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Skylight Installation, Repair & Replacement in Leesburg, VA
Skylight Installation, Repair & Replacement
Yes, Loudoun Roofing installs, replaces and repairs skylights across Leesburg, Loudoun County and nearby Fairfax County. We’re roofers first, and that matters here: a skylight is a hole in your roof. Almost every skylight problem we get called to is the flashing around the unit, not the glass.
Most leaking skylights can be repaired. If yours can, we’ll tell you before anyone talks about a new unit. When replacement does make sense, the best time is during a roof replacement, like the Sterling townhouse where we put in two new skylights along with the new roof.
Most of our skylight work is residential, and we also handle units on commercial and low-slope roofs.
Why Homeowners Add Skylights
A skylight does something no window can: it brings daylight into the middle of a room instead of from one edge. Hallways, stairwells and bathrooms change the most.
What you actually get:
- Daylight where there isn’t any: interior hallways, stairwells, bathrooms and north-facing rooms that stay dim no matter how many lamps you add.
- Less need for lights during the day. The U.S. Department of Energy explains how windows and skylights can cut lighting, heating and cooling costs when they’re placed well.
- Fresh air, if you choose a venting unit. Hot air rises, and an opening skylight is one of the easiest ways to let it out of a room in a Virginia summer.
- A feature buyers notice. A well-placed skylight is the kind of thing people remember about a house.
Skylight Installation Across Northern Virginia
We cover a wider area for skylight work than for general roofing, because many skylight jobs end up with a window company when they’re really a roofing job.
Leesburg and central Loudoun: older homes near downtown, and newer neighborhoods where the builder’s original skylights are now old enough for their seals to fail.
Ashburn, Chantilly and Dulles: many homes built from the late 1990s on still have their first skylights, now 20 years or older. A lot of skylight replacement requests come from here.
Great Falls, McLean and Reston: larger custom homes with several skylights, sun tunnels and complex roof lines around them.
Waterford, Middleburg and western Loudoun: older and historic homes, including the Waterford Historic District, a National Historic Landmark. Here a skylight has to sit in slate or standing seam metal without spoiling the roof. That’s a different job from cutting into asphalt shingles.
Winchester and nearby Frederick County: west over the Blue Ridge, we install, replace and repair skylights here too.
You can check any contractor’s Virginia license for free through the Department of Professional and Occupational Regulation, ours included.
roofing
Our Services
Roofing Services
Our crews are experienced in material handling and installation techniques. Each member is vetted, insured, and committed to getting the job done right the first time.
Our Skylight Installation Process
Every skylight job in Loudoun County follows the same four steps:
- Site visit: we look at your roof type, pitch and the room below to find the best spot.
- Product choice: we recommend the style that fits, usually a Velux fixed or venting unit, deck-mounted or curb-mounted.
- Installation: our crew handles the framing, flashing and sealing, the parts that decide whether a skylight leaks later.
- Cleanup and final check: we clean up and do a full inspection of the work before we leave.
Skylight Repair and Leak Repair
Most leaking skylights don’t need replacing. In our experience, most skylight leaks come down to one of four things, and all of them are repairs:
- Failed flashing: the metal that ties the unit into the roof. It’s the most common cause by far, and the reason a roofer should do this work instead of a window company. It often follows storm damage.
- Worn seals around the glass, which harden and crack with age and sun.
- Condensation mistaken for a leak: water on the inside of the glass on cold mornings is usually a ventilation problem in the room below, not a roof problem. It’s worth ruling out before anyone climbs on the roof.
- Blocked drainage above the unit, where leaves and debris collect on the uphill side and push water under the flashing.
If it turns out to be condensation, we’ll tell you, and we won’t charge you for saying so. For other kinds of leaks, see roof repair.
Skylight Replacement
Replacement makes sense when the unit itself has failed:
- The glass seal has failed and there’s permanent fog between the panes
- The frame is cracked, warped or rotted
- The unit is over 20 years old and keeps leaking
- It’s an older design with poor insulation or no UV protection
- You’re getting a new roof anyway. This is the big one. Replacing a skylight during a roof replacement costs far less than doing it on its own later, because the flashing and the roof around it are already open. An old skylight left under a brand-new roof is a leak waiting to happen.
Openings from older units rarely match today’s sizes, so a replacement often means reframing the opening. We’ll tell you that when we quote, not after the old unit is out.
If you’d like to look into a leak yourself first, see our homeowner’s guide to checking a leaking skylight.
Types of Skylights We Install
The right skylight depends on the room and the roof. We install Velux skylights for homes, including fixed and venting models in deck-mounted and curb-mounted styles, and we can fit them on a new addition, a full roof installation or an existing roof. See our residential roofing and multi-family roofing pages for the roofs they sit in.
1. Fixed Skylights
Fixed skylights don’t open. They suit hallways, stairwells and living spaces where you want light but don’t need airflow, and they’re the simplest option.
2. Venting Skylights
Venting skylights open to let out heat and moisture, which makes them a good fit for bathrooms and kitchens. They help clear steam and cut down on condensation.
