In reality, there is an optimal balance between the initial cost of insulation and long-term energy performance and. There's no question that a house may have insufficient insulation (millions of homes in the United States and Canada have this same problem), but can a house have too much insulation? In short, yes you can. But can you over-insulate your attic? Could your current isolation be too much? While overinsulated attics aren't as common as underinsulated attics, it's possible to place so much insulation in the attic that this has a negative impact. Excessive insulation will cause moisture and moisture to build up in the attic space.
This can cause mold to form on walls and insulation. It's also possible for water to damage the house's roof support beams. Technically, yes, you can have too much insulation in a house. But it's rare, and the amount of insulation needed is actually specific to your home's needs. Excessive insulation in the attic can make a house too sealed and block ventilation grilles.
If airflow is blocked, moisture cannot escape. If moisture builds up in the attic and comes into contact with warm air, it can cause mold to form, which can cause serious respiratory problems in people. Ventilation is important because it prevents snow on the roof from melting, falling into eaves and gutters, refreezing and forming accumulations of ice. Using a radiant barrier is also a great idea, as it will reduce heat transfer between the roof and the insulation.
During the winter, these vents allow cold outside air to cool the attic, keeping the roof cool. But first, how do attics work? Also called an attic or panoramic living room, an attic is a room or space under the roof of a house or building. Because of this, some houses with sealed attics use a double roof that has a ventilated air space above the insulating cover of the roof. One thing to keep in mind about sealed or unventilated attics is that they lack the protection against heat build-up for tile roofs offered by ventilated attics.
If there is snow on the roof and the attic air is warm, the snow can melt from the roof and refreeze in the gutters, known as ice dikes.
