Condition, scope & system planning
Skylights and ventilation should be coordinated with the roof assembly rather than treated as separate accessories
Skylights interrupt the main roof surface and require compatible flashing, curb or deck mounting, underlayment integration, slope suitability, seal condition, and interior finishing.
A leak near a skylight may come from the skylight, flashing, surrounding roof, condensation, interior trim, or a higher roof area. Diagnosis should identify the source before replacement is recommended.
Attic ventilation usually relies on balanced intake and exhaust. Ridge vents, off-ridge vents, powered vents, gable vents, soffit vents, and sealed or conditioned attic designs should not be combined without understanding the intended airflow.
Blocked soffit intake, compressed insulation, disconnected ducts, high attic moisture, and heat can affect decking and interior conditions. Ventilation is not a cure for every moisture issue, but it should be reviewed during reroofing.
The proposal should identify skylight model and flashing, curb condition, interior work, vent type, intake path, opening size, weather protection, and warranty responsibilities.
Items to include when comparing proposals
- Skylight age, model, glass, curb, and flashing
- Leak versus condensation evidence
- Roof slope and manufacturer requirements
- Underlayment integration around openings
- Existing intake and exhaust ventilation
- Blocked soffits or insulation baffles
- Bathroom and dryer exhaust termination
- Interior drywall, trim, and painting needs
Questions homeowners often ask
Should skylights be replaced during a roof replacement?
Age, condition, seal history, compatibility, warranty, and access should be considered. Replacing an aging skylight during reroofing may avoid disturbing the new roof later.
Is more roof ventilation always better?
No. Ventilation should be designed as a balanced system and coordinated with the attic type, insulation, air sealing, and exhaust ducts.
Can condensation look like a skylight leak?
Yes. Interior humidity, cold surfaces, air leakage, and drainage can create moisture around skylights even without exterior water entry.
