Roof Repair or Replacement? How to Know.

In this video Heriberto Garcia Jr from Carpenters Touch goes over 5 signs that it might be time to replace your roof. He also offers other explanations that should be investigated.

5 Signs You Need a Roof Replacement

These are the five signs that you need a roof replacement before it’s too late.

1. Missing Shingles

If you’re walking around your home and notice missing shingles, that’s a clear warning sign.

This is often caused by wind damage, hail damage, or improper installation.

If shingles were nailed incorrectly, they can easily come loose and slide off over time.

2. Roof Leaks Inside Your Home

If you see water leaking inside your house during rain, it’s likely a roofing issue.

However, some leaks can come from plumbing or HVAC systems, so it’s important to confirm the source.

If the leak is consistent during rainfall, it’s often a sign that your roof may need replacement.

3. Sagging Roof Decking

If your roof appears to be sagging, especially in the middle, this is a serious structural warning sign.

This is often caused by excess weight from snow, multiple roofing layers, or prolonged water damage.

A sagging roof typically means it’s time for a replacement, not just a repair.

4. Granules in Your Gutters

If you notice a buildup of shingle granules in your gutters, your roof may be deteriorating.

Granules protect the asphalt layer from sun, rain, and weather damage.

Once they wear off, shingles become brittle, crack, and fail much faster.

5. Algae or Moss Growth

If your roof looks like it has moss, algae, or even “grass” growing on it, that’s a major sign of aging.

This typically means the roof is past its expected lifespan and losing its protective qualities.

Final Thoughts

If you’re seeing one or more of these signs, it’s time to have your roof inspected.

In many cases, these issues indicate that a full roof replacement may be necessary rather than a simple repair.

When Should You Call a Roofing Professional?

If you notice multiple signs like leaks, sagging, or widespread shingle damage, it’s best to have a professional inspection as soon as possible.

Early evaluation can prevent more expensive structural damage.

FAQ: Roof Replacement Signs

How do I know if I need a roof replacement or just a repair?

If damage is isolated, a repair may work. But widespread issues like sagging, leaks, or granule loss usually mean replacement is needed.

How long does a roof typically last?

Most asphalt shingle roofs last 20–30 years, depending on installation quality and weather conditions.

Are missing shingles always a big problem?

Yes. Missing shingles expose your roof to water damage and can lead to leaks if not addressed quickly.

What causes granule loss on shingles?

Granule loss is caused by aging, weather exposure, hail damage, and poor-quality materials.

Is moss or algae on a roof dangerous?

Yes. It traps moisture and accelerates roof deterioration, often indicating the roof is near the end of its life.

If this page raises concerns about your roof, continue with 4 clear signs it is time to act for a second replacement checklist, how to replace a damaged shingle if the problem appears isolated, and 3-tab vs. architectural shingles if you are already thinking about replacement materials.