Do Attics Require Ventilation With Spray Foam Insulation. Yes using spray foam we have added your attic to the conditioned space. Spray foam insulation may prevent your home from getting enough ventilation. The main aim of ventilating the attic space is to allow the air in the home to circulate.
Spray foam provides an air seal. Generally speaking that s a good thing.
However in a traditionally insulated attic insulation on the ceiling the attic is vented.
Therefore providing mechanical fresh air ventilation is especially important in spray foam houses. Nope you absolutely do not need to ventilate a spray foam house and here s why. I have a spray foamed attic. It is also known to act as an air barrier however unfortunately it will not protect against vapor and moisture intrusions.
