Different flat roof coverings offer varying levels of storm resistance and protection against severe weather conditions. Here's how the main materials compare:
Different flat roof coverings offer varying levels of storm resistance and protection against severe weather conditions.
Some offer superior impact resistance, while others are more resistant to wear & tear. We look at how the main materials compare.
EPDM Rubber
EPDM rubber membranes provide exceptional storm resistance through multiple characteristics:
- Withstands extreme temperature variations while maintaining flexibility down to -45°
- Excellent wind resistance with proper installation
- Superior waterproofing capabilities and resistance to UV radiation
- Lifespan of 30-50 years with proper maintenance
GRP Fibreglass
GRP fibreglass flat roofing offers robust protection against storms:
- Highly durable and resistant to impact damage
- Excellent waterproofing properties with seamless installation
- Strong resistance to corrosion and chemical exposure
- Typical lifespan of 30+ years
Modified Bitumen
This material provides moderate storm protection:
- Can last up to 20 years with proper maintenance
- Good water resistance when properly installed
- Requires regular inspections to prevent leaks
- Multiple layers provide enhanced protection
Torch on Felt Roofing
Traditional torch-on felt roofing offers:
- Strong resistance to water infiltration
- Good fire resistance properties
- Vulnerable to wind damage if not properly maintained or aged
- Heavy weight helps resist wind uplift
PVC Single Ply Membranes
PVC Single-ply membranes provide:
- Good resistance to dirt and debris
- Strong chemical resistance
- Typical lifespan of 20-30 years
- Effective UV protection
Design Considerations
The effectiveness of any flat roof against storms depends on:
- Proper drainage systems to prevent water pooling
- Correct installation and sealing techniques
- Regular maintenance and inspections
- Weighted insulation or gravel ballast for enhanced wind resistance