3. Tubular Skylights (Sun Tunnels)
A tubular skylight uses a small roof opening and a reflective tube to bring daylight into tight spaces like closets, powder rooms and interior halls. It’s a smaller job than a full skylight.
Deck-mounted or curb-mounted?
A deck-mounted skylight sits low on the roof deck with flashing built for it. A curb-mounted skylight sits on a raised frame, which works well on low-slope roofs and when replacing an older curb unit. We’ll tell you which fits your roof.
When to Install a Skylight
Skylight work depends on the weather more than most roofing, because the roof is open while the unit goes in.
Late spring through early fall is the easiest window: drier, settled weather and long days.
Winter installs are possible with a clear forecast and a tight schedule. Sealants and flashing tapes need a minimum temperature to bond, and rushing them in the cold is how a skylight ends up leaking a year later. We watch the National Weather Service office in Sterling forecast before we open a roof.
Planning a skylight for next summer? Late winter is a good time to get it quoted, so you can pick your date before the busy season.
A leaking skylight is different. We treat it as a repair and handle it in any season. If water is coming in now, see emergency roof repair.
Why Choose Loudoun Roofing
Loudoun Roofing has served Leesburg and Loudoun County since 2001. Here’s what homeowners can count on:
- Roofers who do skylights: we handle the flashing and the roof around the skylight, not just the unit, which is where most leaks start.
- Licensed and backed: a Virginia Class A General Contractor, with a 10-year workmanship warranty.
- Photos of the work: Esteban inspects the roof himself and sends before-and-after photos, as many of our customer reviews mention.
- 24/7 for leaks: if a skylight starts leaking, call (571) 508-8642 any time.
See finished jobs near you in our project gallery.
Testimonials
What they’re saying about us
✦ What customers say
Customers most often say Loudoun Roofing responds quickly to leaks and storm damage, often the next day, and that owner Esteban inspects both the roof and the attic and sends before-and-after photos of every repair. Many reviewers describe honest advice that fixes the actual problem instead of pushing a full replacement, with fair, detailed estimates. Homeowners across Loudoun County and Northern Virginia also mention on-time crews, spotless cleanup down to the last nail, and Keylah in the office keeping them informed.
AI-generated summary of customer reviews, updated November 10, 2026.
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Frequently Asked Questions
How much does it cost to install a skylight?
It depends on the size and type of skylight, whether it’s fixed or venting, your roof’s pitch and material, and whether the opening needs new framing. The cheapest time to add or replace one is during a roof replacement, because the roof is already open. We give free, written estimates after we’ve seen the roof and the room below.
Can a skylight lower my energy bills?
It can cut how much you use lights during the day, and a venting unit helps let summer heat out. Placement matters: a skylight in the wrong spot can add heat in summer. The U.S. Department of Energy covers daylighting, and we’ll help you pick a spot and a model that fit the room.
Are skylights prone to leaking during Virginia storms?
Not when they’re flashed and sealed correctly. Most skylight leaks we see come from flashing that was done poorly or has worn out, not from the skylight itself. Because we’re roofers, we tie the skylight into the roof the same way we’d flash a chimney or a valley.
What type of skylight is best for my home?
It depends on the room. Venting skylights suit bathrooms and kitchens, fixed skylights suit hallways and living spaces, and tubular skylights work for closets and small interior rooms. We’ll recommend one after looking at your roof and the space below.
Do you install Velux skylights?
Yes. We install Velux skylights for homes, including fixed and venting models, in deck-mounted and curb-mounted styles. We can add them to an existing roof or put them in during a roof replacement.
Is the skylight inspection and estimate free?
Yes. We look at the skylight, the flashing and the roof around it, check the room below for condensation, and give you a free written estimate. If it’s a repair, we’ll say so. The estimate also tells you how long the job will take, since that depends on the number of units and whether the opening needs new framing.
My skylight is leaking — does it need replacing?
Usually not. Most skylight leaks are a flashing failure or a worn seal, not a problem with the unit, and both can be repaired. Replacement makes sense when the glass seal has failed and the panes stay fogged, when the frame is damaged, or when the unit is over 20 years old and keeps leaking.
There’s water on the inside of my skylight glass. Is that a leak?
Often it’s condensation, not a leak, especially on cold mornings and in bathrooms and kitchens. The fix is better ventilation in the room below, not roof work. We’ll tell you if that’s what you have, and we won’t charge you for saying so.
Should I replace my skylights when I get a new roof?
If they’re more than about 10 years old, yes. Doing it during a roof replacement costs far less than a separate job later, because the flashing and the roof around it are already open. An aging skylight left under a new roof is one of the most common leaks we get called about, and fixing it later means disturbing the new roof.
Do you install sun tunnels as well as skylights?
Yes. A sun tunnel brings daylight into a room with no roof right above it, like an interior bathroom, a hallway or a walk-in closet. It needs a much smaller roof opening than a full skylight and fits spaces where a regular skylight won’t.
