Roof Assessment Tool

What to Do After Taking the Quiz

Your quiz result is a starting point, not a diagnosis. Only a licensed roofing contractor can give you a definitive assessment of your roof's condition. But understanding the signs that typically lead to a roof replacement — and what that process involves — puts you in a much stronger position when it's time to have that conversation.

What a Roof Replacement Actually Involves

A proper roof replacement is more than swapping out old shingles for new ones. A complete job typically includes:

• Tear-off: Removing all existing shingles down to the roof deck so the wood can be inspected and any damaged sections replaced
• Drip edge: Installing or replacing the metal flashing along the eaves and rakes to protect the fascia from water
• Ice and water barrier: Applying a self-adhesive membrane in the most vulnerable areas — valleys, eaves, and around penetrations — to prevent water intrusion and ice dams
• Synthetic underlayment: Covering the entire roof deck with a protective layer beneath the shingles
• Starter shingles: Installing a purpose-made strip along the eaves to create a proper seal at the roof's edge
• Ventilation: Ensuring the attic has adequate intake and exhaust ventilation so heat and moisture don't accumulate and shorten the life of the new roof
• Shingles and ridge cap: Installing shingles to manufacturer specifications, with true hip and ridge shingles at the peak

Companies that skip steps — or simply layer new shingles over old ones without a tear-off — may offer a lower price, but the long-term performance of the roof suffers for it.

How Long Should a Roof Last?

Most asphalt shingle roofs are designed to last between 20 and 30 years, though that range depends heavily on the quality of the original installation, the materials used, and how well the roof has been maintained. A roof that was installed with proper underlayment, adequate ventilation, and quality shingles will consistently outlast one that wasn't — sometimes by a decade or more.

If your roof is approaching the 20-year mark, it's worth having it professionally inspected even if it looks fine from the ground. Many of the issues that ultimately require a full roof replacement — deteriorating underlayment, early wood rot, failing flashing — aren't visible without a closer look.

Signs You May Need a Roof Replacement

Some warning signs are easy to spot. Others take a trained eye. Here are the most common indicators that a roof replacement may be necessary rather than a simple repair:

Age combined with widespread wear. When a roof is past its expected lifespan and showing multiple symptoms at once — curling shingles, granule loss, and minor leaks — repairs tend to be a short-term fix for a whole-system problem. At that point, a roof replacement is often the more cost-effective long-term decision.

Structural issues. Sagging, visible dips along the roofline, or spongy areas on the roof deck signal damage to the underlying structure. These issues can't be addressed by replacing shingles alone.

Repeated leaks. A single leak in a specific area can often be repaired. But if leaks keep appearing in different locations, it typically means the roofing system as a whole is failing.

A second layer of shingles already in place. Many building codes allow up to two layers of shingles on a roof. If your home already has two layers and problems arise, the only option is a full tear-off and roof replacement — there's no room to add another layer, and the underlying materials need to be inspected anyway.

Granule loss. Asphalt shingles shed granules as they age. Heavy granule loss — visible on shingles or collecting in gutters — means the shingles are no longer providing adequate UV protection and are nearing the end of their useful life.

Roof Replacement vs. Roof Repair: How to Tell the Difference

Not every roofing problem requires a full replacement. Isolated damage from a storm, a few missing shingles, or a single leaky area around a flashing joint are often candidates for repair — especially on a relatively young roof.

The decision generally comes down to two factors: the age of the roof and the scope of the damage. A repair on a 10-year-old roof with a single problem area makes sense. The same repair on a 22-year-old roof with widespread wear is often money spent on borrowed time. A qualified contractor should help you understand both options and their likely lifespans before recommending one over the other.

Questions to Ask Before Hiring a Contractor

When you're ready to get estimates for a roof replacement, these questions will help you compare contractors on more than just price:

• Will you do a full tear-off, or install over the existing shingles?
• What underlayment and ice barrier products do you use?
• How do you handle ventilation as part of the replacement?
• Are you a certified installer for the shingle brand you're recommending?
• What does the manufacturer warranty cover, and what does your workmanship warranty cover?
• How do you protect my landscaping and driveway during the job?

A contractor who answers these questions clearly and without hesitation is a good sign. One who deflects or minimizes them is worth a second look.

*This content is for informational purposes only. Roof conditions vary widely. Always consult a licensed roofing professional before making decisions about repair or replacement.*