Skylight Installation & Leak-Proofing in Birmingham, MI
I've been doing Detroit roofing services since 1988, and if there's one thing that keeps Birmingham homeowners up at night, it's a leaking skylight. You get that first brown stain on the ceiling, or worse — water dripping onto your hardwood floor during a January thaw — and suddenly that beautiful natural light doesn't seem worth it anymore.
Here's the thing: skylights don't leak because they're inherently problematic. They leak because they were installed wrong. In Michigan, where we cycle through freeze-thaw conditions 40-50 times every winter, a skylight installation needs to be executed with precision. One missed step in the flashing process, one shortcut on the ice and water shield, and you're dealing with water intrusion for years.
I'm writing this because I've torn out too many failed skylight installations in Birmingham, Bloomfield Hills, and Royal Oak — jobs done by contractors who didn't understand Michigan weather or didn't care enough to do it right. If you're considering adding a skylight, or if you're dealing with an existing leak, this is what you need to know.
Why Skylights Leak in Michigan (And How to Prevent It)
Let's start with the most common culprit: Michigan's freeze-thaw cycle. When temperatures bounce between 15°F at night and 38°F during the day — which happens constantly from December through March — the materials around your skylight expand and contract. If the flashing wasn't installed with enough flexibility or if the sealant wasn't rated for temperature extremes, you get gaps. Water finds those gaps.
The second major issue is ice dams. When heat escapes through your roof (usually because of poor attic insulation in Metro Detroit), it melts snow on the upper portions of your roof. That water runs down, hits the colder section near the eaves — or around a skylight well — and refreezes. Ice builds up, creating a dam that forces water under shingles and flashing.
Around a skylight, this is especially problematic because the skylight well creates a natural collection point. If there's no properly installed cricket (a small peaked structure) above the skylight to divert water around it, you're asking for trouble.
Condensation vs. Actual Leaks: Before you panic, check whether you're seeing condensation or a true leak. If moisture appears on the inside of the glass on cold mornings and disappears by afternoon, that's condensation — usually caused by high indoor humidity and insufficient ventilation. If you see water stains on the drywall or dripping from the frame, that's a leak that needs immediate attention.
The third issue? Shortcuts during installation. I've seen contractors skip the ice and water shield entirely, use standard roofing tar instead of proper skylight sealant, or fail to integrate the flashing correctly with the surrounding house siding in Detroit and roofing materials. In Birmingham's historic neighborhoods, where many homes have slate or tile roofs, improper flashing integration is even more common because it requires specialized knowledge.
The Right Way to Flash a Skylight in Birmingham
Flashing is the metal or rubberized material that creates a watertight seal between the skylight and your roof. Get this wrong, and nothing else matters. Here's how it should be done — the way we do it on every exterior services project in Detroit.
Step 1: Prepare the Roof Deck and Opening
Before the skylight goes in, we cut the roof opening to the manufacturer's exact specifications. This isn't a "close enough" measurement — it needs to be precise. We also check the roof framing to ensure there's adequate support. If rafters need to be doubled up or headers added, we do that work first.
Step 2: Apply Ice and Water Shield
This is non-negotiable in Michigan. We install a continuous layer of self-adhering ice and water shield that extends at least 12 inches beyond the skylight opening on all four sides. This membrane bonds directly to the roof deck and self-seals around fasteners. It's your last line of defense against water intrusion.
We use CertainTeed WinterGuard or a similar high-quality product rated for Michigan's temperature swings. Cheap alternatives crack in cold weather and fail within a few years.
Step 3: Install the Skylight Curb
The curb is the raised frame that the skylight sits on. Factory-built curbs are preferable because they're engineered to match the skylight unit, but site-built curbs are sometimes necessary for custom applications. Either way, the curb must be level, properly secured to the roof framing, and extend at least 4 inches above the finished roof surface.
Step 4: Flash the Lower Curb
We start at the bottom. The lower flashing piece goes on first, integrating with the ice and water shield and extending under the shingles below the skylight. This creates a shingle-over-flashing relationship that directs water down and away from the curb.
