Mueller Pre-Fab - Manual (Page 96)

877-2-MUELLER G-4
venT InsTallaTIon
Roof ventilators (optional)
1 . Ventilators may be installed on the roof ridge after the roof sheets are on and before the
ridge roll or peak sheet is installed . The ventilators are ten feet long and usually are installed
at the peak and between two rafters .
2 . Cut out the ridge roll or peak sheet to fi t the opening of the ventilator . Ensure that the
opening is cut correctly so the ventilator will fi t properly and provide enough lap over the
opening to prevent leaks . (The roof sheets may need to be trimmed to maximize venting) .
3 . Place the ventilator over the opening . Use molded rubber outside sealers to fi ll the gaps
between the ventilator fl ange and the roof sheets .
4 . Attach the ventilator to the roof sheets with lap tek screws . Screw through the vent skirt to
the tops of the roof sheet ribs .
5 . Locate the vent adjusting pull chains as desired . (According to vents instructions) .