Leadax
Leadax Circular Roofing B.V. manufactures circular waterproofing products — lead-replacement flashing and flat-roof membranes — made from recycled PVB recovered from safety glass. The Netherlands-based company sells to roofers, contractors, architects, and prefab manufacturers across 24 countries via anchor distributors Wienerberger AG and VisscherHolland Bouw.
- Company typePrivate
- Founded2014
- HeadquartersWapenveld, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Leadax does
Leadax Circular Roofing B.V. is a Netherlands-based manufacturer of circular waterproofing and lead-replacement products for the construction industry, founded in 2014 by Roeland van Delden and headquartered in Wapenveld. The company's core technology converts recycled polyvinyl butyral (r-PVB) — a plastic film recovered from automotive and architectural safety glass — into roofing membranes and flashing products. Leadax's portfolio comprises three core lines: Leadax Original (traditional-style lead-replacement flashing, 3 mm thick), Leadax Easy FA (fully self-adhesive flashing for faster installation), and Leadax Roov (a circular flat-roofing membrane with high solar reflectivity). Supporting accessories include Bio Bind welding fluid, LRS reinforcement strips, prefabricated corners, and application tools. Independent tests confirm a minimum 30-year lifespan and recyclability up to seven times.
The company generates revenue through one-time sales of these physical products to building professionals (roofers, contractors, architects, prefab manufacturers) via a hybrid distribution model. In Europe, Leadax Roov is distributed exclusively by Wienerberger AG under a 2022 agreement with sales cooperation beginning Spring 2023; Leadax Flashing is distributed exclusively in the Netherlands by VisscherHolland Bouw. Beyond these anchor partners, hundreds of retailers and resellers sell Leadax products worldwide, complemented by direct channels including a free-sample programme and demo days. The company is active in 24 countries, holds KIWA, BBA Agrément, ISO 9001, and NEMO certifications, and is positioned to benefit from EU regulations tightening lead-exposure limits effective April 2026.
Leadax is privately held, founder-controlled (no disclosed institutional investors), employs more than 50 people, and anticipated 35% growth in 2023. Headcount is small relative to revenue potential in construction materials, signaling a still-scaling company. Ownership is concentrated, with founder Roeland van Delden transitioning from CEO to a founder role in 2023 while remaining active in international expansion. The company is bootstrapped in appearance, with growth financed operationally and supported by recognition such as the ING Circular Business Award (2019) and National Entrepreneurship Award 2023.
Leadax firmographics
Firmographics- Name
- Leadax
- Legal name
- Leadax Circular Roofing B.V.
- Website
- https://leadax.com
- Company type
- Private
- Founded year
- 2014
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Leadax Circular Roofing B.V. manufactures circular waterproofing products — lead-replacement flashing and flat-roof membranes — made from recycled PVB recovered from safety glass. The Netherlands-based company sells to roofers, contractors, architects, and prefab manufacturers across 24 countries via anchor distributors Wienerberger AG and VisscherHolland Bouw.
- Ownership category
- akta.pro rank
Leadax industry classification
Industry- Product category
- Construction Waterproofing Materials
- NAICS
- Asphalt Paving, Roofing, and Saturated Materials Manufacturing (32412)
- SIC
- Miscellaneous Plastics Products (3080)
- akta.pro primary industry
- Backer Rods, Tapes & Joint Accessories (IMADAOAL)
- akta.pro secondary industry
- Roof Insulation & Cover Boards (IMADAFAN)
Keywords
Where Leadax is headquartered
LocationHeadquarters
- HQ city
- Wapenveld
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Leadax business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Product Sales (B2B/B2B2C): Leadax generates revenue primarily through the sale of its circular waterproofing products — Leadax Flashing (Original, Easy FA, Easy SA) and Leadax Roov — to building professionals (roofers, contractors, architects, prefab manufacturers) via distribution and reseller partners. Products are sold as one-time purchase items (roofing materials), not subscription-based.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | One time/ perpetual license | Free product samples |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels8 records
Leadax product offering
Product offeringCore offering
Leadax manufactures and sells circular waterproofing products made from recycled polyvinyl butyral (r-PVB) recovered from safety glass, intended as sustainable replacements for traditional lead in construction. Its core product lines are Leadax Original (lead-replacement flashing), Leadax Easy FA (fully self-adhesive lead-replacement flashing), and Leadax Roov (a flat-roof membrane), complemented by installation tools and accessories such as rollers, sealants, welding fluids and prefabricated corners. The products are sold to roofers, contractors, architects, prefab manufacturers and retailers through exclusive distributors and resellers across Europe and beyond.
