Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 

Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 11-15-2021, 01:40 PM   #1
Senior Member
 
Brand: Thor Motor Coach
Model: compass 23tw
State: Texas
Posts: 151
THOR #19878
Roof vent caulking repair on TPO roof

Hello all,

Quick question on repairing a 2" gap between a roof fan flange and the TPO roof.

I was up on the roof adding a Maxxfan cover and when inspecting under an existing Maxxfan cover discovered a not sealed 2" long gap.

Turns out there was a screw laying horizontally lodged between the fan flange and TPO roof.

I watched a couple RV101 (dicor) videos that suggest removing as much old caulk, cleaning with their roof cleaner, denatured alcohol, then use their self leveling caulk over screw heads and flange edge.

Question do I really need to purchase their cleaner (any substitutes) and does any adhesive need to be added between the flange and roof before I screw the flange back down?

Cheers!

__________________
roadrunner255 is offline   Reply With Quote
Old 11-15-2021, 01:51 PM   #2
I Think We're Lost!
 
Bob Denman's Avatar
 
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
There certainly is no disadvantage to using their cleaner...
The roof of an RV is no place to be trying to save money. You need it to to be trouble-free.
Good luck!
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
Bob Denman is offline   Reply With Quote
Old 11-15-2021, 02:35 PM   #3
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 12,783
THOR #7035
Quote:
Originally Posted by roadrunner255 View Post
Hello all,

Quick question on repairing a 2" gap between a roof fan flange and the TPO roof.

I was up on the roof adding a Maxxfan cover and when inspecting under an existing Maxxfan cover discovered a not sealed 2" long gap.

Turns out there was a screw laying horizontally lodged between the fan flange and TPO roof.

I watched a couple RV101 (dicor) videos that suggest removing as much old caulk, cleaning with their roof cleaner, denatured alcohol, then use their self leveling caulk over screw heads and flange edge.

Question do I really need to purchase their cleaner (any substitutes) and does any adhesive need to be added between the flange and roof before I screw the flange back down?

Cheers!


You know the cover is not supposed to be sealed to the roof? Obviously the fan flange is, but not the cover.

Quote:
Originally Posted by Installation Instructions
5. A slight air gap between the MAXXAIR base and the roof after installation is normal and permits condensation to escape. Do not apply caulking to this area.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 11-15-2021, 02:53 PM   #4
Senior Member
 
Brand: Thor Motor Coach
State: North Carolina
Posts: 499
THOR #19102
Quote:
Originally Posted by Bob Denman View Post
There certainly is no disadvantage to using their cleaner...
The roof of an RV is no place to be trying to save money. You need it to to be trouble-free.
Good luck!
I agree. Out of all the things to skimp on, the roof is not one of them.
__________________
Campnjoe is offline   Reply With Quote
Old 11-17-2021, 12:04 PM   #5
Senior Member
 
Brand: Thor Motor Coach
Model: compass 23tw
State: Texas
Posts: 151
THOR #19878
Thanks all ordered a gallon of the cleaner and protectant, only a few $ more than the qt.

Btw, one one the vent screws was over tightened.
What do the screws thread into? Wood or metal?

I usually insert a few tooth picks but could also wrap the screw with some mig welding wire.

Thanks
__________________
2020 Thor Compass 23TW
Ford Transit 350 HD 3.2L Power Strokeģ I-5 Turbo Diesel
roadrunner255 is offline   Reply With Quote
Old 11-17-2021, 02:00 PM   #6
Senior Member
 
chunker21's Avatar
 
Brand: Thor Motor Coach
Model: Omni XG32 GONE for good
State: Alabama
Posts: 1,729
THOR #22586
Quote:
Originally Posted by roadrunner255 View Post
Thanks all ordered a gallon of the cleaner and protectant, only a few $ more than the qt.

Btw, one one the vent screws was over tightened.
What do the screws thread into? Wood or metal?

I usually insert a few tooth picks but could also wrap the screw with some mig welding wire.

Thanks
It's hard to say what thor does or doesn't do but previous RVs that I installed a maxi-type fan the vent opening was framed with a 2x3? lumber and the fan flange screwed into it. If you get the roof framing diagram from thor based on your model and vin it might detail the materials and type support up there.
__________________
2022 Renegade Valencia 35MB
2021 Jeep Gladiator
2019 Harley Davidson FLHTC
2012 PT Crusader 355BHQ
chunker21 is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 07:33 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2