A skylight transforms a dark room into a bright, open space — but only if it's installed correctly. Skylights are roof penetrations, and roof penetrations are where leaks start. Marathon Roofing & Maintenance installs skylights the right way: structural curb framed between rafters, ice-and-water shield on all four sides, step flashing and counter-flashing integrated into the shingle field, and a watertight seal verified from inside the attic.
The curb is the foundation of every skylight installation. We frame it between existing trusses or rafters with doubled lumber to carry the load. The roof deck opening is cut precisely — no oversizing that weakens the sheathing. The skylight flange seals to the curb, and the flashing system integrates the unit into the existing shingle field so water runs over the flashing, not under it.
Our Skylight Installation Process
Free Consultation
Free on-site assessment. We check your roof structure, identify the optimal position between rafters, and present skylight options with honest pricing. Sun angle analysis included.
Roof Opening & Framing
We cut the roof deck opening through the sheathing and shingles, then frame a structural curb between the rafters with doubled lumber. Headers distribute the load around the opening. The curb provides a solid, level base for the skylight unit.
Flashing & Waterproofing
Self-adhering ice-and-water shield on all curb faces. Step flashing along both sides lapped under each shingle course. Head flashing at the top, apron flashing at the bottom. Waterproof sealant at every overlap and transition. The flashing makes or breaks the installation.
Final Seal & Trim
Unit installed and sealed. Light shaft insulated and trimmed. We verify the seal from inside the attic — if we can see any daylight at the flashing joints, we re-seal before we leave. Your skylight is watertight and energy-efficient.
What Marathon Customers Say
"Our neighbors recommended them and now we understand why. Meticulous attention to detail and they treated our home like it was their own."
"After getting several quotes, these guys stood out with their honesty and knowledge. No pressure, just straightforward advice and excellent workmanship."
"Best experience we've ever had with a home service company. On time, on budget, and the results exceeded what we expected. Truly top-notch."
Why Choose Marathon Roofing & Maintenance for Skylight Installation?
Insulated Light Shafts
Every skylight installation includes rigid foam insulation around the light shaft. Uninsulated shafts cause condensation and energy loss. We insulate, vapor-seal, and trim the interior for a finished look.
Roofer-Installed, Not Handyman
Marathon Roofing & Maintenance is a roofing contractor, not a general handyman. Skylights are roof penetrations — they require roofing expertise, proper flashing materials, and waterproofing knowledge. That's what we do every day.
Leak-Free Guarantee
Every skylight gets ice-and-water shield, step flashing on all four sides, counter-flashing, and sealant at every transition. Verified from inside the attic before we leave. If it leaks, we fix it free.
Code Compliant
Every skylight installation meets FL building code for structural framing, energy performance, and egress requirements. Permits pulled when required.