FLAT ROOFING

Traditional Felt Systems

Modern torch-on felt represents a significant advancement over older three-layer systems. High-performance polymer-modified bitumen delivers 15-20 year lifespans with proper installation.

Advantages:

• Established technology with proven track record
• Cost-effective initial installation
• Suitable for most commercial and domestic applications
• Straightforward repairs when required

Considerations:

• Shorter lifespan compared to EPDM alternatives
• UV degradation requires surface protection
• Heat application requires skilled operatives
• Regular inspection recommended

EPDM Rubber Systems

Ethylene Propylene Diene Monomer (EPDM) rubber membranes offer exceptional durability with 40-50 year expected lifespans.

Advantages:

• Superior UV and ozone resistance
• Minimal maintenance requirements
• Flame-free installation for safety
• Excellent flexibility in temperature extremes
• Environmentally sustainable and recyclable

Considerations:

• Higher initial investment
• Requires skilled installation for optimal performance
• Puncture resistance depends on substrate preparation

Liquid Waterproofing

Cold-applied liquid systems create seamless membranes ideal for complex roof shapes, unusual details and overlay applications.

Advantages:

• Seamless application eliminates joint weakness
• Excellent adhesion to multiple substrates
• Ideal for refurbishment over existing membranes
• Accommodates complex shapes and penetrations
• Quick installation with minimal disruption

Flat roof maintenance and longevity

Extending flat roof lifespan requires:

Regular inspection – Annual checks identify minor issues before they escalate into expensive repairs or interior damage.

Drainage maintenance – Keep outlets, gutters and downpipes clear. Standing water accelerates membrane deterioration through the “lens effect” where solar heat concentrates in water pools.

Surface protection – Light-coloured finishes reflect UV radiation, extending membrane life. Solar-reflective coatings significantly improve performance.

Prompt repairs – Address minor defects quickly. Small splits or blisters expand rapidly if left untreated.

Professional assessment – Difficult-to-access roofs benefit from professional inspection equipment including moisture meters and thermal imaging.

Maintenance & Longevity

Flat roof replacement or major repairs typically require Building Regulations approval when:

• Replacing more than 50% of the roof area
• Modifying structural elements
• Upgrading thermal insulation

Current regulations mandate improved thermal performance for replacement roofs. We ensure installations meet or exceed U-value requirements while maintaining proper ventilation and condensation control.

We can advise on whether your project requires Building Control notification and provide all necessary documentation for compliance certification.