A roofer will from the attic mark a spot near the ridge of the roof he may first use nails from the attic to mark preferred spots between two rafters.
Installing vent in old roof.
If a chimney intersects the ridge you.
Next position your ladder against your home and.
Try to keep it close to the fan location.
Drill a hole upward through the middle of the area you desire and leave the drill bit sticking up through the roof so.
From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.
The installation of a turbine vent is nearly identical to a static vent.
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First head up to your attic and determine where you want to install your roof vent.
Leave the drill bit sticking through the roof so you can find the hole.
What you ll need to install a roof vent.
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When installing ridge vents in an old house close off all the existing gable vents or roof vents to ensure you don t have too much exhaust ventilation.