The problem
Designers don't avoid secondary fibre because it performs badly.
They avoid it because there is no data. A designer carries the responsibility for the room. Without measured absorption, fire and carbon values, the safe choice is a familiar catalogue product – every time.
Carbon must be shown
Life-cycle carbon is calculated from the design stage. Every material needs data.
The data is missing
Local secondary fibre materials rarely come with measured values.
So it stays unused
Fibre is available and the market exists – but it does not reach the drawing board.
Our answer
The problem is not the material. It is the data.
Absorption depends on fibre diameter, density and structure – not on origin. Once these links are measured, secondary fibre can be designed like any other material.
Measure
Material variants tested in an accredited laboratory: ISO 10534-2, ISO 354, ISO 11654.
DataModel
Established acoustic models (Miki, Delany–Bazley) calibrated with our own results.
PredictionSpecify
Studio turns room requirements into a material solution with a specification sheet.
Specification
Fiberlux Studio · live
Don't take our word for it. Try it.
Pick a room type, enter its size and surfaces. Studio calculates today's reverberation time, how much panel area reaches the target, and gives three options.
How Studio works
- Describe the room. Room type, size and surfaces.
- See the gap. Studio calculates today's reverberation time and the sound absorption needed to reach the target.
- Choose a solution. Three material options with thickness and panel area, and a PDF specification.
Values are indicative, based on published research. EIT Spark replaces them with our own laboratory measurements.
Proof
What already exists.
Interest before any sales
- Estonian furniture manufacturer (management) – interest in felt layers for its products and in using its production offcuts as fibre.
- International textile services company – asked for a proposal to use fibre from its workwear.
- Textile product development student – developing a sound-absorbing product in her thesis; contacted us through the website.
- Nordic-Baltic Textile Circularity Forum, Riga (October 2026) – collectors and sorters confirmed: fibre is available, uses are missing.
Check it yourself
- Fiberlux Studio – Room Calculator and Material Calculator, public and free.
- Trademark Fiberlux – registration decision of the Estonian Patent Office, 16.07.2026.
- Laboratory plan – Turku UAS Acoustics Laboratory (FINAS T293): ISO 10534-2, ISO 354, ISO 11654. Testing planned in Spark.
- Scientific basis – Rubino et al. 2023; Dama et al. 2025.
Market research
- Large, mature market: about 106 million m² and €2.0 billion a year of acoustic ceilings in Europe’s seven largest countries (Interconnection Consulting, 2025). A new material wins share by substitution.
- Proven category: secondary fibre acoustic and insulation products already sell in Europe – Autex ReForm (reclaimed textile, 22–100 €/m²); Métisse, France, 2,000 t a year of recycled-cotton insulation at full capacity.
- Price window: comparable secondary fibre products sell at 35–120 €/m²; wood wool boards (Troldtekt) around 35 €/m².
- Regulation creates the pull: life-cycle carbon calculation for new buildings over 1,000 m² from 2028 and for all new buildings from 2030 (EPBD).
- Gap in the Nordic-Baltic region: few local secondary fibre materials, most are imported and rarely come with design-ready measured data.
Fair questions
What an evaluator would ask.
Is the Studio data reliable today?
Not yet as measured data. Today Studio uses published acoustic models, and its values are indicative. EIT Spark replaces literature values with our own accredited measurements. Every result, also a negative one, goes into the data set.
Is Fiberlux a recycling company?
No. Fiberlux is a materials company. Fibre is the input, measured performance is the value. Studio is how designers reach the material – it is free, because every specification leads to a material order.
Why only two material variants?
Spark does not build a product portfolio. It builds the first measured data set and tests one hypothesis: designers use secondary fibre when trusted data exists.
What about fire safety?
Fire performance is part of material and supplier selection. An indicative fire test is included in Spark; certification follows with a production partner.
Team
From material to market – one team.
One founder knows how a material becomes a company and a product, one turns data into a design tool, one makes the measurements trustworthy.
