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04-04-2021, 11:09 PM
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#1
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Member
Join Date: Apr 2021
Posts: 46
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Caulking
Hello. Happy Easter to all. I have a question. Does anyone know what kind or does it matter the caulking on roof around air vents and ac unit. Does it need to be a certain brand. I cleaned off roof and notice some caulking cracks I would like to fix  Thank you
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04-04-2021, 11:46 PM
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#2
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Senior Member
Join Date: Jun 2020
Posts: 190
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Quote:
Originally Posted by gschneider12
Hello. Happy Easter to all. I have a question. Does anyone know what kind or does it matter the caulking on roof around air vents and ac unit. Does it need to be a certain brand. I cleaned off roof and notice some caulking cracks I would like to fix Thank you |
I would suggest Dicor self leveling caulk. You just run a bead along the caulk you have now and it self levels. Pretty nice stuff if you ask me 
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2019 Ram Big Horn 6.7 Cummins
2020 Rockwood Ultra Lite 2304DS
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04-04-2021, 11:50 PM
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#3
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Senior Member
Join Date: Mar 2019
Location: Joliet, IL
Posts: 1,342
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Quote:
Originally Posted by gschneider12
Hello. Happy Easter to all. I have a question. Does anyone know what kind or does it matter the caulking on roof around air vents and ac unit. Does it need to be a certain brand. I cleaned off roof and notice some caulking cracks I would like to fix Thank you |
Welcome to the forum. 
Use Dicor self leveling lap sealant on all parts of the the roof. Use Geocel on sides. Never use silicone caulking anywhere. I have also used Eternabond tape first in addition to the Dicor.
https://www.amazon.com/Dicor-551LSW1...s%2C203&sr=8-5
https://www.amazon.com/s?k=geocel+23...s_ts-doa-p_7_9
https://www.amazon.com/EternaBond-RS...s%2C199&sr=8-3
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2018 Cedar Creek 36CK2 (40.5ft)
TST Cap System (Tire Monitoring)
2021 Chevy 3500HD Crew Cab 4X4 DRW Duramax (replaced 2015 Chevy 2500HD Crew Cab 4X4 Duramax)
Curt A25 5th Wheel Hitch (replaced Demco 18K Auto-slide)
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04-05-2021, 12:01 AM
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#4
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Member
Join Date: Apr 2021
Posts: 46
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Thank you
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04-05-2021, 12:10 AM
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#5
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Senior Member
Join Date: Jun 2020
Posts: 190
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Quote:
Originally Posted by gschneider12
Thank you
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This stuff right here is what you want for your roof.
https://www.amazon.com/Dicor-501LSW-...omotive&sr=1-2
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2019 Ram Big Horn 6.7 Cummins
2020 Rockwood Ultra Lite 2304DS
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04-05-2021, 12:15 AM
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#6
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Member
Join Date: Apr 2021
Posts: 46
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Wow. U even gave me a link. Thank you very much. Have a great night
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04-09-2021, 09:50 AM
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#7
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Member
Join Date: Mar 2021
Posts: 31
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Use the self leveling on flat stuff and non sag on vertical stuff... both available on amazon
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2015 Grey Wolf Limited CCKT26DBH
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04-09-2021, 10:20 AM
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#8
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Senior Member
Join Date: Oct 2018
Location: San Jose, CA
Posts: 998
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I just wanted to add, as other may read this too and assume Dichor is the sealant for all cases.
Although probably not the case for the OP, you should make sure your roof material is the MFG preferred sealant & can accept Dichor. Dichor is excellent and for most RVs and Trailers you will have no issues.
I have a fiberglass roof , Dichor does not stick to my FR3 Roof. Yes it does seal but I can peel it off with my finger's in once piece even after cured. MFG requires Heng's 95502 White NuFlex #311. For some reason that stuff is a bit different in chemistry and will not simply peel up.
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2019 FR3 33DS Motorhome
650 Watts Solar, 400Ah LIFEPO4, 2000 Watt Inverter, 40A DC/DC Charger, SumoSprings, Roadmaster Steering Stabilizer, BlueOx Trac Bar, Truma AquaGo WH, NVIDIA Shield TV
Days Camping
2019 57:2020 20:2021 30:2022 46:2023 47:2024 7
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04-09-2021, 12:48 PM
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#9
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Pseudonym
Join Date: Mar 2021
Posts: 265
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Quote:
Originally Posted by LittleBill
Welcome to the forum.
Use Dicor self leveling lap sealant on all parts of the the roof. Use Geocel on sides. Never use silicone caulking anywhere. I have also used Eternabond tape first in addition to the Dicor. |
I'm a newbie. Why not silicone?
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2021 Shasta 18FQ
2023 Ram 1500 4X4 Lone Star Crew Cab 5.7L HEMI eTorque
Attachment 251949
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04-09-2021, 12:51 PM
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#10
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Senior Member
Join Date: Oct 2018
Location: San Jose, CA
Posts: 998
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Quote:
Originally Posted by BrandonSmith
I'm a newbie. Why not silicone?
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Im sure there are more reasons but It will damage the rubber roofs, not UV protectant and will disintegrate quick
__________________
2019 FR3 33DS Motorhome
650 Watts Solar, 400Ah LIFEPO4, 2000 Watt Inverter, 40A DC/DC Charger, SumoSprings, Roadmaster Steering Stabilizer, BlueOx Trac Bar, Truma AquaGo WH, NVIDIA Shield TV
Days Camping
2019 57:2020 20:2021 30:2022 46:2023 47:2024 7
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04-09-2021, 01:20 PM
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#11
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,855
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Quote:
Originally Posted by BrandonSmith
I'm a newbie. Why not silicone?
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You should have roof maintenance paperwork in your owners packet. Read that for proper caulking and cleaning instructions. NEVER silicone.
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Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.) 
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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04-09-2021, 08:52 PM
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#12
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Pseudonym
Join Date: Mar 2021
Posts: 265
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Quote:
Originally Posted by bikendan
You should have roof maintenance paperwork in your owners packet. Read that for proper caulking and cleaning instructions. NEVER silicone.
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Thanks. I’m aware of the roof, it was the previous post I quoted said never use silicone on anything that piqued my interest considering there is silicone caulking inside my camper.
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07-07-2021, 07:39 PM
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#13
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Junior Member
Join Date: Aug 2018
Posts: 19
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The Forest River manual for my 2017 FR3 30DS says that I have a Superflex roof and that only sealants from Alpha can be used on it. That stuff is not easy to get in Canada and very expensive. Has anybody dared to use Dicor on a Superflex roof? What happened?
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Herbert & Inge, German Pinscher Codicayoti,
2017 Forest River FR3 30DS,
2016 Ford Edge AWD 3.5L
Cheers from the top of the Okanagan
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07-07-2021, 07:45 PM
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#14
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Senior Member
Join Date: Aug 2014
Location: Northern KY
Posts: 5,725
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Try Eternabond tape for sealing the roof...
it sticks to everything and will last a decade or more... no more caulk that dries and shrinks and peels off...
http://https://www.forestriverforums...nce-90060.html
EternaBond
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"nothing can now be believed which is seen in a newspaper. Truth itself becomes suspicious by being put into that polluted vehicle."
Thomas Jefferson to John Norvell pg. 2, June 11, 1807
2014 Shamrock 183
2014 RAM 1500 Bighorn Crew Cab, HEMI, 3.21 gears, 8 Spd, 4X4 TST TPMS
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