Frost Unheated Attic Wall

I have a customer that has frost forming on the inside of his unheated garage walls.

Frost unheated attic wall.

Insulation is measured in r values or resistance to heat. A ridge vent could accomplish this. I believe the cause is heat loss into the garage. Also it s close to a soffit vent and it was windy when the frost formed.

The higher the r value the less heat can penetrate. In addition to walls and attics insulation should be installed in ceilings with unheated spaces basement walls floors above vented crawl spaces cathedral ceilings floors over unheated garages or porches knee walls and in between interior walls especially bathrooms as well as ceilings and floors. Unheated areas of homes. That still won t prevent the moisture mold in your unheated bedroom.

This type of frost wall won t work for an unheated building type. In the photo at left the kneewall is the short wall with the door in it. The other factor is the high humidity in the home. Frost and ice forms in attics when warm humid air accumulates and condenses on the underside of your roof sheathing.

Probably in more place than you think. But plumbing pipes in an unheated area such as an attic crawl space and garage are at risk of freezing. Often inexpensive foam pipe insulation is enough for moderately cold climates. Only reducing your interior moisture levels will help.

Can sun get to the roof you will have either frost or water collecting. The first room when you walk in to the house from the garage is a. Frost protection of an insulated foundation also works for an unheated building by conserving ground geothermal heat beneath the building. Yesterday i was doing a home energy rating for quality assurance in augusta georgia and the house i was in had a bonus room.

Not sure where exactly to insulate. Frost penetration into the ground under various conditions the effect of heat from the building is magnified when insulation is strategically placed around the foundation. I also recommended insulating the rim joist adjacent to the garage with foam. Exposed interior plumbing exposed pipes in the basement are rarely in danger of freezing because they are in a heated portion of the home.

The frost in your attic indicates that you may need better ventilation out your roof. I suggested he turn off the humidifier on the furnace and control the rh in his house to help with the condensation. This frost could lead to mold in your attic another problem. An alternative for such issue is to design a horizontal layer placed under the foundation of the entire building.

Check your insulation zone before adding any insulation in unheated areas. As you can see the framing and the electrical wire prevented the insulation from making good contact with the air barrier.