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Design for Disassembly (DfD) is a product design approach in which products are intentionally engineered to be taken apart easily, using standard tools and straightforward methods. It is one of the most practical ways to improve a product’s environmental performance — not only by enabling better recycling at end-of-life, but also by extending the product’s usable lifespan through easier repair.

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What DfD means in practice

A product designed for disassembly can be separated into its individual materials and components without damaging them. This has two direct benefits:

Better recycling

Individual materials can be sorted and sent to appropriate recycling streams. Mixed or inseparable materials are far more likely to end up as lower-quality recycled output (downcycling) or in landfill.

Easier repair

When a single component fails, it can be replaced without discarding the entire product. This extends product lifespan and reduces the need for new production.

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The core principle: screw, don’t glue

The most widely cited principle of DfD is the preference for mechanical fasteners over adhesives.
“Screw don’t glue” — this phrase captures the central DfD principle. Screws and other mechanical fasteners allow easy separation; adhesives bond materials permanently and block both repair and recycling.
Example: Textiles glued to upholstery foam cannot be separated for recycling — both materials end up as mixed waste. The same sofa assembled with screws allows the textile and foam to be separated and sent to different recycling processes at end-of-life.

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DfD in Målbar

When you add a component to a parent product in Målbar’s LCA tool, you are asked whether that component is designed for disassembly in the context of the assembled product. This matters because DfD status affects end-of-life modelling: components that can be cleanly separated have a higher chance of being recycled, which flows through to your product’s LCA result via the Circular Footprint Formula (CFF).
A component may be internally recyclable but still hinder disassembly if it is glued into the parent product. Målbar asks about DfD at the product level, not just the material level, to capture this distinction.

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Designing for disassembly from the start

DfD decisions are most effective when made early in the product design process. Retrofitting disassembly into an existing design is significantly harder than building it in from the beginning.
Review your fastening and joining methods at the design stage. Anywhere you use adhesive, ask whether a mechanical alternative is feasible. The environmental payoff in both recyclability and repairability is typically significant.

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Download the illustration

Design for Disassembly illustration (PDF)

Download the Målbar Academy visual explainer for Design for Disassembly.