Product overview
Leadax is a manufacturer of circular and sustainable waterproofing products for the construction industry, primarily serving the roofing sector. The product portfolio consists of three core product lines: Leadax Original (traditional-style lead replacement flashing applied like conventional lead), Leadax Easy FA (fully self-adhesive lead replacement flashing for quicker application), and Leadax Roov (circular roofing membrane for flat and slightly pitched roofs). All products are made from recycled polyvinyl butyral (PVB), a plastic film from safety glass such as car windows. The company also offers a comprehensive range of tools and accessories including steel rollers, lead dressers, scissors, sealants, and specialized corner pieces to support proper installation of their products.
Differentiator
Problem solved
Functional benefit
Brands
- Leadax Original: The first lead replacement product made from recycled PVB, with the same look and feel as traditional lead. 3.00mm thick, available in roll lengths of 6 meters, weighing 3.85 kg/m².
- Leadax Easy FA
- Leadax Roov
Products and services
- Leadax Original Circular lead replacement flashing with the look-and-feel of traditional lead, made from recycled PVB plastic. Applied in the same way as traditional lead, 3.00mm thick, roll lengths of 6 meters, weighing 3.85 kg/m², with embedded expanded metal for shape retention and 40% deformability. Targets professional roofers, contractors, architects and prefab manufacturers.
- Leadax Easy FA Fully self-adhesive lead replacement flashing made from recycled PVB. 1.8mm thick (excluding butyl), roll lengths of 5 meters, weighing 2.2 kg/m² (excluding butyl). Quick and easy manual application without additional tools, intended for professional roofers and contractors.
- Leadax Roov Circular roofing membrane made from recycled PVB for flat and slightly pitched roofs. Off-white colour with high solar reflectivity, suitable for mechanically fixed, loose-laid ballasted and fully adhered systems, with a minimum 30-year lifespan and end-of-life recyclability up to seven times. Sold to professional roofers, contractors and distributors.
- Tools & Accessories Range of installation accessories for professional application of Leadax Flashing and Leadax Roov products, including steel rollers, lead dressers, specialized scissors, high-tack sealant, Leadax Bio Bind bioethanol welding fluid, LRS reinforcement strips, test pens, and prefabricated inner/outer 90° corners.
Quantifiable outcome
- Products can be recycled up to 7 times, keeping PVB waste in a circular stream instead of landfill or incineration.
- +3 more outcomes
Companies that use Leadax
Customer profileNamed customers7 records
Segments4 records
Ideal customer profiles4 records
Leadax technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Leadax partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core and minor.
- Wienerberger AGcoreDuring the World Expo in Dubai (September 2022), Leadax CEO Roeland van Delden and Wienerberger CCO Solveig Menard-Galli signed an exclusive European distribution agreement for Leadax Roov. Wienerberger, which aims to achieve climate neutrality by 2050, distributes Leadax Roov across Europe as part of its circular economy strategy. The partnership includes country-based agreements with local business targets. Sales cooperation began in Spring 2023. Wienerberger Slovakia also signed a separate exclusive sales agreement at the World Expo for innovative low-CO2 flat roof solutions.
