Spray Foam Insulation Attic Temperature

Energy efficiency there are numerous ways in which an unvented attic insulated with spray foam can reduce a home s energy consumption.

Spray foam insulation attic temperature.

With it the orientation and type of insulation applied to the top of the building enclosure has changed from the traditional way and so temperature and moisture conditions experienced by various assembly elements will be impacted. Attic insulation is also crucial for colder days. Foam insulation has a solution for this wild frontier. With proper insulation at the roof it will capture the heat that is rising up from your heater and it won t leak outside through cracks high density spray foam is usually closed cell for this reason.

In a properly insulated spray foam attic the temperature won t be much higher than the house temperature. However in a traditionally insulated attic insulation on the ceiling the attic is. The attic ridge dew point ranges from about 48 f to 85 f. In this house we ve decided to go with spray foam insulation on both the roof deck and the walls for temperature control.

I ll come back with a followup article to write more about this but i ll point out two important facts about the data above. Using a high density spray on top will block the extra heat and keep your house cool. Yes using spray foam we have added your attic to the conditioned space. Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic.

Insulation decisions for houses in central texas are a huge consideration. The dew point for those conditions is 55 f. A thermal moisture and radiant barrier. In fact our spray foam insulated attic temperatures rarely exceed a 15 degree variable from what the living space temperature is on the most extreme day of the year summer or winter.

The attic is a space with the wildest temperature changes in the entire home. The minimum temperature for storing spray foam insulation is 70 degrees but the drums should ideally be stored between 70 and 80 degrees. It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing. Apparently the living area is nice and dry.

Those temperature swings sometimes as much as 100 degrees are often caused by the presence of duct work and leaky areas such as wall leads and can lights. Moisture is also another huge issue when it comes to spray foam insulation in an attic. The insulation reduces wildly high temperature spikes and so the attic becomes a conditioned part of the home like any other room. To some unvented attic construction using spray foam insulation is a fairly new approach in home building.

The attic floor dew point ranges from about 49 f to 70 f.