessmentDirect peers
- Offecct (Flokk): Swedish premium acoustic and furniture brand (now part of Flokk) producing design-led acoustic panels, screens, and furniture. Comparable in design-led premium positioning, Scandinavian origin, and architect/designer customer base.
- BAUX: Swedish manufacturer of acoustic panels and tiles, originally made from wood wool. Closest direct competitor in the premium biobased acoustic panel space — same sustainability narrative, same target customers (architects, designers, commercial interiors), same dealer/specifier go-to-market.
- Troldtekt: Danish wood wool acoustic panel manufacturer producing sustainable ceiling and wall panels. Shares Danish origin, natural material positioning, design-led specification model, and overlap in architects/designers as primary customer base.
- Abstracta (Glimakra): Swedish acoustic solutions company producing screens, panels, and furniture for offices and public spaces. Comparable in design-led acoustic solutions with similar specification-driven model in Scandinavian and European commercial interiors markets.
Broad incumbents
- Saint-Gobain Ecophon: Global leader in acoustic ceilings and wall panels from glass wool and other materials. Broad incumbent in the same product category serving the same commercial/institutional specification market, but at much larger scale and without the biobased differentiation Søuld offers.
- Designtex: Larger US surface materials manufacturer offering acoustic textiles, panels, and wallcoverings for commercial interiors. Broad incumbent with adjacent product category (acoustic wall finishes) targeting the same architect/specifier channel at greater scale.
- Knauf Insulation: Large multinational insulation and acoustic products manufacturer with growing biobased ranges (e.g., wood wool, hemp). Broad incumbent with overlapping end-uses (commercial acoustic ceilings/walls) and increasing sustainability positioning that could pressure premium biobased specialists.
Others
- Spinneybeck | FilzFelt (MillerKnoll): North American distributor and felt manufacturer (MillerKnoll subsidiary) that distributes Søuld products in the US/Canada. Listed here as an ecosystem participant — partly channel partner, partly adjacent felt-acoustic competitor — rather than a direct peer.
Emerging players
- Submaterial: US-based maker of natural material acoustic and architectural panels (wool felt, recycled leather). Emerging player with overlapping sustainability narrative and design-led specification model, but US-focused and with different material base than Søuld's eelgrass.
- WoodUpp (formerly Wood on Walls): Danish maker of wood acoustic panels and lamella systems. Adjacent position in the biobased acoustic panel market with overlapping Scandinavian specification customer base, though wood-based rather than eelgrass-based.
Market position
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Sould Aps social profiles
Digital presenceSould Aps compliance and trust
Trust signalCompliance10 records
Sould Aps financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sould Aps leadership team
Management profileNumber of profiles
Profiles10 records
Sould Aps funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sould Aps M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sould Aps
What does Sould Aps do?
Søuld manufactures and sells acoustic building products — including Acoustic Mats, Acoustic Boards (standard and FR variants), Acoustic Dividers, Wooden Frames/Joints/Lamellas, Fragments tiles, and Upholstery Mats — made from eelgrass collected along the Danish coastline. The company supplies architects, interior designers, hospitality, retail, cultural, and OEM clients directly and through an international dealer network, with bespoke acoustic design solutions for projects. It also operates an e-commerce sample store and engages in OEM/licensing partnerships with brands such as Spinneybeck | FilzFelt, Normann Copenhagen, Mutebox, Rudy Audio, and JJI.
Is Sould Aps a public or private company?
Sould Aps is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Sould Aps founded?
Sould Aps was founded in 2010. It employs 1 to 10 people.
Where is Sould Aps based?
Sould Aps is headquartered in Copenhagen, Denmark, in the Europe region.
How does Sould Aps make money?
Four revenue lines are on record. Acoustic Building Materials are the primary driver. The others are design Solutions, OEM/Brand Collaborations and samples and Accessories.
Who are Sould Aps's main competitors?
Direct peers on record are Offecct (Flokk), BAUX, Troldtekt and Abstracta (Glimakra). Broad incumbents are Saint-Gobain Ecophon, Designtex and Knauf Insulation. Spinneybeck | FilzFelt (MillerKnoll) is listed as an others. Emerging players are Submaterial and WoodUpp (formerly Wood on Walls).
Does Sould Aps have an API?
No public API is recorded for Sould Aps.
What industry is Sould Aps in?
Sould Aps's product category is Acoustic Building Materials. Its primary akta.pro industry code is IMAFANAL, Acoustic & Soundproofing Works. Its NAICS code is 3379 and its SIC code is 2590.