Baffles In Attic With Expanding Foam

Sometimes called rafter vents baffles provide ventilation and keep the insulation from blocking airflow through your attic.

Baffles in attic with expanding foam.

In addition to offering airflow in your attic space baffles keep attic insulation off your roof deck which is especially important for cold michigan winters. If your baffles extend all the way down to the soffit vents prevent air from escaping through the joints between the vents and the baffles by spraying spray foam where the. Typically made from polyvinyl chloride rigid foam board or cardboard they can be installed with a few. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.

The foam baffles hold up in michigan s humidity whereas cardboard baffles can absorb moisture causing them to fall and be ineffective. Nothing unusual about that. Baffles are also called wind baffles venting chutes rafter vents or insulation baffles. Putting baffles in your attic is a crucial step in installing attic insulation.