Step 5: Install Step Flashing on the Sides
Step flashing is installed in sections, woven with each course of shingles as we work our way up both sides of the skylight. Each piece overlaps the one below it, creating a continuous water-shedding pathway. This is tedious work, but it's critical. Rushing this step is how leaks happen.
Step 6: Install Head Flashing and Cricket
The upper flashing goes on last, but before we complete it, we install a cricket (also called a saddle) — a small peaked structure that sits above the skylight and diverts water around it. On skylights wider than 30 inches, this isn't optional. Without it, debris accumulates, snow builds up, and ice dams form.
Step 7: Seal and Finish
We apply high-quality polyurethane sealant at all critical joints, install the skylight unit into the curb, and complete the interior finishing. This includes proper insulation around the skylight well and a continuous vapor barrier to prevent condensation issues.
The entire process takes a full day for a single skylight, sometimes longer if we're working around seamless gutters in Detroit, MI or complex roof geometry. Contractors who promise to install a skylight in a few hours are cutting corners.
Choosing the Right Skylight for Michigan Weather
Not all skylights are built for Michigan winters. Here's what to look for when you're shopping around.
Fixed vs. Venting Skylights
Fixed skylights don't open. They're simpler, less expensive, and have fewer potential failure points. Venting skylights open to allow airflow, which is great for bathrooms and kitchens, but they introduce moving parts, seals, and motors (if they're electric) that can fail. In Michigan's temperature extremes, venting skylights require more maintenance.
If you want ventilation, make sure you're getting a quality unit with a rain sensor that automatically closes the skylight when it detects moisture. Velux makes solid venting skylights that hold up well in our climate.
Glass Specifications and Energy Ratings
You want double-pane, low-E glass with argon or krypton gas fill. This isn't luxury — it's necessity. Single-pane skylights lose massive amounts of heat in winter and turn your room into a greenhouse in summer. The U-factor (heat transfer rate) should be 0.30 or lower. The Solar Heat Gain Coefficient (SHGC) should be around 0.30-0.35 for Michigan — low enough to reduce summer heat gain but high enough to capture passive solar heating in winter.
Velux and Sun-Tek both offer Energy Star-rated skylights that meet these specs. Avoid the cheap big-box store units — they're not engineered for our climate.
Curb-Mounted vs. Deck-Mounted
Curb-mounted skylights sit on a raised curb, which elevates them above the roof surface. This is the traditional installation method and generally more reliable for leak prevention. Deck-mounted (low-profile) skylights sit closer to the roof plane and have a sleeker look, but they're harder to flash properly and more prone to ice dam issues.
For Birmingham homes, especially those with traditional architecture, I almost always recommend curb-mounted installations. They're proven, easier to repair if needed, and integrate better with Detroit window experts' work on the rest of the home.
What a Professional Installation Looks Like
When you hire NEXT Exteriors for skylight installation, here's what the process looks like from start to finish.
Pre-Installation Roof Assessment
We start with a thorough roof inspection. We're looking at the condition of your existing roofing material, the structural integrity of the deck and framing, and whether your attic insulation and ventilation are adequate. If you've got ice dam problems or inadequate insulation, we address those issues first — otherwise, you'll be fighting condensation and leaks no matter how well we install the skylight.
We also check local building codes and HOA requirements. In some Birmingham neighborhoods, there are restrictions on skylight placement and visibility from the street.
Proper Curb Construction
If we're using a site-built curb, we construct it from pressure-treated lumber, ensure it's perfectly square and level, and integrate it with the roof framing. The curb gets wrapped with ice and water shield before any flashing goes on.
Flashing Integration
We follow the process I outlined earlier — ice and water shield, lower flashing, step flashing, cricket installation, and head flashing. Every piece is mechanically fastened and sealed. We don't rely on sealant alone to hold flashing in place.
Interior Finishing and Insulation
The skylight well (the shaft that connects the roof opening to your ceiling) needs to be insulated to R-19 minimum, with a continuous vapor barrier. We use rigid foam board or spray foam, depending on the application. The interior finish gets drywall, paint, and trim that matches your existing ceiling.
If you're adding a skylight as part of a larger renovation that includes Southeast Michigan painting professionals' work, we coordinate the timing to minimize disruption.
