This is a result of moist air leaking into your attic and then freezing when it hits your cold attic.
How to seal off opening into attic above air unit.
Just put it back into place.
Once you seal the air leak with caulk or expandable foam it s not necessary to replace the insulation.
Once it has sucked that heat out of the room the heat needs to go somewhere.
I m hoping you can help me with a problem i m having in my attic.
The opening around a furnace or water heater flue is a major source of warm air into the attic photo 5.
Air conditioners provide cool air to homes and add to comfort.
Optimally a powered attic exhaust vent should only pull air into the attic from soffit vents or any other vent specifically placed to bathe the bottom of the roof deck with its air flow.
Before air sealing the attic.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
The attic is prone to holes and cracks at its access points.
But if it isn t vented the air just recirculates back into the room you re trying to cool.
When an air conditioner is installed the installer drills a hole in the wall so that refrigerant hoses can reach the compressor.
Outdoor insects and rodents crawl through the hole and into the home.
My condo is only two years old but there is quite a bit of condensation on the roof boards they are damp wet almost all.
Sometimes they allow pests easy passage into the home.
As a recommendation only install a powered attic exhaust fan that has a temperature sensor and switch designed to turn the fan on off at a predetermined.
Let s review some of the most common spots in the attic that must be sealed.
Because the pipe gets hot building codes require 1 in.
Intake vents located at the lowest part of the roof under the eaves allow cool.
Seal small gaps with caulk up to inch and expandable foam spray up to 3 inches.
An air conditioner essentially collects heat from the air.
From masonry chimneys to any combustible material including insulation.