How deep should timber palisades be set in the ground?

The embedment depth depends on the palisade height and whether it serves a structural (retaining) function. For decorative edging up to 300 mm above ground, minimum 200 mm embedment is sufficient.

The embedment depth depends on the palisade height and whether it serves a structural (retaining) function. For decorative edging up to 300 mm above ground, minimum 200 mm embedment is sufficient. For freestanding palisades 600–1200 mm above ground, embed one-third of total length (e.g., 400 mm below ground for 800 mm above). For retaining palisades holding back soil, embed minimum 50% of total length plus 150 mm below the retained soil level. All ground-contact timber must be UC4 treated or naturally durable class 1–2.

Why this matters

This question relates to Palisade & Landscape Timber: Design Guide for Garden Architects, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ Palisade & Landscape Timber: Design Guide for Garden Architects

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About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia.