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GREYSTONE
Contracting Co.
Sunken deck & fire terrace, Nigadoo
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ExteriorWork order No. 0405

Sunken deck & fire terrace

An outdoor room that works in May and still works in October.

Location
Nigadoo
Duration
4 weeks
Completed
2025
Category
Exterior
Sunken deck & fire terrace, Nigadoo, after
Sunken deck & fire terrace, Nigadoo, before
Before
After

Same vantage point, first morning and final day · Drag to compare

The brief

What we were actually asked to fix.

The back yard fell away 900mm in nine metres, so the old deck sat high, felt exposed, and caught every gust off the water. We split it into two levels: dining at door height, and a sunken fire terrace tucked into the slope.

A cedar pergola with a run of warm string lighting overhead gives the lower level a ceiling, which is what makes it feel like a room rather than a platform.

We eat outside from May to Thanksgiving now. The wind just goes over the top of us.
Chantal Arseneau · Nigadoo
Materials
  • Helical piers to 1.5m, engineered layout
  • Pressure-treated frame, hidden fastener cedar deck
  • Dry-laid stone terrace with fire table plinth
  • Cedar pergola, benches with lift-out storage lids
  • Low-voltage stair and rail lighting on a timer
Timeline
Week 1Layout, helical piers, excavation for the terrace
Week 2Framing both levels, stairs, ledger flashing
Week 3Decking, rails, stone terrace, benches
Week 4Pergola, lighting, sealer, yard restoration
What went wrong

The surprise, and what it cost.

Bedrock 900mm down on the north corner meant two piers could not be driven. We switched those to pinned poured footings — a change we caught on day two, priced the same afternoon, and absorbed inside the original schedule.

Outcome

Where it landed.

Bench seating that swallows the cushions and the fire tools for winter, and a lower terrace that stays usable in wind that used to clear the old deck.

Cedar screens closing the lower terrace off the wind
Hidden-fastener decking looking out over the water