01

Re-use

One of the benefits of a rock-based material is its durability. Following proper sanitization procedures will extend the lifecycle for rockwool allowing it to be re-used multiple times. Make sure the stonewool is properly cleaned and sanitized with all roots and organics from the previous harvest removed. Re-use is the most ideal solution for home growers

02

Circular Solutions

What was once old has become new. Grodan re-manufactures used material post-harvest into new blocks and slabs. ROCKWOOL facilities in the Netherlands, Denmark, and Russia are presently offering these circular programs with additional sites in north-western Europe and North America in development.

03

Heavy Clay

Grodan works with several brick manufacturing facilities throughout Europe to re-manufacture used stonewool into clay for bricks. Thousands of tons of stonewool are re-manufactured into bricks every year.

04

Compost

Grodan’s stonewool is an excellent beneficial use amendment and provides many technical benefits to finished compost. Many industrial composting facilities throughout North America and Europe accept stonewool in their inbound feedstock streams, finding new homes for thousands of tons of stonewool every year. If you are unsure if your local compost facility accepts stonewool or would like them to start contact us.

05

Industrial Bedding & Erosion Control

Stonewool’s strong insulating and water holding properties make it an excellent amendment for industrial bedding and topping or to prevent erosion. The stonewool is used as an alternative cover to help prevent noxious odors from effecting local communities. Its also used as a safety measure to fight the spread of diseases and potential fires that could erupt in landfills or mines.

06

Potting Mix

Stonewool can be ground up and mixed in with potting soils to provide many added values including nutrients from the initial growing periods and added porosity & water holding capacity.

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North America
North America

North America
Europe
Europe

Europe
Australia
Australia

Australia

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Los Angeles
Los Angeles

Grodan works with one of the largest commercial recycling organizations in California that oversees 250,000 customers. The recycler can arrange shipment or accept the material to its site where the mineral wool is processed into an industrial bedding to fight erosion. To find out how you can join this network contact below.

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Palm Springs
Palm Springs

Grodan is proud to work with the leading compost recycling service provider in the San Jacinto Valley. Grodan mineral wool is accepted at their processing facility where the mineral wool is combined with other incoming feedstocks to create a moisture rich finished compost.

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Toronto
Toronto

Grodan has partnered with one of the leading agricultural recycling service providers in all of Canada. This partnership has been performing recycling services for Grodan mineral wool customers the past three years recycling thousands of tons of mineral wool per year into compost.

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Vancouver
Vancouver

Grodan has worked with the leading agricultural recycling solutions supplier for the past 5 years. Each year Grodan collaborates in the recycling of 3,000 to 5,000 tons of stonewool into compost

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Salinas
Salinas

Grodan stonewool can be effectively recycled alongside traditional green waste. Simply remove the plastic and any contamination and toss the pure stonewool into your green waste bin. Need to self-haul or work with a 3rd party? Contact your local Grodan representative to connect your hauler with the recycler.

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Kelowna
Kelowna

Grodan has reached an agreement with one of the leading waste hauling and recycling facilities in the region. Grodan customers can use the services that can haul the material from your site and create a finished compost.

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Quebec
Quebec

Sherbrooke, Montreal and Quebec City: Grodan is proud to work with the leading supplier of compost in the province of Quebec. The recycler has three facilities throughout the province that can accept Grodan mineral wool. All products must be de-sleeved and all shipping must be arranged by your local solid waste hauler. Contact your local representative to participate and get your mineral wool recycled.

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Rifle
Rifle

Do you grow in the mountains and want your mineral wool recycled? Simply contact your local Grodan representative and our local recycling service provider in the Rifle region will drop off a container and have the material recycled through their proprietary processing line. All mineral wool media must be de-sleeved for acceptance.

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Cleveland
Cleveland

Grodan is proud to work with the leading supplier of compost in the state of Ohio. Growers must de-sleeve the plastic film and our recycler will handle the rest from there.

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Netherlands
Netherlands

Venray: Biemans Group
Emmen: PreZero
Wateringen: Renewi

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Denmark
Denmark

Odense: Marius Pedersen A/S
Sandholt: Pedersen

End-use in Rockwool stone wool

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France
France

Guipavas: Recycleurs Bretons
Saint Remy de Provence: Azur Trade

End-use in Compost / Rockwool stone wool / Brick Industry

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Austria
Austria

Schwechat: GBC Österreich

End-use on Eco Green roofs

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United Kingdom
United Kingdom

Kent: Material Change ltd.
Helmdon: Material Change ltd.

End-use in the Brick Industry

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Finland
Finland

Närpes: Simons Transport

End-use in Composting

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Belgium
Belgium

Ranst: Meeus BV

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Germany
Germany

Ganderkesee: K-Nord GmbH
Eitting: Wurzer Umwelt GmbH

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Norway
Norway

Over Grodan wholesale partner contact Grodan

End-use in Composting

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Sweden
Sweden

Sandholt Denmark: Pedersen

End-use in Rockwool stone wool

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Wingfield
Wingfield

L.F. Jeffries ltd.

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Recycling Rate
0

The ratio for how much material we sold to how much product was recycled.

% of Cust. Offered Recycling
0

How many direct Grodan customers are offered recycling solutions for their mineral wool in their local markets.

Here at Grodan, we are driven to leverage the advantages of hydroponic growing with our sustainable stone wool substrate to support knowledgeable farmers to grow more healthy produce and medicine using less resources. Presently, over 70% of all freshwater resources worldwide are consumed by agriculture, combined with the demands of a growing population who will need food and urban land. All of which is putting an enormous strain on our earth’s natural resources. Innovative technologies and products will have to meet the critical challenge to reduce our dependency on fossil fuels, reduce consumption of our natural resources, and reduce our food’s environmental impact across its entire supply chain.

As part of our commitment to the circular economy, Grodan has built a network of partnerships and collaboration agreements with leading recycling organizations in North America, Europe, Asia, and Australia. Grodan offers recycling services to over 62% of its product consumers across the globe and with the help of our loyal customers, we recycle thousands of tons of stone wool every year. In 2022 alone, Grodan achieved a 65% recycling rate! If Grodan was a country, it would be one of the most successful recycling countries in the world.

As we continue to grow our recycling options for stone wool consumers, our aim is to make Grodan stone wool one of the most effectively recycled products in the world.

Yianni Monahan

Product Lifecycle Management Manager

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