How Long Does Roofing Felt Last Under Tiles?

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How Long Does Roofing Felt Last Under Tiles?

Roofing felt is an essential component of a well-built roof structure, providing an additional layer of protection against moisture and potential roof leaks. When installing tiles, roofing felt serves as an important barrier between the tiles and the roof deck. However, like any construction material, it has a limited lifespan. In this blog post, we will explore the factors that impact the longevity of roofing felt under tiles and discuss how long it typically lasts.

Factors Affecting the Lifespan of Roofing Felt:

1. Quality of the Roofing Felt:
   The quality of the roofing felt plays a significant role in its durability. Higher-quality materials tend to have a longer lifespan compared to lower-grade options. It is important to choose roofing felt that is specifically designed for use under tiles to ensure optimal performance and longevity.
2. Climate and Weather Conditions:
   The climate and weather conditions in the area where the roof is located greatly impact the lifespan of roofing felt. Exposure to extreme temperatures, prolonged exposure to sunlight, heavy rainfall, snow, or high winds can all accelerate the deterioration of the felt.
3. Installation:
   Proper installation is crucial for the longevity of roofing felt. If it is not installed correctly, such as not being securely fastened or having gaps, it can be susceptible to damage. It is recommended to hire professional roofers to install the felt to ensure proper placement and fastening.

Average Lifespan of Roofing Felt Under Tiles:
Roofing felt’s lifespan can vary, depending on the factors mentioned above, making it challenging to provide a specific timeframe. As a general guideline, high-quality roofing felt can typically last between 15 to 30 years under tiles. However, in more extreme weather conditions, the lifespan may be shorter.

Signs of Roofing Felt Deterioration:

1. Appearance of Blisters or Bubbles:
   If you notice blisters or bubbles on the surface of the roofing felt, it is a sign of potential damage or moisture intrusion. This should be inspected and repaired promptly to prevent further deterioration.
2. Tear or Breakage:
   Visible tears or breaks in the roofing felt indicate that it has lost its protective capabilities. This can lead to leaks and should be addressed immediately.
3. Moisture Stains on Ceilings or Walls:
   If you notice moisture stains on interior ceilings or walls, it could be an indication that the roofing felt has been compromised and needs attention. It is advisable to inspect the roof and the underlying felt for potential damage.

Roofing felt is an essential component underneath tiles, providing an extra layer of protection and extending the lifespan of the roof. While the typical lifespan of roofing felt under tiles may range from 15 to 30 years, various factors, such as quality, climate, and installation, can influence its durability. Regular inspection and maintenance of the roofing felt are key to identifying any signs of damage and addressing them promptly to ensure the continued integrity of the roof structure.