If you’ve recently noticed raised shingles or small bumps on your roof, you might be seeing a common issue known as roofing nail pops. While they may seem minor at first, nail pops can lead to bigger roofing problems if left unchecked. In this post, we’ll cover:
What Are Roof Nail Pops?
Roofing nail pops occur when the nails that hold shingles in place start to push upward, causing the shingle above to lift or bulge. You may see exposed nail heads sticking out of your shingles or feel uneven spots when walking on your roof (though we never recommend homeowners walk their roof—leave that to the pros!).
Why Do Roofing Nail Pops Happen?
Several factors can cause roofing nails to pop:
Improper Installation
One of the most common causes of roofing nail pops is improper installation during the initial roofing job. If the nails are not driven correctly, it can compromise the stability of the shingles over time.
Thermal Expansion and Contraction
Your roof expands in the heat and contracts in the cold. This movement can gradually loosen nails, especially in regions with significant seasonal temperature changes. Quality of materials, roof ventilation, and insulation can all play a role in nail pops during temperature changes too.
Moisture in the Roof Deck
The roof deck (sometimes called the roof sheathing) is the flat, solid surface that forms the foundation of your roof. If your roof decking absorbs moisture, it can swell and contract, pushing nails upward. This is especially common when decking isn’t properly ventilated or sealed.
Aging Materials
Over time, shingles and nails naturally degrade. As the materials age and lose grip, nails may start to back out of the deck.
How Nail Pops Affect Your Roof and Its Lifespan
While a single nail pop might not seem like an emergency, it compromises your roof in several ways:
- Water Intrusion: Raised shingles create entry points for rain and melting snow, leading to potential leaks.
- Shingle Damage: As shingles lift and move, they can crack or tear, reducing their protective capability.
- Accelerated Wear: Open nail holes and raised shingles expose the underlayment and decking to UV rays and moisture, accelerating deterioration.
- Reduced Lifespan: Left unrepaired, even small issues like nail pops can shorten the lifespan of your roof by allowing ongoing water damage.
The good news: nail pops are fixable with proper attention.
Here’s what should be done:
Inspection
Have a professional roofer inspect your roof to assess the extent of the nail pops and check for associated damage.
Repair Process
The standard repair process for roofing nail pops begins with carefully removing the affected shingles to access the raised nails. These nails are then removed, and new nails or screws are installed, ensuring they are properly driven into solid, sound roof decking to provide a secure hold. After securing the fasteners, the shingles are either replaced with new ones or resealed to restore the roof’s protective barrier and maintain its integrity. For a small section with just a few nail pops, a professional roofer can usually complete the repair in a few hours—often within half a day. Larger roofs with multiple affected areas may require a full day or more.
Preventative Maintenance
To minimize future issues:
- Ensure your attic is well-ventilated to control moisture and temperature swings.
- Use quality fasteners and proper installation techniques.
- Schedule regular roof inspections to catch minor issues before they escalate.
Final Thoughts
Roofing nail pops may start as a small nuisance but can lead to costly damage if ignored. Regular roof inspections and timely repairs can preserve your roof’s integrity and extend its lifespan.
If you suspect nail pops or any other roof issue, don’t wait. Contact Innovative Roofing & Siding for a professional inspection and peace of mind. We’re here to help keep your home protected—season after season.