If a chimney intersects the ridge you.
Installing vent in old roof.
Leave the drill bit sticking through the roof so you can find the hole.
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.
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Start in the attic and drill a hole through the roof in the desired vent location.
This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.
Next position your ladder against your home and.
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.
Drill a hole upward through the middle of the area you desire and leave the drill bit sticking up through the roof so.
The installation of a turbine vent is nearly identical to a static vent.
From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.
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Try to keep it close to the fan location.