Different Flat Roof Coverings Compared For Storm Resistance

Different Flat Roof Coverings Compared For Storm Resistance

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
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