Research
At Turnbull Griffin Haesloop, we continuously investigate and develop building strategies that respond to the distinct opportunities and programmatic needs of each site. By exploring a range of structural and material systems, we reinforce and express our design intent—adapting to seismic conditions, coastal environments, wildfire risks, budget constraints, and overarching aesthetic goals.
Beginnings
This spirit of exploration traces back to MLTW’s pioneering use of heavy-timber framing in Condominium 1 at Sea Ranch, where locally sourced fir and redwood served as both structural and architectural elements.
At William Turnbull Associates, we experimented with exposed 2× framing to create a sense of lightness, allowing the structure itself to define and shape interior volumes.
Earthen construction
Our investigations have included earthen construction techniques, utilizing on-site soil sprayed on to a single sided formwork (referred to as pisé) to build structural walls. Over four projects, we have employed this sprayed-earth method.
Long Meadow Ranch
Walls constructed using cave tailings.
Santa Lucia Preserve (Carmel Valley I)
Foundation soils applied in two coats, with a finish layer blended with white cement.
Santa Lucia Preserve (Carmel Valley II)
Composite wall system combining block insulation and a dense inner mass to enhance thermal performance.
Santa Lucia Preserve (Carmel Valley III)
Similar to Carmel Valley II, incorporating a retaining wall with insulation
Fire resistance
As wildfire risks escalate, we continue to research resilient cladding materials that maintain design integrity while improving fire resistance. These include:
Cement panels
Metal cladding and concrete
Shou Sugi Ban siding
Living (green) roofs
These reduce the risk of fire spread due to their lower heat load, while offering environmental benefits such as rainwater absorption, biodiversity support, and carbon sequestration.
