MÉTODO designs author residential projects in two climates that sit at opposite ends of the thermal spectrum: Colorado mountain locations that see sustained cold from October through April, and Mexico's coastal regions where the thermal challenge is heat, humidity, and ventilation. The design vocabulary carries across. The technical strategy does not — and should not.
The insulation question in each climate reveals a fundamentally different set of priorities.
Colorado Mountain Climate: The Sealed Envelope
In a Colorado mountain residence at 2,000 to 2,500 meters elevation, the thermal strategy is to build a container. The objective is to slow heat loss from the interior to a cold, often dry exterior. Heating energy is expensive to generate and easy to lose. Every gap in the envelope is a loss path.
The correct assembly philosophy:
- Continuous insulation at R-20 to R-30 as an unbroken exterior layer
- Air barrier that seals every penetration and joint to blower door targets below 1.5 ACH50
- Triple-pane glazing with U-values at or below 0.15
- Controlled mechanical ventilation to introduce fresh air without uncontrolled infiltration
In this climate, the more tightly the envelope seals, the better it performs. The insulation thickness is determined by the balance between capital cost and the present value of lifetime heating energy savings.
Stone and concrete in a Colorado mountain house: placed interior to the insulation layer, where they function as thermal mass — absorbing solar gain during the day and releasing it at night. The mass is not asked to insulate; the insulation layer does that. Honest materiality means the concrete and stone do what they do well: store heat and express their weight and texture.
Mexico Coastal Climate: The Open Envelope
On Mexico's Pacific or Caribbean coasts, the thermal strategy inverts. The objective is to prevent heat buildup, promote natural ventilation, and manage high ambient humidity that the structure must not trap.
In a coastal tropical climate:
- High relative humidity (70 to 95 percent) year-round
- Temperatures between 24 and 38 C most of the year
- Cooling is the dominant comfort need
- Air conditioning is optional in a well-designed naturally ventilated house; in a sealed house, it is mandatory
The appropriate envelope strategy:
- Ventilated roof assemblies that purge heat collected in the roof plane — a roof space that breathes constantly is cooler than one that is sealed
- Overhangs and shading that block direct solar radiation from walls and glazing
- Open or operable facades that allow prevailing breezes to pass through the building
- Vapor-open assemblies that allow the structure to breathe — trapping moisture in a humid climate promotes mold, rot, and structural degradation
Insulation in a tropical coastal house serves a different purpose: it reduces radiant heat from a hot roof to the interior ceiling below. Roof insulation — typically at R-15 to R-20 — keeps the sun-heated roof deck from radiating to the living space. Wall insulation is often minimal or absent in open-facade construction.
The Design Language That Travels
What allows a single practice to work competently in both climates is design thinking that is not climate-specific. The section as narrative, the courtyard as spatial organizer, the use of stone and concrete and wood as primary materials — these are not climate strategies. They are design positions.
The courtyard in Colorado becomes a snow-bearing, thermally managed outdoor space with drainage and solar access. The courtyard in a coastal Mexican climate becomes a ventilation engine — air heats and rises from the sun-warmed courtyard floor, drawing cooler air through the surrounding rooms.
The section in Colorado shows sun angles and insulation planes. The section in Mexico shows wind paths, shading geometry, and the ventilated roof cavity. Both sections are the primary design document for their respective project. The method is the same; the content is specific.
Where MÉTODO's Cross-Climate Experience Adds Value
A client who owns property in both Colorado and Mexico — which is more common than it might seem, given the number of Mexican families with mountain retreat properties in both countries — benefits from a design team that has worked seriously in both climates. Not one team for Mexico and another for Colorado, but a single team whose design vocabulary is coherent and whose technical knowledge is climate-specific.
The risk in cross-climate practice is undifferentiated thinking: applying Colorado envelope thinking to a Mexico project (over-sealed, overheated, moisture-trapping) or tropical thinking to a Colorado project (under-insulated, cold, with uncontrolled infiltration). We have seen both. The results are buildings that work against their climate rather than with it.
The Comparison as a Design Tool
In MÉTODO, comparing the two climate strategies side by side is itself a useful design exercise. For a client commissioning an author residential project in one climate, knowing the opposite strategy — seeing clearly what we do not do and why — clarifies the choices for their specific context.
The matrix of options: when the comparison is explicit, the decision is grounded. A client who understands why the Colorado house has a sealed envelope and the coastal house does not makes a different kind of commitment to the design. They understand that the sealed envelope is a designed system, not a default. That understanding becomes part of how they occupy and maintain the building.
Próximos pasos
Whether you are building in the Colorado mountains, on the Mexican coast, or managing both, the insulation and envelope strategy should be the starting point of the technical design — not an afterthought once the floor plan is set.