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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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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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Edmonton
Edmonton

Grodan has partnered with a leading compost supplier and processing facility. The recycling facility accepts the mineral wool on-site where it is processed and combined with other raw feedstocks to create a 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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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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NetherlandsDenmarkRussiaAustralia
Netherlands
Netherlands

Denmark
Denmark

Russia
Russia

Australia
Australia

Our Recycling Performance
Recycling Rate
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The ratio for how much material we sold to how much product was recycled.

% of Cust. Offered Recycling
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How many direct Grodan customers are offered recycling solutions for their mineral wool in their local markets.

Walker Environmental

Grodan is proud to work with Walker Environmental to create new recycling markets for Grodan’s rockwool growing medium. Grodan and Walker Environmental have worked together since 2018 to offer growers in the Toronto and Niagara regions turnkey recycling solutions where the Grodan mineral wool is processed (removed all contaminants), treated, and turned into compost. Since 2018, Grodan has overseen over 10,000 tons recycled with Walker and used for new products.

Walker Environmental operates the most advanced aerobic processing facilities within the province. At these sites, the Grodan mineral wool is debagged and then shredded to a particle size that facilitates the compost system. Once properly shredded and processed the granulate is mixed with alternative source separated organics and composted according to Ontario compost quality regulations in Walkers GORE composting system. The composting process is critical to ensure that any plant pathogens present are fully treated by the high temperatures of the composting process.

The resulting product is a high demand potting mix used by floriculturists throughout Ontario.    

Want to Know more: Contact your local account manager to connect you and your waste hauler to begin recycling now!

20200526 GR PHO 5208

Take Back Program in Russia Expanding

GRODAN is growing fast in the Russian market and with such an expanding market, Grodan has made it a priority to offer commercial recycling opportunities for its customers.

As the Russian government is looking for solutions to prevent the overflow of landfills; GRODAN has worked with local governments, customers, and recyclers to answer the challenge. Throughout 2020 and 2021, GRODAN has conducted numerous re-manufacturing trials at the ROCKWOOL manufacturing sites. Commercial scale pilots with full truckloads of substrate were conducted in Vyborg in the Saint Petersburg region.   These successful pilots were not only proven to be an effective measure in diverting precious materials from the landfills but were used as a feedstock to create NEW GRODAN MINERAL WOOL and reduced natural resource consumption for virgin products. These pilots will continue as GRODAN aims to build and expand the circular economy in Russia and across the globe.

20200526 GR PHO 5209

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.

A new year has begun! Although we may have taken off for the holiday season our recycling collections have kept rolling as we are smack dab in the middle of our used-substrate collection season.

As you all probably have noticed, COVID 19 has had disastrous effects on the global supply chain. In the waste and recycling industries there have been no exceptions. Initially, it seemed our recycling network may have a capacity shortage due to limited operations these past two years. Storage space, transportation capacities, and material allowance have been a premium.

Together, with our local recycling partners, we have increased material storage space, increased material processing capacity, and doubled outlet capacity so the material can be recycled. These efforts have insured that recycling services continue to run smoothly for our European consumers and insure intake for the rest of the 2021/22 season.

With this message we want to thank our partners for their unbelievable effort.

Regards

Tom Vitters

A new year has begun! Although we may have taken off for the holiday season our recycling collections have kept rolling as we are smack dab in the middle of our used-substrate collection season.

As you all probably have noticed, COVID 19 has had disastrous effects on the global supply chain. In the waste and recycling industries there have been no exceptions. Initially, it seemed our recycling network may have a capacity shortage due to limited operations these past two years. Storage space, transportation capacities, and material allowance have been a premium.

Together, with our local recycling partners, we have increased material storage space, increased material processing capacity, and doubled outlet capacity so the material can be recycled. These efforts have insured that recycling services continue to run smoothly for our European consumers and insure intake for the rest of the 2021/22 season.    

With this message we want to thank our partners for their unbelievable effort.

Regards

Tom Vitters

FAQ Recycling

What do I do with the my used rockwool?
Are there re-use/recycling opportunities for my used stonewool?
Is Grodan stonewool recyclable?
How is used stonewool beneficial in composts and other applications?
Where does Grodan offer recycling services?