Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-17-2013, 11:01 AM   #1
2 Rivet Member
 
1997 25' Excella
Waterville , Minnesota
Join Date: May 2013
Posts: 44
Did I make a Boo Boo?????

I was reading threads about air conditioning problems on this site, only trying to find out where my drain tube (outside) would be on my 25' excella, and saw several people chiming in on "dont use caulking on your ac", well, I may have done it this time, a month or so ago I removed/redid caulking on top and sides of mine. Around the ac unit the PO had "used up" the last of a tube of caulking around where the unit meets the roof, so peeled off the old and replaced it, well, I hope I didnt mess the drain system up any since I saw some drained to the top of the roof instead of a tube. Whats the concensus on this one???
__________________

__________________
Bait guy is offline   Reply With Quote
Old 07-17-2013, 11:06 AM   #2
Ready-to-Travel
 
pmclemore's Avatar

 
2012 30' International
Walkerton , Virginia
Join Date: Dec 2003
Posts: 2,494
The advice is not "don't use caulking", but "don't use silicone caulking on aluminum".

Search sikaflex or vulkem on this forum and you'll find much discussion. The issue with silicone is that it etches aluminum, so prevents a good seal - and is devilishly hard to remove.

Pat
__________________

__________________
--------------------------------------
Somebody, please, point me to the road.

AIR 3987
TAC VA-2
WBCCI 4596
pmclemore is offline   Reply With Quote
Old 07-17-2013, 11:20 AM   #3
2 Rivet Member
 
1997 25' Excella
Waterville , Minnesota
Join Date: May 2013
Posts: 44
thanks for the quick reply, I did use the "good stuff" but was wondering if I should take it off??
__________________
Bait guy is offline   Reply With Quote
Old 07-17-2013, 11:22 AM   #4
Site Team
 
, Minnesota
Join Date: Aug 2003
Posts: 6,940
Images: 59
If you have a Dometic with the curved drain pan you need to be careful not to get caulk in the drainage channels. I cut away a small section of the roof gasket on mine so that it didn't block flow of the condensate to the center drain location.
__________________
markdoane is offline   Reply With Quote
Old 07-17-2013, 11:40 AM   #5
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,279
The only 'caulking' that was used by Airstream on roof A/C units was to seal their proprietary drain pan to the roof. No other sealants were used in the mounting process.

No other RV manufacturer: (1) uses a plastic drain pan and (2) does not use ANY sealant to secure a roof A/C unit to the roof.

Newer model Airstreams have in fact done away with this problem prone drain pan and have started using Dometic's Auxiliary Drain Kit #3107688.016. The roof unit is clamped to the roof using a pair of stacked 1" thick rubberized foam sealing gaskets that are then compressed to 50% of their original thickness when the mounting bolts from the bottom flange are properly tightened.

The only 'sealant' used in this application is to close the channels cut into the upper gasket to allow the drain hose to pass thru.
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:13 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.