What Skylight Installation Involves
Skylight installation is the process of cutting an opening through your roof sheathing, installing a weatherproof frame, and sealing the perimeter with flashing and sealant to allow natural light into your home. Fixed skylights remain stationary, while vented skylights open for ventilation. Each type requires careful installation of step flashing and counter-flashing to prevent water from wicking into your underlayment and roof deck.
The job starts with a design consultation to determine the best location, size, and style for your space. We assess your roof's structure, insulation needs, and the path of the sun to maximize daylighting while minimizing heat gain during Houston's intense summers.
Why Flashing and Sealant Matter
Flashing is the metal trim that bridges the gap between the skylight frame and your shingles. Counter-flashing overlaps the step flashing to direct water down and away from the opening. Without proper installation of both, water seeps into the space between the frame and roof deck, rotting sheathing and degrading your insulation.
We use high-quality sealant rated for Houston's humidity and UV exposure. This prevents the seal from cracking, peeling, or failing prematurely. Building code requires that all penetrations meet specific waterproofing standards—we follow them exactly.
The Installation Process
First, we mark the opening on your roof and cut through the shingles, sheathing, and underlayment with precision. We install the skylight frame, ensuring it sits level and square on the roof deck. Next comes the critical step: installing step flashing along the sides and counter-flashing at the top and bottom to create a water-shedding barrier.
We seal every seam with waterproof sealant and re-shingle around the perimeter using ring-shank nails and proper starter course technique. Finally, we inspect the interior seal and test for any gaps or leaks before finishing.
The entire job typically takes one day for a standard fixed skylight, though vented models or complex roof angles may take longer.
When You Need Skylight Installation
Homeowners in The Heights, Montrose, Sugar Land, Kingwood, and Katy choose skylights to brighten dark kitchens, bathrooms, and living spaces without adding electrical lighting. Skylights also reduce daytime energy use and create a sense of openness.
If your existing skylight leaks, shows signs of sag around the frame, or has cracked sealant, replacement is the best solution. Patching an old, failing skylight rarely stops the water intrusion—a new install with modern flashing and sealant prevents the rot and decay that damaged units cause.
Materials and Options
Fixed skylights are the most affordable and require no moving parts. Vented skylights let you open the roof to release heat and humidity—ideal for bathrooms and kitchens. Premium brands like VELUX and Solatube offer durable frames, low-E glass to reduce heat gain, and solar-powered blinds for light control.
We also install sun tunnels—a flexible duct system that runs from roof to ceiling—for spaces where a traditional skylight won't fit or where the roof deck is too high.
Skylight Replacement and Leak Repair
An old skylight that leaks typically means the flashing has corroded, the sealant has failed, or the frame has warped. Water wicks along the underlayment and into your attic, leading to mold, rot, and structural damage. Replacement is faster and safer than repair.
We remove the old frame and flashing, inspect the roof deck for decay, and install new step flashing and counter-flashing before setting the new skylight. If the deck is damaged, we replace the affected sheathing and restore your roof's integrity.
Energy Efficiency and Building Code
Houston's heat and humidity demand skylights with low-E coatings to reduce solar gain. Proper insulation around the frame prevents heat loss in winter and heat gain in summer. Building code requires that skylights meet specific wind-resistance and waterproofing standards—especially important given hurricane-force winds from Gulf storms.
We ensure every installation meets or exceeds code, with proper flashing, sealant, and fastening. This protects your home and gives you peace of mind.
FAQ
How much does skylight installation cost?
Skylight installation typically ranges from $800 to $2,500 per unit, depending on size, type, and roof complexity. Fixed skylights are less expensive than vented models. A free estimate accounts for your specific roof layout and material choices.
How long does installation take?
A standard fixed skylight installation takes one day. Vented skylights or multiple units may require two days. Weather delays can extend the timeline, but we work efficiently to minimize disruption to your home.
Will a skylight leak if installed incorrectly?
Yes. Poor flashing, inadequate sealant, or improper counter-flashing installation causes water to seep into your roof deck and attic. This is why professional installation by a licensed roofing contractor matters—we know exactly how to seal the opening so water runs off, not in.
