Attic Ceiling Spray Foam Insulation

If you look closely you ll see two exhaust flues on the left side.

Attic ceiling spray foam insulation.

It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing. Spray foam insulation that s convenient and easy to use. Using spray foam insulation in an unvented attic application both low density open cell and medium density closed cell spray foam can be used in an unvented attic to provide the needed thermal resistance and airtightness. You can use rigid foam panels or do as tom silva does with nearly all houses these days.

The installer sprayed foam directly on the metal flues. Using icynene spray foam as your attic insulation will turn your attic into a conditioned space. Moisture is also another huge issue when it comes to spray foam insulation in an attic. It will also help keep any duct leaks within the conditioned space of your attic.

Installing insulation attics one of the high tech insulation products being utilized these days is a foam spray product called icynene which is a foam that starts as two liquid components a and b if you will that are heated up and sent through two hoses and meet at a tip of a gun where the magic begins. The best attic insulation. Thus the air in the attic is connected with the air in the house. Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic.

This will allow for optimal operation of your hvac equipment as well as aid in early detection of situations such as roof leaks and wind driven moisture intrusion. One huge benefit of the spray foam insulated attic is that conditioned air leakage from the ac furnace duct system is contained and used to condition the attic. The insulation reduces wildly high temperature spikes and so the attic becomes a conditioned part of the home like any other room. In a vented attic all of that expensive airflow is lost to the environment.

You should never do this. If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor. R value of 7 in 1 inch 97 closed cell foam. But a common reason to put spray foam on the roofline is to avoid having to air seal the attic floor.

The attic you see in the photo here is a different home but it does have one feature in common besides the spray foam. When we seal the attic with spray foam it s as tight as a butter tub. Class i e 84 fire retardant meets building code spec. If you leave the insulation in the attic floor after insulating the roofline the attic will be cooler in winter than if you remove the insulation.