The Ultimate Guide to Skylights: Why Roof Replacement is the Perfect Time to Upgrade
- Mar 15
- 4 min read
If you are a homeowner in Winchester, Frederick, Clarke, Loudoun, or Warren County, replacing your roof is one of the most significant investments you will make in your home. At Winchester Roofing, a family-owned roofing contractor, we approach every roofing project with a commitment to our core values: Integrity, Craftsmanship, and Value. We want to ensure that every dollar you spend provides lasting protection for generations.
One of the most common questions we get from homeowners during a roof inspection is: "Do I really need to replace my skylights if I'm getting a new roof?"
The short answer is: Yes, in almost all cases, you should replace your skylights when you replace your roof. In this comprehensive guide, we will break down exactly why this is the industry standard, explore the honest benefits and drawbacks of skylights, discuss repair options like flashing kit replacements, and outline the meticulous process we use to install Velux skylights to exact manufacturer specifications.
Why Syncing Your Roof and Skylight Replacement Matters
When we assess a roof at Winchester Roofing, we look at it as a complete, integrated system. A roof isn't just shingles; it is decking, underlayment, ventilation, and penetrations. A skylight is a massive penetration in your roofing system. Here is why leaving an old skylight on a new roof is a risk we strongly advise against:
1. Matching Lifespans
The average architectural asphalt roof can last 25 - 35+ years. The glass and seals on a high-quality skylight have a similar functional lifespan. If your current skylights are 10 years old and you install a new roof system around them, the skylights will inevitably fail long before the roof does.
2. The Flashing Dilemma
Skylights rarely leak through the glass; they leak around the edges where the unit meets the roof deck. This connection is protected by a flashing kit. When you tear off old shingles, the old flashing is disturbed, bent, and compromised. Reusing old, fatigued metal flashing with brand new shingles is a recipe for a leak.
3. Cost and Efficiency
Replacing a skylight while the roof is already stripped down to the plywood decking is a straightforward, efficient process. If you wait until the skylight fails five years after your new roof is installed, a crew has to carefully remove your new shingles, replace the unit, and try to patch the roof back together. You will pay significantly more in labor by separating the two projects.
4. Protecting Your Warranties
To provide you with the best manufacturer warranties, strict installation guidelines must be followed. Modifying an old skylight to fit a new roofing system often voids these guarantees. Installing a new Velux unit with its proprietary flashing system ensures you are fully covered by Velux's "No Leak" warranty.
The Honest Pros and Cons of Skylights
We believe in proactive, open communication. Skylights are beautiful additions, but they require proper planning. Here is an honest look at what to expect.
Benefits of Skylights
Abundant Natural Light: Skylights bring in up to 30% more natural light than vertical windows, transforming dark spaces.
Energy Efficiency: Modern Velux skylights utilize advanced Low-E3 glass to naturally warm your home in the winter, potentially reducing heating costs.
Improved Ventilation: Venting skylights can be opened to release hot air that naturally rises, creating a cooling draft during Virginia's humid summers.
Aesthetic Value: A well-placed skylight makes spaces look larger and boosts your home's architectural appeal.
Drawbacks of Skylights
Potential for Leaks (If Poorly Installed): A poorly installed skylight by an inexperienced contractor will leak. Choosing a Master Craftsman who follows Velux specifications is non-negotiable.
Heat Gain: Older, single-pane units can make rooms uncomfortably hot. Upgrading to modern Velux units with specialized coatings mitigates this issue.
Maintenance Needs: Debris can accumulate around the flashing in heavily wooded areas, requiring periodic clearing to ensure water flows freely.
Skylight Repairs vs. Full Replacement
Sometimes, you aren't ready for a full roof replacement, but you have a leaking skylight. What then?
When Flashing Kit Replacement Makes Sense
If your skylight glass is clear, the internal seals are intact, and the unit is under 10 years old, the leak is likely due to failing flashing. A Winchester Roofing technician can carefully remove the surrounding shingles, strip away the old step-flashing, apply high-quality ice and water shield directly to the roof deck, and install a brand-new flashing kit.
When Full Replacement is Required
If the glass is cracked, the unit is hazy (indicating a blown argon gas seal), or the frame is rotting, a flashing repair is a waste of your money. The only solution that aligns with delivering true value is a complete unit replacement.
The Winchester Roofing Installation Process
Craftsmanship is a non-negotiable standard for us. We exclusively install Velux skylights because they engineer the highest quality products on the market. Here is how we ensure a flawless, watertight installation:
Thorough Deck Verification: We inspect the roof deck to ensure the wood is structurally sound, free of rot, and meets the minimum requirement.
Custom Curbing: We ensure the wooden curb is perfectly square, level, and structurally secure for curb-mounted units.
Ice and Water Shield Application: We wrap the entire perimeter of the skylight opening with a premium, self-adhering waterproof underlayment.
Setting the Skylight: The Velux unit is carefully set into place and secured using the manufacturer-provided hardware.
Precision Flashing Installation: We interweave Velux's engineered step-flashing pieces with every single course of your new shingles for maximum water shedding.
Trust Your Home to the Experts
A skylight is a wonderful feature when installed with precision and care. If your roof is nearing the end of its life, do not leave your old skylights behind to become tomorrow's headache.
At Winchester Roofing, we treat every home like it belongs to our own family. We are not high-pressure salespeople; we are educators and craftsmen dedicated to protecting your home. If you are considering a roof replacement in Winchester or the surrounding counties, contact us today for an honest, expert inspection.
Winchester Roofing—Lasting Protection for Generations.
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