In construction, one timeless principle holds true: you build for the environment you live in, not the environment you wish you lived in. Yet, in many tropical islands like Jamaica, there is a growing trend of trying to adopt North American residential construction practices — particularly the heavy reliance on drywall and light framing — in climates that are hot, humid, and hurricane-prone.
This approach has serious consequences. As the devastating experience of Hurricane Melissa in October 2025 demonstrated, houses built with weak or non-structural materials can fail catastrophically. This real-world example, captured in videos of homes in Jamaica built primarily with drywall, shows these structures literally blown away or rendered uninhabitable and repairable in extreme weather.
The lesson is simple: if you don’t live in Rome, don’t do like the Romans do. If you’re living in the Caribbean, your building methods must reflect the local realities: extreme winds, humidity, salt-laden air, and the possibility of flooding.
The Drywall vs. Concrete Debate
To understand why concrete blocks remain the preferred material in tropical islands, it helps to compare drywall and concrete in terms of durability, safety, and comfort.
Drywall Construction: The North American Model
Drywall, or gypsum board, is widely used in North America for interior walls. It is lightweight, easy to install, and inexpensive, which explains its popularity. However, in hot and humid climates, drywall faces severe limitations:
- Moisture Vulnerability
- Gypsum board absorbs water easily. In tropical climates with constant humidity or heavy rain, drywall can sag, swell, or crumble. Mold and mildew growth are almost inevitable.
- Wind Resistance
- Drywall is non-structural. If not reinforced with strong framing or additional bracing, it offers virtually no resistance to hurricane-force winds. Even when walls remain upright, interior finishes are often destroyed.
- Fire Resistance
- Drywall contains gypsum, which has some fire-retardant properties. It can delay flame spread slightly, but in real-world fires, drywall offers minimal protection compared to concrete. Homes built largely of drywall are still extremely vulnerable.
- Maintenance Challenges
- In humid climates, even minor leaks or condensation can quickly lead to expensive repairs. Paint, joint compound, and other finishes fail faster than in temperate climates.
- Thermal Comfort
- Drywall provides minimal thermal mass, meaning interiors heat up quickly in tropical sun. Without substantial insulation, air conditioning costs can soar.
Bottom line: drywall is fast and cheap, but it is poorly suited for hurricane-prone islands like Jamaica, where wind, moisture, and heat dominate daily life.
Concrete Block Construction: The Caribbean Standard
Concrete blocks (CMUs – Concrete Masonry Units) are the backbone of most Caribbean homes. They are heavier, more labor-intensive, and more expensive initially than drywall, but they offer unmatched resilience:
- Wind and Storm Resistance
- Solid concrete walls can withstand hurricane-force winds. Unlike drywall, they maintain structural integrity under extreme conditions, protecting both lives and property.
- Fire Resistance
- Concrete does not burn. In house fires, walls remain standing, containing flames and reducing the spread of fire — a stark contrast to drywall-based structures.
- Moisture and Pest Resistance
- Concrete is not food for termites and does not rot. With proper waterproofing, block homes resist mold, mildew, and water damage far better than drywall structures.
- Thermal Mass
- Concrete walls absorb heat during the day and release it slowly at night. Interiors stay cooler, reducing reliance on air conditioning.
- Sound Insulation
- Heavy block walls provide excellent noise reduction, making interiors quieter even in busy or stormy environments.
- Longevity
- Concrete homes can last 75–100+ years with minimal structural maintenance. Drywall homes often need major repairs within decades in tropical climates.
Disadvantages of Concrete Blocks:
- Higher Initial Cost: Labor and materials are more expensive. Foundations must support heavier walls.
- Insulation Required: Concrete alone is a poor insulator; additional layers are needed in cooler climates or to improve comfort.
- Less Flexibility: Modifying or renovating block walls is more difficult than drywall. Running wiring and plumbing requires careful planning.
- Appearance: Blocks need plastering, paint, or decorative finishes to achieve an attractive interior.
Lessons from Hurricane Melissa
Hurricane Melissa, a Category 5 storm that hit Jamaica in October 2025, was a devastating reminder of the risks associated with improper construction. Winds exceeding 180 mph, heavy rain, and storm surge destroyed or heavily damaged many homes.
Real-world evidence shows:
- Homes built with lightweight framing and drywall were blown apart, leaving residents displaced.
- Concrete block homes largely survived structurally, even if interiors required repair.
- Water infiltration, wind load, and poor anchoring caused the majority of failures in non-concrete homes.
This aligns with the principle: build for your environment. Attempting to apply North American building techniques in the Caribbean without modifications is both risky and shortsighted.
“If You Don’t Live in Rome…”: The Guiding Principle
The ancient saying — “When in Rome, do as the Romans do” — makes sense in cultural and practical contexts. But the reverse is equally true: if you don’t live in Rome, don’t do like the Romans do.
- North American homes are optimized for temperate climates: occasional snow, moderate wind, low to moderate humidity. Drywall and wood framing work there because conditions rarely overwhelm them.
- The Caribbean faces hurricanes, tropical heat, high humidity, salt air, and flooding. Homes must be built with durable materials and robust engineering.
- Blindly following North American practices may save money upfront, but it risks life, property, and long-term costs.
Practical Recommendations for Caribbean Builders
- Use Concrete or Reinforced Masonry for Structural Walls
- At minimum, exterior walls should be CMUs or reinforced concrete. Interior walls can be drywall if properly supported, but this is secondary.
- Design for Wind Loads
- Roofs, walls, and foundations must be tied together and engineered to resist hurricane-force winds. Avoid unbraced drywall partitions in load-bearing situations.
- Moisture Management
- Incorporate waterproofing, raised foundations, and proper drainage. Avoid drywall in areas prone to flooding or direct water contact.
- Thermal and Acoustic Comfort
- Leverage the thermal mass of concrete. Add insulation where necessary. Interior drywall can be used sparingly, with concrete block or plastered walls as primary structure.
- Follow Local Codes
- Even if local codes are below North American standards, they are optimized for local weather. Using North American standards as a baseline is fine, but ignoring local context is dangerous.
At The End of The Day
The desire to emulate North American construction is understandable: drywall is cheap, quick, and familiar. But as recent hurricanes and real-world failures show, one cannot transplant building practices from one environment to another without considering local climate, weather hazards, and materials performance.
In hurricane-prone Caribbean islands, concrete block construction is not just traditional; it is proven, resilient, and life-saving. Drywall may have a role for interior partitions, but using it as the primary construction material is a recipe for disaster.
The moral: “If you don’t live in Rome, don’t do like the Romans do.” Build smart, build strong, and build for your environment — not for someone else’s.