Martin Toom
Founder and CEO · Industrial implementation and business development. Mechanical engineer with a bachelor’s degree in economics and nearly 30 years of experience in industrial and construction projects in Finland and Estonia, including Olkiluoto 3 and infrastructure projects. Has mapped the production concept, identified technology suppliers, obtained equipment quotations and secured a fibre supply letter of intent.
Role in Spark: business development, partnerships, contract production with partners, market entry.
Kristen Toom
Co-founder · Fiberlux Studio. Built Studio: room acoustics, porous absorber models (Miki, Delany–Bazley) and the ISO 11654 absorption rating, published as a free web tool.
Role in Spark: calibrates Studio with laboratory data and manages the data set.
Kadri-Piibe Järve
Acoustics and environmental expert · Measurement. More than 15 years of noise modelling and measurement (Akukon, Estonian Road Administration, Rail Baltic Estonia); MSc in environmental management.
Role in Spark: measurement plan, laboratory testing and interpretation of results.
Gap we are filling: specification sales to architects – a key person joins by month 6.
Next 9 months · EIT Spark
One hypothesis. A nine-month plan to test it.
Hypothesis: designers specify local secondary fibre when measured technical and CO₂ data exist.
| Month | Work package | Activities | Evidence at the end | Lead |
|---|---|---|---|---|
| M1–3 | CompanyRisk: no legal venture to sign contracts and receive funding. | Founders’ agreement (M1); name check in business register, EUIPO and domain; registration of the OÜ (M2); bank, accounting, EU Funding & Tenders PIC and EIT validation (M2–3); transfer of the Fiberlux trademark (M3). | Registry code and PIC by M3 | Martin |
| M1–3 | PrototypesRisk: suitable felt cannot be sourced and processed to specification. | Choose two material variants (density, fibre blend) from existing producers’ secondary fibre felt; contract production, incl. a ~11 m² specimen of the best variant for ISO 354; confirm the laboratory plan with Turku UAS (FINAS T293). | Two variants ordered by M3 | Martin, Kadri-Piibe |
| M1–3 | Studio v1.0Question: do designers understand and use the tool? | Improve the calculator with architects’ feedback; add a specification PDF. | Studio v1.0 public | Kristen |
| M3–5 | LaboratoryKey question: does secondary fibre reach the target acoustic class? | Impedance tube ISO 10534-2: both variants. Reverberation room ISO 354 and rating EN ISO 11654: best variant, accredited. Indicative reaction-to-fire test. Preliminary CO₂ assessment of both variants. | At least one variant in class A–B. If not: thicker or layered build-up, another felt, or the Industry line | Kadri-Piibe |
| M6 | CalibrationQuestion: do Studio predictions match our measurements? | Replace literature values in Studio with our own measured data; publish measured data sheets. | Predicted vs measured values compared; Studio runs on measured data | Kristen |
| M2–7 | ValidationQuestion: do designers and manufacturers want it – and at what price? | 15–20 interviews with architects, acousticians and manufacturers; Studio tested on their projects; price test at three levels. Events: CreaTech Startup Sprint (M1), Interzum Cologne (M3), New European Bauhaus Festival (M4), Habitare Helsinki (M7). | ≥5 architects use Studio on their own project; ≥1 sample order in the Industry line | Martin |
| M6 | Key personRisk: no sales capacity towards architects. | Recruit a specialist in specification sales to architects and Nordic distribution. | Agreement signed | Martin |
| M8–9 | PilotQuestion: does it work in a real room and lead to orders? | One real room (school, office or renovated dwelling); reverberation time measured before and after; product and technical data sheets for Basic, Design and Premium. | 1 pilot with measured result; 2–3 letters of intent with target price and volume | Martin, Kadri-Piibe |
Budget: €30,000 – Phase 1 (M0–3) €2,062.50, Phase 2 (M3–9) €27,937.50. Most of it goes to prototypes, laboratory testing and validation. Decision points: at the end of each quarter we review the hypotheses and decide to continue, adjust or change direction.