Timeline and Disruption Expectations
A single skylight installation typically takes 1-2 days. Day one is exterior work — cutting the opening, building the curb, installing flashing, and setting the skylight. Day two is interior finishing. If weather's bad or we run into unexpected framing issues, it might stretch to three days.
You'll have a temporary tarp over the opening overnight if we can't complete the exterior work in one day. We protect your interior with drop cloths and plastic sheeting, and we clean up thoroughly every day before we leave.
Signs Your Skylight Needs Repair or Replacement
If you already have a skylight, here's how to know when it needs attention.
Water Stains and Active Leaks
This one's obvious. Brown or yellow stains on the drywall around your skylight mean water's getting in. If you see active dripping during rain or snowmelt, you've got a flashing failure or a compromised seal. Don't wait — water damage compounds quickly, and you could be looking at mold growth and structural rot.
Condensation Patterns
Excessive condensation on the inside of the glass, especially if it's running down onto the frame and drywall, indicates either a failed seal in the glazing unit or inadequate insulation around the skylight well. If the condensation is seasonal and minor, improving attic ventilation might solve it. If it's constant and heavy, the skylight probably needs replacement.
Cracked or Yellowed Glazing
Acrylic skylights yellow and become brittle over time, especially with UV exposure. If your skylight is more than 15 years old and the glazing looks discolored or has visible cracks, it's time for an upgrade. Glass skylights don't yellow, but they can develop stress cracks from structural movement or hail damage.
Failed Seals
If you see moisture or fogging between the panes of a double-pane skylight, the seal has failed. This can't be repaired — the entire glazing unit needs replacement. In most cases, it's more cost-effective to replace the whole skylight with a modern, energy-efficient unit than to try to source replacement glazing for an old model.
When to Repair vs. Replace
Minor flashing issues can often be repaired. If the skylight unit itself is in good shape but we find a gap in the step flashing or a degraded sealant joint, we can address that without replacing the entire skylight.
But if the skylight is more than 20 years old, has fogged glazing, shows signs of frame deterioration, or has leaked multiple times despite repair attempts, replacement is the smart move. Modern skylights are dramatically more energy-efficient and reliable than units from the 1990s and early 2000s.
Cost Reality: Skylight Installation in Birmingham
Let's talk numbers. Skylight installation isn't cheap, but it's also not as expensive as some homeowners fear — especially when you factor in the value it adds to your home.
Price Ranges for Different Skylight Types
For a standard fixed skylight (22.5" x 46.5" — a common size for hallways and bathrooms), you're looking at $1,800-$2,800 installed. That includes the skylight unit, all flashing materials, ice and water shield, interior finishing, and labor.
Larger skylights (30" x 54" or bigger) run $2,500-$4,200 installed. Venting skylights with electric motors and rain sensors start around $3,200 and can go up to $5,500 for premium models with integrated blinds and smart home connectivity.
Custom sizes, unusual roof pitches, or installations that require structural modifications (adding headers, rerouting ductwork, etc.) can push costs higher. We've done complex skylight installations in Birmingham's historic homes that ran $6,000-$8,000 because of the structural work and custom flashing required for slate roofs.
Installation Cost Factors
Several things affect the final price:
- Roof pitch: Steeper roofs are harder and more dangerous to work on, which increases labor costs.
- Roof material: Installing a skylight in an asphalt shingle roof is straightforward. Tile, slate, or metal roofs require specialized flashing and more labor.
- Accessibility: If your roof is three stories up or surrounded by mature trees that complicate equipment access, that adds to the cost.
- Interior work: A simple drywall shaft is one thing. If you want a custom light well with angled walls, crown molding, and a decorative finish, that's additional carpentry and finishing work.
- Timing: We're busiest in spring and fall. If you're flexible on timing and can schedule for winter (yes, we install skylights in winter with proper precautions), you might save 10-15%.
ROI and Home Value Impact
Skylights don't have the same ROI as a kitchen remodel or a new roof, but they do add value — especially in Birmingham's competitive real estate market. A well-placed skylight can make a dark hallway or bathroom feel twice as large and significantly more appealing to buyers.
