Tips for constructing strong hurricane roofs

Hurricane Beryl caused significant damage to homes across Jamaica, exposing weaknesses in construction and design. Roofs were particularly vulnerable, with many being ripped off due to inadequate anchoring, improper rafter spacing, and the use of thin zinc sheeting. Flat and steep roofs suffered from uplift and increased wind stress, respectively. Wall plates failed in several homes, leading to entire roofs being lifted off, while the lack of sarking left interiors exposed. Overhangs without boxed eaves contributed to wind damage. The storm highlighted the need for more resilient construction practices and regular maintenance to better withstand future hurricanes. Here are some tips to secure your home and the lives of your family on a budget on the arrival of the next hurricane:

1. Optimal Roof Angle:
   • 30 degrees is best for wind resistance and water runoff.
   • Under 20 degrees: Vulnerable to uplift.
   • Over 35 degrees: Prone to increased wind force and stress.
2. Roof Spans:
   • Prefer multiple smaller roofs over one large roof to improve contingency.
3. Roof Lifting and Wall Plate Failure:
   • Ensure proper anchoring to prevent roof lift-off.
   • Distribute J-bolts adequately to prevent wall plate failure.
4. Rafter and Batten Spacing:
   • Use 18-24” (450-600mm) rafter spacing.
   • Rafters should be at least 2×6” (50x150mm).
   • Use hurricane straps or proper nailing for increased wind resistance.
5. Sarking and Undersupport:
   • Sarking adds structural support and reduces vibrations.
   • It also provides an extra protective layer against elements if roof sheets are dislodged.
6. Ridge and End Caps:
   • Use thicker gauge capping with reduced screw spacing for better protection.
7. Zinc Sheeting and Wall Plates:
   • Use more screw/fixing points at eaves, especially with thinner sheeting.
   • Inspect wooden wall plates every 10 years to prevent deterioration.
8. Overhangs and Design Functionality:
   • Shorter overhangs reduce wind uplift.
   • Boxed eaves with soffits create a smoother surface, reducing wind friction.
9. Use Slab:
   • Incorporate a slab in a service area as a panic zone for safety during storms.
10. Maintenance:

• Regular inspections for wear, rot, rust, and termites are crucial for roof longevity.

These guidelines are essential for ensuring the durability and safety of a roof, particularly in areas prone to extreme weather conditions. Many persons were assisted by the government with building supplies and other materials which were well needed. However, for some it was not enough to cover the extent of the damage they suffered and the inconvenience they experienced. Put these measures in place to brave the storm.