Why Your Old Underlayment Should Be Replaced

When considering roof replacement or repair, it’s crucial to understand the significance of properly addressing each layer of your roofing system, including the underlayment. At Earl W. Johnston Roofing, we’ve seen firsthand the difference between a roof with fresh underlayment and one that retains its old, potentially compromised layers. This blog will delve into why replacing the old underlayment is not only recommended but necessary for the longevity and effectiveness of your roofing system.

The Role of Underlayment in Your Roofing System

The underlayment is a layer of a residential roofing system that serves as a secondary barrier against water infiltration should the outer roofing material fail. Aging and a lack of maintenance can contribute to its deterioration, however, necessitating a thorough inspection to determine the extent of the damage and whether it should also be replaced together with the outer roof covering (i.e. asphalt shingles or metal panels).

Why a Tear-Off Is Ideal During Roof Replacement

Opting for a complete tear-off when replacing your roof offers several benefits:

• Inspection and Repair of the Roof Deck. A tear-off allows us to inspect the roof deck fully and make any necessary repairs. This step is vital to ensure the deck is in good condition to support the new roofing materials.
• Guaranteed Longevity. Installing new underlayment together with the other components provides a fresh start for your roof, ensuring that every part of your roofing system is working together to protect your home.
• Compliance With Warranties. Many manufacturers require a complete tear-off before installing new roofing materials to comply with warranty requirements. This ensures that your new roof is fully covered under warranty.

The Risks of Retaining Old Underlayment

Retaining old underlayment poses several risks to your roofing system:

• Hidden Damage. An old underlayment may mask issues such as rot or mold, which can compromise the integrity of your roofing system. A complete tear-off allows for a thorough inspection.
• Reduced Lifespan. Old, worn-out underlayment will not provide the same level of protection as a new underlayment, potentially reducing the lifespan of the new roofing materials.
• Moisture Issues. In regions with humid climates, moisture control is crucial. Old underlayment may compromise the roof’s ability to adequately prevent moisture infiltration, leading to issues such as mold and water damage.

Ensuring Maximum Protection and Compliance

Replacing old underlayment ensures that your roofing system complies with current local building codes, which are designed to protect your home against the state’s unique weather challenges, including hurricanes and heavy rainfall. Furthermore, new underlayment materials are often more advanced, offering superior protection and energy efficiency benefits.

We’re Just a Call Away!

Replacing old underlayment during a roof replacement is not just a recommendation; it’s a necessity. It ensures the longevity, efficiency, and compliance of your roofing system, providing maximum protection for your home. For residents of Hollywood, FL, working with a reliable contractor like Earl W. Johnston Roofing for your roof replacement project guarantees a superior roofing job that adheres to the highest standards of quality and craftsmanship. Call us at (954) 989-7794, or reach us online for a quote.