Three improvements with different jobs
Air sealing limits unwanted air movement through gaps. Insulation slows heat transfer through the insulated area. In a vented attic, planned intake and exhaust provide an outdoor airflow path beneath the roof.
They work together, but one does not replace the others. Adding insulation can leave an air leak unresolved. Adding roof vents will not repair a flashing leak. ENERGY STAR’s attic air-sealing guidance explains why air sealing and insulation are considered together.
Start with the symptom and its cause
Tell your contractor when the problem happens. A stain after wind-driven rain, frost during a cold spell and a draft around an attic hatch offer different clues. Share the timing of any recent roofing, insulation or exhaust-fan work.
A useful scope should separate the observations from the proposed work. Ask what each change is intended to solve and how the result will be checked.
What order should the work follow?
Active leaks, wet materials and unsafe conditions need attention before they are covered. The project can then address air leaks, insulation and ventilation in a coordinated sequence suited to the home.
Work around heat-producing equipment, wiring and combustion appliances needs appropriate professional evaluation. ENERGY STAR recommends professional combustion-safety testing after air sealing when fuel-burning equipment is in the attic. See its well-insulated and sealed attic guidance.
Does every attic need more vents?
No. First identify whether the roof assembly is intended to be vented or unvented. For a vented attic, the contractor should account for both intake and exhaust and check that the airflow path is open. Owens Corning explains the importance of balanced intake and exhaust.
Questions to ask before approving work
What if insulation was added recently?
Ask whether the work affected soffit openings, the attic hatch or exhaust ducts. Recent work is useful history, not proof of the cause.
Can these changes stop ice dams?
They may address contributing conditions, but the roof design and source of heat need evaluation. Read our ice-dam guide.
Can you evaluate the whole attic?
Access varies. Ask which areas were inspected and which remain concealed.
Top Roof serves Batavia and Genesee County, including Le Roy and eastern Genesee County. Explore attic insulation and ventilation or request an evaluation.
Inspect. Detect. Protect.