How is a vent supposed to be attached to a roof? - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-02-2010, 11:57 PM   #1
Member
 
Paul McEwan's Avatar
 
Name: Paul McEwan
Trailer: 1976 Trillium 13 ft
Posts: 47
Send a message via MSN to Paul McEwan
We took our trailer in to (remains nameless at the moment), to have a fantastic fan (and heater) installed in our 76, 13' Trill and we're scratching our heads at the gobs of caulking used.

My understanding is bitchathane tape should be used with some kind of mechanical fastening finished with a thin bead of caulking. It looks to me like they have used the caulking as the preferred method of fastening.

Before we fire off emails, can anyone enlighten us to these fan retrofits and method of installs?


Click image for larger version

Name:	IMG_0213.JPG
Views:	174
Size:	18.9 KB
ID:	28468


The heater install is worse, (one thing at a time)
__________________

__________________
Paul McEwan is offline   Reply With Quote
Old 06-03-2010, 12:29 AM   #2
Senior Member
 
Raya's Avatar
 
Name: Rachel
Trailer: 1974 Boler 13 ft (Neonex/Winnipeg)
Posts: 3,014
I hate to sound negative, but that looks completely inappropriate to me.

How it should be installed is that you prepare the two mating surfaces (underflange of vent and mating camper surface) with something like acetone or denatured alcohol, and then, if you are using butyl tape, you apply the tape to the full width of the underflange of the vent. If using caulk, I would set the vent in place and then put blue tape on the camper outside of the flange contact area, to make clean up easy, and then lift the vent out again and put the caulk on the underflange, then set it back in place (because with caulk you want squeeze out -- but you *remove* said squeeze-out!).

Next, you install the fasteners (screws, rivets, or etc.), and tighten them in an alternating pattern. Then you clean up any excess sealant (remove it). Then you are done. There is no need or, indeed, desirability (IMO) for any caulk on the outside. The sealant underneath the flange is what does the job. Anything on top usually indicates someone trying to put on a band-aid vs. re-sealing properly (years down the line). In other words, you should basically see no caulk or sealant when the job is done (except maybe some that is slightly "holding up" the flange - but none on the outside).

I'm sorry your vent came back to you like that.

Raya
__________________

__________________
Raya is offline   Reply With Quote
Old 06-03-2010, 12:43 AM   #3
Member
 
Paul McEwan's Avatar
 
Name: Paul McEwan
Trailer: 1976 Trillium 13 ft
Posts: 47
Send a message via MSN to Paul McEwan
Thanks Raya,

I found this link on Fan Tastic Vent installs.

http://www.fantasticvent.com/faq/knowledge...to_install.html

(I never use silicone like it looks they they are)

I prefer your method. Wait 'till you see the furnace.

(my kingdom for someone who knows what they are doing)
__________________
Paul McEwan is offline   Reply With Quote
Old 06-03-2010, 12:43 AM   #4
Moderator
 
Matt in SV's Avatar
 
Name: Matt
Trailer: U-Haul VT16, Escape 19
California
Posts: 987
Registry
Quote:
Before we fire off emails, can anyone enlighten us to these fan retrofits and method...
Here's a link to the installation guide at the manufacturer's site
http://www.fantasticvent.com/faq/knowledge...to_install.html

It's very common, (and recommended here) to daub sealant over the screw heads. There are probably fasteners under all that silicone, but I agree it's a sloppy job.

Regards,

Matt
__________________
Planning our next Escape!
Matt in SV is offline   Reply With Quote
Old 06-03-2010, 12:48 AM   #5
Senior Member
 
Raya's Avatar
 
Name: Rachel
Trailer: 1974 Boler 13 ft (Neonex/Winnipeg)
Posts: 3,014
From another point of view: I come at it from a boating angle - in those installations (hatches, ports, cleats, etc.) we don't put caulking over the fasteners, and the aforementioned parts have to be able to withstand "green water" coming over them while pounding in a seaway. So I still feel that sealant under the flange is the way to go.

I don't meant to sound too opinionated, but it just galls me to see caulking globbed onto the top of something you just had installed.

Not that you should have to, but I'm sure you could make a tidy job of it yourself It's wonderful to find a skilled, conscientious craftsperson; but otherwise it can be the old "if you want something done right..."

Raya

PS: I am with you on the silicone - there is *always* a better sealant, in my opinion.

PPS: The furnace is... worse?!?
__________________
Raya is offline   Reply With Quote
Old 06-03-2010, 07:51 AM   #6
Senior Member
 
Alf S.'s Avatar
 
Name: Alfred
Trailer: 2014 Escape 5.0TA / 2010 Nissan Frontier
Ontario
Posts: 3,816
Registry
Send a message via Yahoo to Alf S.
Hi: Paul McEwan... Here's a couple of pic's of how I did My MaxxFan install.
Alf S. North shore of Lake Erie The last pic. shows a closeup of the mount screwed thru the fiberglass shell into the ply ring sealed with auto fender (butyl rubber)sealer tape. I hope they help!!! Alf
Attached Thumbnails
clamp_ring_in.jpg   MaxxFan_Finished.jpg  

MaxxFan_open.jpg   no_caulking.jpg  

__________________
Alf S. is offline   Reply With Quote
Old 06-03-2010, 11:01 AM   #7
Senior Member
 
Carol H's Avatar
 
Name: Carol
Trailer: 22' Airstream Formerly 16' Scamp
British Columbia
Posts: 11,731
Registry
Paul are you saying they only fastened it with caulking no rivets or bolts? If thats the case I would go back and ask for at least a part refund - pay for the hole being cut out and forget the rest. Regardless of how they actually fastened it the caulking job is IMHO a pretty shocking coming from someone who is charging for their services. If it was mine I would then take it off and clean it up and re install it as it will come out a looking a lot nicer and probable a lot more leak proof. Trust me if I can do it you can do it! LOL

I installed mine last fall pretty well the same way Alf did his. Happy to report that it stood up to pounding rain this past week-end without a drop coming into the trailer.

