Skylights are a beautiful way to bring natural light into your home, but when it comes time for a roof replacement, many homeowners ask the same question: Should I replace my skylights at the same time as my roof?
Let’s walk through what you need to know to make a smart, stress-free decision.
Why The Process Matters
Your roof and skylights work together as part of the same weather barrier system. If one fails, it can impact the performance of the other. A leaking skylight can damage your new shingles; likewise, improper reinstallation during roof replacement can shorten the lifespan of an otherwise fine skylight.
How Long Do Skylights Last?
Most skylights have a lifespan of about 15–20 years, depending on the material, climate exposure, and whether they were installed correctly in the first place. Cheaper models or older units can fail even sooner, especially in areas like New Hampshire, where snow, ice, and fluctuating temperatures take a toll.
Common signs a skylight is nearing the end of its life:
- Condensation between panes
- Discoloration or fogging
- Drafts or air leaks
- Cracks in the glass or frame
- Persistent roof leaks near the skylight
Roof Lifespan and Skylight Expectations
If you’ve invested in a quality asphalt shingle system, like the CertainTeed Landmark® Series, you’re likely looking at a roof lifespan of 25 to 30 years or more, depending on the specific product and proper ventilation. These laminated shingles offer multiple layers for added protection, granule retention, and resistance to harsh weather.
So right off the bat, there’s a mismatch, if your skylight is older or nearing the 15-year mark, it likely won’t outlast a brand-new roof.
The Hidden Cost of Waiting
At first glance, it might seem cheaper to just leave the skylight and replace it later. But here’s what often happens:
- Your new roof gets cut into just a few years later to swap out the skylight.
- You pay extra for the rework, more labor, more materials.
- You risk voiding parts of your roofing warranty due to alterations.
- There’s a higher chance of leaks and sealing issues when disrupting a newer roof system.
And if that skylight fails unexpectedly? Water damage from a leak can mean rotted decking, insulation damage, or even mold, costs that go way beyond just replacing the window.
When You Should Replace Your Skylight with the Roof
- Your skylight is over 10–15 years old
- It shows signs of wear or minor leaks
- You want peace of mind and warranty continuity
- You’re switching roofing materials or slope
- You’re upgrading to more energy-efficient glass
Replacing both together ensures all components are installed, sealed, and warranted at the same time, which adds up to long-term savings and better protection.
What If My Skylight is Still in Good Shape?
If it’s newer, high-quality, and professionally installed? You might be okay leaving it, but at a minimum, you should:
- Have it fully inspected by your roofing contractor.
- Replace the flashing kit, which is where many leaks start.
- Budget for the possibility of replacement if signs of aging show during tear-off.
At Conde, we often advise homeowners on a case-by-case basis. We’ll inspect the skylight during our quote process and walk you through the pros and cons based on your specific home, roof pitch, and skylight model.
You Should Replace Them Simultaneously When Possible
It’s almost always more cost-effective, and less risky, to replace skylights when you’re already replacing your roof. You get a cleaner, more watertight installation and avoid disturbing your new roofing system down the road.
And let’s be honest, if you’ve already got the ladders out, the shingles torn off, and the crew on-site, why not finish the job right?
Thinking About a New Roof in NH or MA?
Whether you’re dealing with an aging skylight, storm damage, or just tired of looking at curling shingles, Conde Roofing & Construction is here to help. We’ll evaluate your whole roof system, including skylights, and offer straightforward advice that fits your needs and budget.
Call 603-838-7663 or contact us online to book your free inspection. Let’s make sure your home is watertight, energy-efficient, and looking great, top to bottom.
