Understanding When Your Shed Roof or Flat Roof Needs Felt Replacement
Knowing when to replace roof felt can save you from expensive repairs down the line. We recommend regular inspections to catch issues early before they turn into bigger problems.
Visible damage is often the first sign something's wrong. Look for visible cracks running across the surface, blistering that indicates trapped moisture underneath, or tears that expose the roof structure below. These problems let rain through and can lead to water ingress that damages ceilings, insulation and timber.
A professionally installed felt roof replacement typically lasts around 20 to 30 years depending on the specification. If your roof is approaching this age, it's worth getting it checked even if you can't see obvious problems. High-performance torch-on felt membranes have been tested to last beyond 30 years in real-world conditions when properly maintained.
Watch for water damage inside your building. Stains on ceilings, damp patches, or leaks during heavy rain all point to failed roofing felt. The UK's varied weather conditions have a direct impact on the long-term performance of roofing felt, with our mix of rain, wind, and UV radiation gradually wearing down even the best materials.










