Roofing felt lasts between 15 and 20 years on most homes. This material sits under your shingles and protects your roof deck from water and weather. However, the exact lifespan depends on your climate, how well your roof is installed, and how much sun and moisture it gets. Most homeowners should plan to replace their felt when they replace their shingles. According to industry data, the average roof lifespan ranges from 25 to 50 years, but the felt underneath can wear out sooner. Let’s explore what affects how long your roofing felt lasts.
What Is Roofing Felt?
Roofing felt is a layer of material that goes under your shingles. It creates a barrier between your roof deck and the shingles above.
This material comes in two main types: organic felt and fiberglass felt. Organic felt is made from paper, while fiberglass felt is made from glass fibers. Fiberglass felt lasts longer and costs less money. Most new roofs use fiberglass felt today.
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How Long Does Roofing Felt Last?
Roofing felt typically lasts 15 to 20 years under normal conditions. It breaks down faster in hot climates and areas with lots of rain. In cold climates, felt can last a bit longer.
According to RubyHome, asphalt architectural shingles last about 30 years, but the felt underneath may need replacement before the shingles do. The felt ages faster because it gets wet from rain and heated by the sun.
What Damages Roofing Felt?
Several things can break down roofing felt faster than expected.
- Direct sunlight exposure
- Water and moisture
- High heat and humidity
- Poor ventilation in your attic
- Heavy foot traffic during installation
- Tree branches and debris
According to industry data, ventilation is critical for roof longevity. Poor ventilation traps heat and moisture in your attic, which causes felt to rot faster. Keeping gutters clean and removing tree branches also helps felt last longer.
Signs Your Roofing Felt Needs Replacement
You should replace roofing felt if you see water stains inside your attic. Dark spots or wet areas mean water is leaking through. Soft or spongy spots on your roof deck also signal failed felt.
A professional roofer can inspect your felt during a routine roof checkup. According to industry data, 33% of homeowners replace their roofs due to leaking. Early felt replacement can prevent major water damage. According to RubyHome, the average roof replacement cost ranges from $5,868 to $13,217, so catching problems early saves money.
| Roofing Material Type | Typical Lifespan |
|---|---|
| Asphalt three-tab shingles | 20 years |
| Asphalt architectural shingles | 30 years |
| Roofing felt (organic) | 15 to 20 years |
| Roofing felt (fiberglass) | 15 to 20 years |
| Metal roofing | 40 to 80 years |
Roofing felt is a hidden hero that protects your home from water damage. While it lasts 15 to 20 years, proper maintenance can help it last longer. Check your attic for leaks, keep your gutters clean, and have a professional inspect your roof every year. When you replace your shingles, always have a roofer check your felt too. Replacing felt when needed prevents costly water damage inside your home.
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Contact a qualified roofing services for expert guidance on roof repair, replacement, or installation.