- VisscherHolland BouwcoreVisscherHolland Bouw from Steenwijk, Netherlands, is the exclusive distributor for Leadax Flashing products in the Netherlands. Their motto is 'Doen wat we zeggen' (We do what we say). They serve as the professional extension of the construction sector and ensure that Dutch retail points are stocked with Leadax lead replacements. They hosted a successful Leadax Demo Day at Van der Stad | Polvo in Wijchen.
- Breman Installatiefabriek (Breman Installation Group)minorBreman Installatiefabriek, part of the Breman Installation Group in the Netherlands, is a processor that consciously chooses Leadax products for its prefabricated installation work. They value the combination of innovation, high quality, craftsmanship, and sustainability alignment.
- Breman Installation GroupminorLeadax and Breman Installation Group collaborate on the development of prefab roof solutions that speed up installation, reduce waste, and enhance sustainability in the built environment. Leadax Flashing supports heat pump installations on rooftops as part of this collaboration.
- Fleck GmbHminorFleck GmbH is a German partner that hosted the FLECK-tory event, a gathering dedicated to innovation, collaboration, and the future of roofing solutions. Leadax Technical Advisor Remigio Garau participated in live product demonstrations showcasing Leadax Flashings alongside Fleck ECO FORM Basic, Easy, and Max solutions.
- OTM Sistemas ConstructivosminorOTM Sistemas Constructivos is Leadax's trusted partner in Spain. Together with Recense, they participated at the REBUILD trade fair in Madrid (May 2025), showcasing circular waterproofing solutions and driving the shift towards healthier, low-carbon building materials in Spain.
- RecenseminorRecense is Leadax's trusted partner in Spain. Together with OTM Sistemas Constructivos, they participated at the REBUILD trade fair in Madrid, showcasing circular waterproofing solutions and supporting the shift towards healthier, low-carbon building materials.
- Rijksdienst voor Ondernemend Nederland (RVO)minorLeadax waterproofed the Dutch Pavilion at World Expo 2020 Dubai through an exclusive sponsorship agreement with RVO (Rijksdienst voor Ondernemend Nederland), part of the Dutch Ministry of Foreign Affairs. The Dutch Pavilion was entirely dedicated to sustainability, circularity, and innovation.
- Wienerberger AG (Sample Distribution)minorWienerberger AG handles shipment of Leadax Roov samples within Europe, sharing logistics with Leadax to enable free sample delivery to prospects across Europe.
- VisscherHolland Bouw (Event Partnership)minorVisscherHolland Bouw, Leadax's exclusive Netherlands distributor, hosted a successful Leadax Demo Day at Van der Stad | Polvo B.V. in Wijchen, bringing together professional installers and construction partners for hands-on knowledge sharing about Leadax products.
Scale indicators7 records
Recent moves1 record
Expansion highlights5 records
Leadax competitors and assessment
Company assessmentBroad incumbents
- Mapei: Mapei is a global construction chemicals company with waterproofing, roofing, and sealing product lines (Mapelastic, Mapeplan). Their broad portfolio includes solutions that compete with Leadax in both flashing and membrane categories, particularly in commercial construction.
- Sika AG: Sika is a global construction chemicals giant with extensive waterproofing, roofing, and sealing product lines (Sarnafil, Sikaplan, Sikalastic). Sika competes broadly with Leadax Roov in commercial flat-roof membranes and could easily expand into circular or lead-replacement offerings as a well-funded incumbent.
- IKO: IKO is a global manufacturer of roofing systems (shingles, single-ply membranes, waterproofing) with European operations through IKO Sales International. They compete with Leadax Roov across flat-roof waterproofing and have the scale to enter circular roofing categories if regulations or market demand warrant.
- Kingspan Group: Kingspan is a global building envelope products company with waterproofing and roofing membrane lines (including through its ownership of Ubbink). Kingspan's portfolio overlaps Leadax's addressable waterproofing and roofing markets, and the group has the resources to acquire or replicate circular lead-replacement offerings.
