Fixing Wind Noise in 2021 Adventurer 36Z: Weep Hole Covers and Other Solutions

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Members shared experiences with significant wind noise in the 2021 Adventurer 36Z, pinpointing missing or uncovered window weep holes as a primary culprit. The original poster successfully eliminated the noise by temporarily taping over the weep holes, confirming their role in the issue. Permanent solutions discussed include installing new weep hole covers—available in left and right-specific versions—and securing them with silicone or adhesive for long-term durability.<br><br>Additional... More...

strickll

New Member
Joined
Jan 11, 2026
Posts
9
Location
Tampa Florida
Just sharing this, in an attempt to be a good fellow Winnie owner ;). We just purchased a new to us 2021, Adventurer 36Z. Absolutely love the coach, but I noticed pretty loud wind noise on the test drive and on the drive home on the freeway. I googled it and found several recommendations, with the window weep holes being mentioned several times. Just to test the theory I put painters tape over top of the week holes that didn't have covers, then a smaller piece of Gorilla tape on top of the painters tape. Took it out for a test drive and the noise was completely gone. Their position on the window frame looks to be right in the path of the airflow coming off the mirrors. New weep hole covers and a tube of 3M 5200 will be the permanent fix. Wish I'd known the weep hole covers were the cause, I would have made the dealer put new ones one. I made them give me a new TV, new stereo and all new batteries. Lesson learned and hopefully it's helpful for someone else.
 
Glad you found the answer. As to the dealer, they not only knew about the missing covers it's likely they took a few of yours off to fix some other RV that was missing them.

One thing to note... there are left and and right hand specific covers. So, order appropriately. I always got mine on Amazon. I searched by Winnebago part numbers and it was easy. If you can't find them, try Litchsinn RV in Iowa. They have all the specific parts and knowledge you'd need.

I used a dab of clear silicone sealant/adhesive around the outer edge of the cover to secure mine and I never lost one in the 6 years I owned the motorhome after doing that.
 
Glad you found the answer. As to the dealer, they not only knew about the missing covers it's likely they took a few of yours off to fix some other RV that was missing them.

One thing to note... there are left and and right hand specific covers. So, order appropriately. I always got mine on Amazon. I searched by Winnebago part numbers and it was easy. If you can't find them, try Litchsinn RV in Iowa. They have all the specific parts and knowledge you'd need.

I used a dab of clear silicone sealant/adhesive around the outer edge of the cover to secure mine and I never lost one in the 6 years I owned the motorhome after doing that.
I suppose it's possible they took them off to fix another, though, I would hope they weren't cannibilising one coach to take care of another. I'm guessing they've got a better source for them at a lower price than the $28.27 I paid for a pair of lefts and a pair of rights. I sure do appreciate you chiming in though! Just joined this group recently and I'm loving the community here. It's really nice to be part of community where people genuinely look out for one another. Thank you so much!
 
You may want to keep this saved for future reference, much cheaper and super fast delivery. They have perfect matches for most rigs.

Thank you. That's a little better price than I paid on Amzn, but since I was using rewards points they worked out to cost nothing.
 
Glad you found the answer. As to the dealer, they not only knew about the missing covers it's likely they took a few of yours off to fix some other RV that was missing them.

One thing to note... there are left and and right hand specific covers. So, order appropriately. I always got mine on Amazon. I searched by Winnebago part numbers and it was easy. If you can't find them, try Litchsinn RV in Iowa. They have all the specific parts and knowledge you'd need.

I used a dab of clear silicone sealant/adhesive around the outer edge of the cover to secure mine and I never lost one in the 6 years I owned the motorhome after doing that.
Our MH has all the original weep hole covers, not bad for being 26 yrs old this coming April.
 
I'd be darn pleased for weep hole covers to be hanging on at the 26th year mark. Just now noticed your Retired Army coin. Me too! 1976-1996. O5C, 93H, 64C, 88M(p)
 
I'd be darn pleased for weep hole covers to be hanging on at the 26th year mark. Just now noticed your Retired Army coin. Me too! 1976-1996. O5C, 93H, 64C, 88M(p)
Now I've said that, they will likely blow off during my next trip.
Another common source of wind noise is the entry door not fitting tightly at the top. Due to design around the door window, the door frame warps and leaks air. The standard dollar bill test will confirm leakage.
 

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