Attic in Skaneateles
Attic ventilation in Skaneateles: older ceilings can leak air, sealed ones can hold moisture
Attic ventilation in Skaneateles looks different in an old village house and a newer one. Tell us what you saw in your attic and when, and book a visit to find out where the moist air gets in.
Asking where the water gets in commits you to nothing.
What we do
We help you find where the water really gets in and book a diagnostic visit with an independent roofer, who puts the fix in a written proposal.
Our word before the ladder goes up
- You owe nothing for asking, and you can walk away.
- The visit looks for the way in before any roof talk.
- You see the repair proposal in writing before work starts.
- The $100 credit follows the rules on our Terms page.
The roofer you hire answers for their own work and contract.
Signed Roofing Pros Syracuse, (315) 640-3590
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Questions
Attic ventilation in Skaneateles: short answers
Should my Skaneateles attic get more vents?
Not first. The federal guide says to find and seal air leaks before adding insulation. Ask the roofer about ceiling gaps, then the vent area.
Is frost in the attic a roof leak?
Usually not. Frost on the deck usually comes from household air reaching it. When it melts, it can drip like a leak and stain the ceiling. The roofer checks the attic and any plumbing above the ceiling.
Is a humid house a reason to run the bath fan longer?
Only if the fan vents outdoors. A fan that ends in the attic adds moisture instead. Check the outlet first, and tell the roofer what you find.
How do I know the right amount of venting?
The state sets 1/150 of the attic, or 1/300 with 40 to 50 percent in the upper vents. Ask the roofer for the numbers for your attic, in writing.
Attic ventilation in an old Skaneateles village house
Housing in the village is old: half stood by 1938. Older ceilings commonly have gaps around chimneys, wiring and hatches, so warm air leaks into the attic. The federal guide says to find and seal air leaks before insulating, and that sealing at the ceiling plane is the best chance to limit condensation in extreme cold.
At the eaves, insulation can be thin or pressed down, which makes a cold spot. The state requires insulation not to block the eave vents, and at least one inch of space between the insulation and the roof sheathing there. Ask the roofer to check both.
If you look, look only from the hatch opening with a flashlight, and keep off the insulation. Is it thin along the eaves, or pushed flat against the sheathing? Is there light coming around the hatch? Write down what you see.
You should not start by cutting vents. In an old house, sealing the ceiling is the first job. Ask for the ceiling gaps to be closed on the proposal before any vent is added.
Signs
Signs a Skaneateles roof needs attic ventilation
Frost on nail tips or the deck underside
Frost on a cold morning that turns to drips later is a condensation sign. Note the date.
Compressed or thin insulation at the eaves
The federal guide says cold spots form there in winter. Ask the roofer to check the eaves.
A bath fan duct that stops in the attic
A fan should vent outdoors. Check where yours ends.
A humid house in winter
Windows that fog every morning say the indoor air is damp. A meter can confirm it.
The newer Skaneateles house: attic parts and indoor moisture
In the town, 11.2 percent of housing is from 2000 or later. Housing from 2000 on may have newer attic parts, a proxy and not a measurement of your house. The federal guide warns that sealing a house can leave the indoor air more humid, and says to pair it with balanced ventilation.
The same guide says most sources recommend indoor relative humidity of 30 to 50 percent in the heating season. Check yours with a meter. If bath fans vent into the attic, that is a larger problem: a fan should vent outdoors by the most direct duct run.
Tell the roofer the reading, and ask them to write down where each fan ends. Then read how much venting a house needs in our ventilation article.
Zone 5 and the 40 to 50 percent upper-vent split in Skaneateles
Section R806.2 sets net free vent area at 1/150 of the attic and allows 1/300 only with 40 to 50 percent in the upper vents. Onondaga County is in Climate Zone 5, so the Zone 6 to 8 vapor retarder condition does not apply. A baffle next to eave vents keeps insulation from blocking the air path.
You can ask the roofer for the net vent area, the upper and lower split and whether baffles are in. If you are not sure the attic is your problem, start with roof leak diagnosis in Skaneateles.
Other ways in
Other ways water gets into a Skaneateles house
Roof Leak Diagnosis
Trace the stain to its source first.
Low-Slope Roofing
Ask for the pitch before anyone patches again.
Roof Flashing Repair
Name the joint nearest the drip.
Gutters and Drainage
Follow the water from edge to ground.
Nearby
Neighbors of Skaneateles with this page
Describe the Skaneateles attic and book the visit.