- Carlisle Construction Materials: Carlisle is one of the world's largest producers of single-ply roofing membranes (EPDM, TPO, PVC) for commercial and residential flat-roof applications. They are a broad incumbent competing with Leadax Roov for the flat-roofing category globally, particularly in North America and Europe.
- Bauder: Bauder is a major European manufacturer of flat-roof and pitched-roof waterproofing systems (single-ply membranes, bituminous systems, green roofs). Their broad portfolio overlaps with Leadax Roov in flat-roof waterproofing for commercial and residential applications across Germany, UK, and other EU markets.
- Tremco CPG (incl. Vandex, Nudura, Willseal): Tremco Construction Products Group has waterproofing, roofing, and sealing system lines (including Vandex for concrete waterproofing) sold across Europe and North America. They compete with Leadax in commercial waterproofing markets and have the channel depth and R&D budget to expand into circular offerings.
Others
- Wienerberger AG: Wienerberger is Leadax's exclusive European distribution partner for Leadax Roov (signed at World Expo Dubai 2022; sales cooperation began Spring 2023). Although not a competitor, Wienerberger is the single most strategically connected company to Leadax's near-term growth, controlling the primary route to European roofers and merchants for the larger Roov product.
Direct peers
- Kloeber (Wakaflex): Kloeber is a German manufacturer that markets Wakaflex, a well-established lead-free flashing and roof accessory product line sold across Europe. Wakaflex competes with Leadax Original/Easy FA for the same installer base and application use cases (chimneys, walls, dormers), making Kloeber Leadax's most established direct competitor in the lead-replacement category.
- Ubbink (Veltihal, part of the VELUX/Catic Group): Ubbink is a Dutch manufacturer of lead replacement flashings and roof ventilation products, the most direct competitor to Leadax in the Benelux/Nordic roofing market. They sell comparable lead-substitute and waterproofing roll products to professional roofers via the same channel architecture, putting them in head-to-head competition for the EU flashing share that Leadax targets.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Leadax social profiles
Digital presenceLeadax compliance and trust
Trust signalCompliance6 records
Leadax financial estimates
Financial estimateRevenue estimate
Valuation estimate
Leadax leadership team
Management profileNumber of profiles
Profiles2 records
Leadax funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Leadax 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 Leadax
What does Leadax do?
Leadax manufactures and sells circular waterproofing products made from recycled polyvinyl butyral (r-PVB) recovered from safety glass, intended as sustainable replacements for traditional lead in construction. Its core product lines are Leadax Original (lead-replacement flashing), Leadax Easy FA (fully self-adhesive lead-replacement flashing), and Leadax Roov (a flat-roof membrane), complemented by installation tools and accessories such as rollers, sealants, welding fluids and prefabricated corners. The products are sold to roofers, contractors, architects, prefab manufacturers and retailers through exclusive distributors and resellers across Europe and beyond.
Is Leadax a public or private company?
Leadax is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Leadax founded?
Leadax was founded in 2014. It employs 11 to 50 people.
Where is Leadax based?
Leadax is headquartered in Wapenveld, Netherlands, in the Europe region.
How does Leadax make money?
One revenue line is on record: product Sales (B2B/B2B2C).
Who are Leadax's main competitors?
Broad incumbents on record are Mapei, Sika AG, IKO, Kingspan Group, Carlisle Construction Materials, Bauder and Tremco CPG (incl. Vandex, Nudura, Willseal). Wienerberger AG is listed as an others. Direct peers are Kloeber (Wakaflex) and Ubbink (Veltihal, part of the VELUX/Catic Group).
Does Leadax have an API?
No public API is recorded for Leadax.
What industry is Leadax in?
Leadax's product category is Construction Waterproofing Materials. Its primary akta.pro industry code is IMADAOAL, Backer Rods, Tapes & Joint Accessories, with a secondary code of IMADAFAN, Roof Insulation & Cover Boards. Its NAICS code is 32412 and its SIC code is 3080.