Flat roofs are a popular choice for commercial and residential buildings due to their cost-effectiveness, versatility, and aesthetic appeal. However, like any roofing system, flat roofs require regular maintenance and occasional repairs to ensure their longevity and performance. In this guide, we'll explore essential maintenance tasks and repair techniques to help you keep your flat roof in optimal condition.

1. Regular Inspections

Regular inspections are critical for identifying potential issues early and preventing costly repairs down the line. Inspect your flat roof at least twice a year, preferably in the spring and fall, and after severe weather events. Here's what to look for during inspections:

  • Signs of damage: Check for cracks, blisters, punctures, tears, or signs of wear and tear on the roofing membrane.
  • Ponding water: Look for areas where water is pooling on the roof surface, as prolonged ponding water can lead to leaks and structural damage.
  • Roof drains and gutters: Ensure that roof drains and gutters are clear of debris and functioning correctly to prevent water build-up.
  • Flashings and seals: Inspect flashings around roof penetrations (such as vents, HVAC units, and skylights) and seals around edges and seams for signs of deterioration or separation.

2. Cleaning

Regular cleaning is essential for removing debris, dirt, and organic growth that can accumulate on the roof surface and clog drains. Use a soft-bristle brush or broom to sweep debris off the roof, and rinse the surface with a garden hose to remove dirt and grime. Avoid using pressure washers, as they can damage the roofing membrane.

3. Repairing Leaks

Promptly repair any leaks to prevent water damage and mould growth inside the building. Here's how to repair leaks on a flat roof:

  • Identify the source of the leak by inspecting the interior of the building for water stains or dampness.
  • Clean the area around the leak and remove any debris or loose roofing material.
  • Apply a patch or sealant to the damaged area using a roofing cement or sealant compatible with the roofing membrane.
  • Press the patch firmly onto the surface and smooth out any wrinkles or air bubbles.
  • Allow the patch to cure according to the manufacturer's instructions before exposing it to foot traffic or water.

4. Professional Maintenance and Repairs:

While many maintenance tasks can be performed by building owners or maintenance staff, some repairs may require the expertise of professional roofing contractors - like us at St Helen's Flat Roofing.

If you're unsure about the extent of damage or how to properly repair a leak, it's best to consult with a qualified roofing professional.


At St Helen's Flat Roofing, we offer professional roofing services tailored to your needs and budget. Whether you choose rubber or felt roofing, our experienced team can provide expert installation, maintenance, and repair services to ensure the longevity and performance of your roof.

Contact us today to discuss your roofing needs and schedule a consultation with our team of experts on 01744 817612.