D
Structural Frame and Building Envelope
framing, interior doorway, and all penetrations and shared surfaces. To create this seal, perform any or all of the following:
– Tape and joint compound all drywall joints. – Paint walls and ceilings( because carbon monoxide could penetrate unfinished drywall and seams). – Caulk seal the bottom plate to the floor. – Caulk seal the drywall to the bottom plate and to any framed opening. – Install a rubber or foam gasketed door frame( including side and top weatherstripping and door sweep). Metal weatherstripping does not qualify. – Use caulk or foam to completely seal all penetrations in all garage walls and ceilings on both sides of walls and floors. – Seal all connecting floor and ceiling joist bays. – Place carbon monoxide alarms in adjacent rooms that share a door with the garage.
The test method should consist of the following steps( which are based on the best practice guidelines from the American Lung Association ® Healthy Home Program):
a. |
Set up the house for an ordinary blower door test. |
b. |
Shut all exterior and interior garage doors, and turn off fans and HVAC. |
c. |
Depressurize the house to-50 pascals to outside. |
d. |
Slide a tube( such as a copper capillary tube) from a manometer under the interior door to |
the garage. |
e. |
Verify that the pressure difference across the garage door to the house is 49 pascals or |
less. Note that the testing technician will have to average both pressure difference |
measurements over five to ten minutes to account for variations. |
A carport, detached garage, or no garage meets the intent of this measure. For multifamily projects
Where demand-controlled ventilation of garages is required, fans must be controlled by carbon monoxide sensors.
Note: This credit is a requirement associated with EPA Indoor airPLUS program, measure PJ1.
VERIFICATION Measure D9.1
Field Verification: The Rater will conduct field compliance verification and take photos of the detached garage.
Measure D9.2
DRAFT
Field Verification: The Rater will complete one of the following: �
�
For the garage fan, the Rater will conduct field compliance verification of the garage fan’ s installation and runtime( either continuous or linked to an occupant sensor, light switch, or other controller) or of the detached garage. The Rater will take representative photos of applicable elements. For the tightly sealed air barrier, verification of the airtight seal should be accomplished with a blower door test that depressurizes the home to-50 pascals( with respect to outdoors) and verifies
DRAFT GreenPoint Rated New Home Rating Manual Version 6.0, September 2013 33 © Build It Green