Keep up your efforts it will all work out at the end of the day.
Carol H is offline   Reply With Quote
Old 06-03-2010, 11:27 AM   #8
Junior Member
 
Name: Chris
Trailer: 2010 Scamp 16 ft
New York
Posts: 18
Although i dont have pictures at the moment, but for what its worth, I just picked up our new 16' Scamp two months ago from the factory and that is excatly how my fantastic fan is installed. lots of beads and globs of silicone.

edit: Ok after looking at your pic a little closer i would say that they went way to heavy on the silicone. My fan has a small bead around the perimeter and a glob on every screw head.
__________________
Christopher Phillips is offline   Reply With Quote
Old 06-03-2010, 11:41 AM   #9
Member
 
Trailer: 73 Boler
Posts: 47
Quote:
Thanks Raya,

I found this link on Fan Tastic Vent installs.

http://www.fantasticvent.com/faq/knowledge...to_install.html

(I never use silicone like it looks they they are)

I prefer your method. Wait 'till you see the furnace.

(my kingdom for someone who knows what they are doing)

To bad your in Vancouver if you were on the island I could help you out.
__________________
K Slade is offline   Reply With Quote
Old 06-03-2010, 01:15 PM   #10
Member
 
Paul McEwan's Avatar
 
Name: Paul McEwan
Trailer: 1976 Trillium 13 ft
Posts: 47
Send a message via MSN to Paul McEwan
Thanks everyone. I just wanted to make sure because it is so deliberate. coming from a construction background i am now in marketing, living in the city it bugs the hell out of me that time and space limit me to having inferior work done. i strongly believe in maintaining as a green approach to ownership and if i had the space for the tools and work area, i would do it myself. is that the only way to refurbish these beauties? a change in entire lifestyle? i'm looking to re-build our van and camperize it too. vehicles don't need to be thrown away every 10 years but i am finding this too something DYI centric. (lack of capitalization and spelling errors to be blamed on the phone's keybord) cheers!
__________________
Paul McEwan is offline   Reply With Quote
Old 06-03-2010, 02:20 PM   #11
Commercial Member
 
Robert Johans's Avatar
 
Name: Robert
Trailer: Nest Caravans
Oregon
Posts: 822
Registry
If you don't mind, allow me to toot my own horn. Check out my website, and this recent thread: http://www.fiberglassrv.com/board/index.ph...38632&st=30

If I can be of any help, let me know.
__________________
Robert Johans is offline   Reply With Quote
Old 06-03-2010, 06:10 PM   #12
Senior Member
 
peterh's Avatar
 
Name: Peter
Trailer: 2005 19 ft Scamp 19 ft 5th Wheel
Oregon
Posts: 1,519
Registry
Quote:
Thanks everyone. I just wanted to make sure because it is so deliberate. coming from a construction background i am now in marketing, living in the city it bugs the hell out of me that time and space limit me to having inferior work done.
Which is why I do most of our home and trailer repairs and remodels. Most of those in the construction/handyman trade go for cheap and easy, not what's aesthetic or built to last. They're not craftsmen.
__________________
peterh is offline   Reply With Quote
Old 06-03-2010, 06:21 PM   #13
Senior Member
 
Bud Kennedy's Avatar
 
Trailer: 1984 U-Haul / 02 Mazda pick up
Posts: 174
I would demand at least a partial refund AND ask for them to pay to clean that mess up!

Thats the poopiest job I have ever seen from a "professional".
__________________
Bud Kennedy is offline   Reply With Quote
Old 08-20-2010, 05:04 PM   #14
Junior Member
 
Trailer: 1960s 10 ft Burro
Posts: 19
Hi-we are trying to install our Fantastic vent fan ourselves, and I have searched the threads and there is often a reference to wood for screwing into, your photo and thread mention a plywood ring...was that ring something you added yourself? How did you affix it to the ceiling? We are scratching our heads , the factory customer service told us to build a wood trim to screw into , much like the threads I have searched here...but no one is saying how to affix the wood to the fiberglass ceiling...we are feeling real stupid right now. Can someone give us some advice, direction or encouragement?
__________________

__________________
Rose Feys 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Roof Vent Kevin K Modifications, Alterations and Updates 24 10-09-2014 10:48 AM
Roof Rack attached to Frame jarrett beatty Modifications, Alterations and Updates 3 07-14-2010 01:34 PM
Roof Vent Mike Whitney Problem Solving | Owners Helping Owners 10 02-27-2010 09:18 AM
Roof Vent gregziglar Modifications, Alterations and Updates 3 08-08-2006 04:37 PM
new roof vent ?? Dan Quinn General Chat 7 01-11-2006 11:29 AM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:24 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.