Typhoon foredeck vent
Moderator: Jim Walsh
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John Halporn
Typhoon foredeck vent
I have been thinking of placing a 3" round vent in the foredeck of my typhoon, aft of the cleat. Does this weaken the deck? Is the extra ventilation worth it? I am also thinking of putting 2 more round portholes in the raised cabin roof. Is this structurally sound?
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sloopjohnl
Re: Typhoon foredeck vent
john,
go with a 4" opening. i have had one in my deck at the same location for 10 years and it was there when i bought it. i put in a nicro solar mushroom vent to help alleviate a condensation problem in the spring and fall. the vents come with an intake and an exhaust fan blade so you can use it in any capacity you wish. i used the exhaust to cure the condensationa and it worked extremely well. the cowl vent that came with the boat did not do much to solve the condensation and it tended to let rain water in. you can also get an interior teak trim ring to dress the hole up if you wish.
when you cut the hole it would be a good idea to epoxy the sides of the opening so water cannot infiltrate the deck core.
go with a 4" opening. i have had one in my deck at the same location for 10 years and it was there when i bought it. i put in a nicro solar mushroom vent to help alleviate a condensation problem in the spring and fall. the vents come with an intake and an exhaust fan blade so you can use it in any capacity you wish. i used the exhaust to cure the condensationa and it worked extremely well. the cowl vent that came with the boat did not do much to solve the condensation and it tended to let rain water in. you can also get an interior teak trim ring to dress the hole up if you wish.
when you cut the hole it would be a good idea to epoxy the sides of the opening so water cannot infiltrate the deck core.
John Halporn wrote: I have been thinking of placing a 3" round vent in the foredeck of my typhoon, aft of the cleat. Does this weaken the deck? Is the extra ventilation worth it? I am also thinking of putting 2 more round portholes in the raised cabin roof. Is this structurally sound?
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Jim Sullivan
Re: Typhoon foredeck vent
I would not recommend putting a vent in the foredeck. I have owned two typhoons (a '73 and a '71)--the first was a '73 that I installed a vent in the foredeck. I still had a problem with condensation so I never bothered to install one on the '71. Further, the foredeck is small and a vent like that gets in the way. I would also not recommend installing portholes in the cabin roof--I have always tried to keep my typhoon in as near original condition as possible.John Halporn wrote: I have been thinking of placing a 3" round vent in the foredeck of my typhoon, aft of the cleat. Does this weaken the deck? Is the extra ventilation worth it? I am also thinking of putting 2 more round portholes in the raised cabin roof. Is this structurally sound?
jdsullivan@amexol.net
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Bill Bloxham
Re: Typhoon foredeck vent
Yes, it weakens the deck, but if your foredeck is in good shape (no delamination)it has plenty of strength left. Mine does not deflect with two people walking on it.
The 4" low profile vent is the way to go, and take John's advise on the powered vent unit. You have the option of powered venting when you are not on the boat, a cowl for anchoring out and a screw in cover for windward work.
A big help would be to leave your rear inspection port open when you are away form the boat. (I assume you do not have a bulkhead between the transom area and the side lockers). Open the hatches below and give the mildew a slow start.
And do seal the deck coring.
mmmmmmbill@aol.com
The 4" low profile vent is the way to go, and take John's advise on the powered vent unit. You have the option of powered venting when you are not on the boat, a cowl for anchoring out and a screw in cover for windward work.
A big help would be to leave your rear inspection port open when you are away form the boat. (I assume you do not have a bulkhead between the transom area and the side lockers). Open the hatches below and give the mildew a slow start.
And do seal the deck coring.
mmmmmmbill@aol.com