The Pros and Cons of Roofing Over an Old Roof

When it comes to roofing, one question often comes up: Can I just slap a new roof over the old one? In Savannah, GA, where the humidity likes to party and the sun shines a little too bright sometimes, it’s important to know what you're getting into.

Can You Roof Over an Old Roof?

The short answer is yes, you can put a new roof over an old one. Building codes in many places, including Savannah, allow homeowners to install a new roof over an existing one, provided certain conditions are met. You can't just pile roof on top of roof like you’re building a hearty lasagna.

What’s the Catch?

While it might seem convenient and cost-effective, roofing over an old roof isn’t always the best option. Here are a few things to consider:

• Weight Issues: An additional layer can add extra weight that your home may not be designed to support. If your roof is already nearing its weight limit, you could be courting disaster.
• Water Damage: If your old roof has leaks or damage, simply covering it up will not fix the underlying issues. You could end up with mold and mildew, and trust me, you don’t want to invite that into your Savannah home.
• Warranty Woes: Many roofing warranties require a tear-off for coverage. If you bypass this step, you might be left holding the bag if something goes wrong.
• Inspection Challenges: If you roof over, it may hide problems that need attention. Inspectors can’t see what’s beneath the surface, and you might miss crucial repairs.

When Is It Okay to Roof Over?

All that being said, there are some circumstances where adding a new layer makes sense:

• Two Layers Max: Building codes often allow a maximum of two roofing layers. If you’re already at this limit, it’s time for a tear-off.
• Good Condition: If your existing roof is in good shape with no signs of leaks, sagging, or damage, it may be a candidate for a new layer.
• Cost Savings: If you’re on a tight budget and your roof is structurally sound, roofing over can save you some cash in the short term.

The Bottom Line

While it’s technically possible to put a new roof over an old one, it’s not always advisable. Think of it like putting a new coat of paint on a rusty fence: it might look good for a while, but the rust will eventually show through.

If you’re unsure about the condition of your roof or whether roofing over is the right choice for you, it’s best to consult with a roofing professional. At Rain Dog Roofing of Savannah, we offer free roof inspections to help you make the best decision for your home.

Ready to talk about your roof? Give us a call at (912) 351-8326 and let’s make sure your Savannah home stays safe and sound!