Realtors consistently tell us that homes with natural light sell faster. If you're preparing to list your home and you've got a dark master bathroom or a gloomy hallway, adding a skylight is worth considering. You won't recoup 100% of the cost, but you'll likely see 50-70% return, plus faster sale time.
Financing Options
We work with several financing partners that offer payment plans for exterior improvement projects. Typical terms are 12-60 months with competitive interest rates. If you're doing a skylight installation as part of a larger project — say, a full roof replacement or siding upgrade — bundling the work can sometimes get you better financing terms.
Ready to Add Natural Light to Your Birmingham Home?
NEXT Exteriors has been installing leak-proof skylights in Southeast Michigan since 1988. We're CertainTeed Master Shingle Applicators with an A+ BBB rating and a 5.0-star average across 87+ reviews. Get a free, no-pressure estimate from a team that understands Michigan weather and does the job right the first time.
Get Your Free QuoteOr call us: (844) 770-6398
Frequently Asked Questions About Skylight Installation in Birmingham, MI
A quality skylight with proper installation should last 20-30 years in Michigan's climate. The glazing unit itself (the glass or acrylic) typically lasts 15-25 years before seals start to fail. The flashing and curb, if installed correctly with high-quality materials, can last as long as your roof — 25-30 years for asphalt shingles, longer for metal or tile. We've seen well-maintained Velux skylights from the 1990s still performing perfectly in Birmingham homes.
Yes, but it requires extra precautions. We install skylights year-round, including winter, as long as temperatures are above 20°F and there's no active precipitation. We use cold-weather sealants, heat the work area when necessary, and take extra care with ice and water shield installation (it doesn't adhere as well in extreme cold). The interior work is actually easier in winter because we can control the temperature inside your home. We just work faster to minimize the time your roof is open.
Not if you choose the right glass and add shading. Modern low-E glass with a proper Solar Heat Gain Coefficient (around 0.30-0.35 for Michigan) blocks most of the heat while still letting in plenty of light. We also recommend skylights with integrated or aftermarket blinds for south and west-facing installations. Velux offers factory blinds that fit inside the skylight well, and they're very effective at controlling heat gain. Proper attic ventilation also helps — if your attic is well-ventilated, heat doesn't build up around the skylight.
Yes. Skylight installation is considered a structural modification and requires a building permit from the City of Birmingham. The permit process typically takes 5-10 business days. We handle all permit applications for our clients — it's included in our installation service. The inspector will check the framing, flashing installation, and interior finishing. As long as the work is done to code (which it always is when we do it), the inspection is straightforward.
A skylight is a glazed opening in your roof that provides direct natural light and a view of the sky. A sun tunnel (also called a solar tube or light tube) is a reflective tube that channels light from a small roof dome down to a diffuser in your ceiling. Sun tunnels are cheaper ($800-$1,500 installed vs. $1,800-$4,200 for a skylight), easier to install, and work well for small spaces like closets or interior bathrooms where you just need light, not a view. But they don't provide ventilation, don't offer a view, and give less light than a proper skylight. For living spaces, bedrooms, and kitchens, we almost always recommend actual skylights.
Absolutely. Cathedral ceilings are actually ideal for skylights because there's no attic space to build a light well through — the skylight sits directly between the roof and ceiling. Installation is simpler and less expensive than in a home with an attic because we don't have to frame and finish a skylight shaft. We just need to ensure the ceiling insulation and vapor barrier are properly detailed around the skylight opening. Many Birmingham homes with vaulted ceilings have beautiful skylight installations that flood the space with natural light.
Three things prevent ice dams: proper attic insulation (R-49 or higher in Michigan), adequate attic ventilation (1 square foot of vent area per 150 square feet of attic space), and a properly installed cricket above the skylight. The insulation keeps heat from escaping through your roof. The ventilation keeps the roof deck cold so snow doesn't melt unevenly. The cricket diverts water around the skylight so it doesn't pool and refreeze. We address all three on every skylight installation. If you're getting ice dams around an existing skylight, the problem is usually inadequate insulation — adding blown-in cellulose or spray foam in the attic typically solves it.