Most building codes don t address humidity issues and are also pretty lax on the level of insulation required in your attic especially around those previously mentioned attic bypasses.
Condensation line joined to house vent in attic.
They are prone to building up condensation.
How to prevent condensation in ceiling vents.
In this quick video i show you what to look for if you have condensation build up in your attic.
Remove the cover and inspect the drain for debris.
Also attic condensation isn t a problem limited to only older homes.
Improving your attic s air sealing and insulation prevents attic air from reaching your ceiling and it s a fairly easy job to do yourself.
Newer homes can be affected as well.
Try to identify the access point on the drain line which might be a t shaped vent with a pvc cover.
It may be covered by a removable access panel.
If the drain line is connected to a plumbing drain leading to sewer it should have a trap and a downhill vent.
If it just drains outside to building exterior your probably don t need a trap or vent but do make sure it has adeq.
In summer when the air conditioning is on the reverse happens.
It may be located directly under the indoor air handler in your attic or utility closet.
2 the condensate line is not dripping.
In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.
Condensation dripping from a ceiling vent can have detrimental effects on the ceiling material surrounding the vent as well as carpeting and.