Atlas Spray Foam and Attic Ventilation: Check the Warranty Conditions
Bulletin dated: January 2016 revision
This Atlas bulletin requires continuous ventilation immediately beneath the roof deck. It says foam applied directly to the deck without eave-to-ridge airflow does not meet its warranty requirements
Atlas technical bulletin: Spray Foam-Sealed Attics.
What this means for your roof
This Atlas bulletin requires continuous ventilation immediately beneath the roof deck. It says foam applied directly to the deck without eave-to-ridge airflow does not meet its warranty requirements. This manufacturer-specific position differs from some other brands, so an insulation plan should be checked against the exact shingle system.
A useful question for your contractor
Does the proposed foam installation preserve the airflow required by Atlas?
Ask for the answer to be tied to the actual roof condition and the exact product being installed. Keep the agreed repair or installation detail with your estimate and project photos.
Bulletin dated: January 2016 revision. The date shown identifies the manufacturer document used for this summary.
Read Atlas: Spray Foam-Sealed Attics
This homeowner summary explains the cited bulletin. The complete manufacturer document and current product instructions govern the installation details. A requirement for one manufacturer or product should not be transferred to another without checking.