Urethane for dryer vent?


Old 07-22-18, 06:00 AM
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Urethane for dryer vent?

Is it ok to use urethane to seal around a 4" dryer vent in brick/drywall as it exits the house or should something else be used with better heat proof capabilities?

Secondly, for a vent exit, do I need to use a 5" sleeve around the 4" pipe or can the 4" vent just exit directly into the hood?
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Old 07-22-18, 07:48 AM
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It's only warm air exiting the dryer. Double pipe is not necessary. Urethane is fine, but I would use fiberglass. That way it's easy to replace or repair down the road.
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