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Old 11-08-2012, 11:34 AM   #1
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the flap on roof vents for bathroom fans


We hear a noise coming from the bathroom fan when the wind blows. We were told themanagement company of our condo was going to replace the whole thing since the flap cannot be changed our but now they just want to remove the flap. We are resisting this due to cold/hot air getting into the attic and affecting our heating/cooling bills. would water and snow or ice also be an issue? We were thinking of suggesting a cap be put on the vent on the roof. Is this a logical solution and what kind of cap should we request?

Thank you!

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Old 11-08-2012, 04:13 PM   #2
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the flap on roof vents for bathroom fans


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Originally Posted by Peyton18 View Post
We hear a noise coming from the bathroom fan when the wind blows. We were told themanagement company of our condo was going to replace the whole thing since the flap cannot be changed our but now they just want to remove the flap. We are resisting this due to cold/hot air getting into the attic and affecting our heating/cooling bills. would water and snow or ice also be an issue? We were thinking of suggesting a cap be put on the vent on the roof. Is this a logical solution and what kind of cap should we request?

Thank you!
I would not cover the vent up with anything.If the baffle (flap) is malfunctioned its a great idea to replace the entire vent on the roof.From what it sounds like from your post is everything is intact but the baffle has failed.

A proper removal/replacement installation of a damper vent (baffled vent) for a bathroom fan is as follows;

1.Remove shingles around the vent itself.
2.CAREFULLY remove the vent.
3.Loosen the collar clamp from around the vent hose outlet on the vent.
4.Replace the shingles with NEW right up to the opening in the roof deck.
5.Attach the hose to the new vent.
6.Tighten the collar clamp around the hose attached to the outlet on the vent.
7.Position the vent over the opening taking care not to damage the vent hose.
8.Once proper position is achieved use a crayon and mark the flashing part of the vent on the felt.
9.Use a roofing cement and apply an decent amount of cement within the area marked by crayon.Taking care not to use so much it bleeds out on shingles.
10.Seat the new vent in the area you have applied roofing cement then fasten the new vent.
11.Pre cut and position the next 2 shingles WITHOUT FASTENERS.
12.Remove the 2 unfastened shingles.Apply roofing cement to the flange that will be covered by the 1st shingle.
13.Install the next pre cut shingle then fasten.
14.Seal the remaining exposed flange.
15.Install the final pre cut shingle then fasten.
16.Lift the shingles tabs next to the new vent and apply a bead of roofing cement on both sides.
17.Seal exposed nails used to fasten the new vent.
18.Any shingles affected by this installation should be sealed.Old shingles need a little help sealing to the new ones.I apply a nice bead under any old shingles after a repair.

I know 18 different steps seems like a lot of things to do.But it seems that way step by step but I can remove and replace one in 8-10 minutes.Probably faster in I had a severe thunderstorm rolling in along the tree line.Hahahahaha.

And you will probably not be doing this yourself but since your inquiring about having it done maybe check and see if they are using this same procedure.

And not to mention maybe someone reading your thread wants to replace one.

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Old 11-08-2012, 05:31 PM   #3
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the flap on roof vents for bathroom fans


You forgot a couple steps.
Vent hose slips out of your hand, stop what your doing, go in the attic and stick back up though the hole, get back on roof, see hose has fallen back down the hole. Cover hole with shingles, go have a drink. Forget about it until a new buyer moves in and sees it. Now there on here asking why there's a hole in the roof.
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Old 11-08-2012, 05:57 PM   #4
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the flap on roof vents for bathroom fans


Either that or they post,,"Hose thingy laying in my insulation in the attic"
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