Moisture is also another huge issue when it comes to spray foam insulation in an attic.
Attic spray foam insulation problems.
Spray foam insulation problems misrepresentation of the spray foam insulation products used.
Check the rh levels in your attic over the course of a few weeks to see if the air is holding a lot of moisture.
When we seal the attic with spray foam it s as tight as a butter tub.
Insulating with spray foam insulation at the roof line will cause moisture problems with the roof sheathing.
But then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.
It could be because the spray foam contractor didn t seal off all the air leaks.
Below we are going to list the most common problems with using spray foam insulation in your home s attic or in any area inside of your home.
Poor application of the spray foam insulation.
The coverage needs to be uniform because a lot of heat will go through the under insulated areas.
Since there are dozens of brands of spray foam insulation.
However in a traditionally insulated attic insulation on the ceiling the attic is vented.
The poor application of spray foam insulation by an untrained or.
If you have high humidity in your spray foamed attic there are a variety of things that might be causing the problem.
It has been said that insulating with spray foam insulation at the roof line will lead to moisture problems with the roof sheathing.
Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic.
In an unvented attic scenario to limit air leakage as well as any associated condensation at the roof line a continuous air barrier is required.
A case of incompatibility.
Unfortunately good average thickness doesn t cut it.
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.
A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits.
It is made from inert polymers that do not become a food source for mold mildew or fungi when it becomes wet.
The spray foam insulation.