Expanded polystyrene (EPS) is often seen as single-use — but in Denmark, it’s routinely recycled into new long-life construction materials. A new article from Vestfor, the municipal waste authority for Greater Copenhagen, documents how used EPS packaging is being recovered and transformed into floor insulation products.
This is part of a broader public information campaign on real-world EPS recycling. The process begins at municipal recycling stations, where citizens deliver clean white EPS from electronics, appliances, and other goods. The material is sorted, compacted, and passed on to Danish and European recyclers.
What comes back isn’t packaging. It’s insulation.
According to Vestfor, the recycled EPS is used to manufacture new EPS boards for use in construction — including as a thermal and structural layer beneath concrete floors. These boards help reduce energy loss and improve performance in both residential and commercial buildings.
The original EPS — often from a refrigerator box or flat-screen TV — has become part of the energy infrastructure of a building.
The recycling system
The EPS must be clean and free of contaminants. Food trays and colored foam are excluded. What’s accepted is compacted into high-density blocks and shipped to recyclers equipped to reprocess EPS into feedstock for new manufacturing.
From there, it enters closed-loop applications — often in the form of construction insulation. This is especially significant because it replaces virgin polystyrene and offers a second life span measured in decades, not days.
Why this matters
EPS recycling often goes unnoticed in material flow data — especially when it occurs through local collection schemes and results in products that are not labelled as “recycled content.” Yet this case shows that EPS circularity is happening now: packaging material re-enters the market not as waste, but as infrastructure.
It also demonstrates that with clean collection, densification, and processing partnerships in place, EPS can follow a high-value recovery path — from short-life consumer use to long-life construction utility.
FACT BOX
| Item | Value |
| Location | Greater Copenhagen area, Denmark |
| System type | Municipal drop-off, densification, recycling |
| Collection sites | Local recycling stations (Vestfor network) |
| Material accepted | Clean white EPS packaging |
| End use | Recycled into EPS insulation (e.g., flooring) |
| Operator | Vestfor (municipal waste utility) |
Source:
“Flamingo bliver til gulvisolering,” Vestfor.dk, April 2024
https://vestfor.dk/bliv-klogere/nyheder/nyhedsoverblik/flamingo-gulvisolering
