Home » Public Forums » GMCnet » Caulking for outside (This has always been a hot topic, everyone has their favorite)
| Caulking for outside [message #366878] |
Mon, 20 September 2021 12:40  |
GatsbysCruise
Messages: 261
Registered: January 2017
Location: Waukegan, Illinois
Karma: 3
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Senior Member |
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Last time I caulked my GMC I used the most popular and promising caulk that was recommended here.
It lasted a year or so but when I inspected I found that it either shrunk or actually deteriorated away,
exposing seams to weather. Mind you this was touted as the best to get at the time.
I am offered now, another option, called LEXEL
Comes in clear or extreme WHITE, applied with a caulking gun (your own), when cured it is
said to be water proof, extremely durable, uv resistant, won't wear away by weather.
LEXEL is used by some Southern homesteads and they recommend this with no second options. The vids
they show using LEXEL are thorough and to the point. They also talk about results over time which
are impressive.
I'm looking for any others who may have used it.
The link is here:
https://www.amazon.com/dp/B01LZA2H2L/ref=twister_B07HFBQNBF?_encoding=UTF8&coliid=I3PU5XW33KJJVJ&colid=2ZMVUPB3MJHH9&th=1
and there are plenty of questions and reviews about the product.
For the most part, the reviews are to the point and informative.
By what they are saying, LEXEL seems to be far ahead of most we have been using.
What say YE
thankyou.
GatsbysCruise. \
74GMC260 Former Glacier Model style. \
Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO - UBUNTU VOYAGER - Berzin Auto Center
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| Re: Caulking for outside [message #366884 is a reply to message #366878] |
Mon, 20 September 2021 15:07  |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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I believe Lexel is used a lot in the air conditioning industry to seal ductwork, etc. It sounds like it should be a good choice for our body seams as well.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: Caulking for outside [message #366885 is a reply to message #366878] |
Mon, 20 September 2021 18:39 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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Two other clear products that may be similar are “Through the roof” and “Ultima”. About $8 each tube. I used Through the roof between the firewall and “cheeks” as air was coming in. Has held up 10 years but not in UV. So hard to do forward time testing without actually giving it time.
John Lebetski
Woodstock, IL
77 Eleganza II
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| [GMCnet] Re: Caulking for outside [message #366893 is a reply to message #366885] |
Mon, 20 September 2021 22:53 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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I'd never heard of it before, so this may be a completely worthless
comment: I rely pretty heavily on the "Star" ratings on Amazon -- but I
seldom pay any attention to any except the 1-Star ratings. In this case,
those convince me that I won't be buying any LEXEL. I'll stick with the PL
Urethane caulk I've used for the past 20 years.
Ken H.
On Mon, Sep 20, 2021 at 7:39 PM John R. Lebetski
wrote:
> Two other clear products that may be similar are “Through the roof” and
> “Ultima”. About $8 each tube. I used Through the roof between the
> firewall and “cheeks” as air was coming in. Has held up 10 years but not
> in UV. So hard to do forward time testing without actually giving it
> time.
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
> _______________________________________________
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Re: Caulking for outside [message #366895 is a reply to message #366893] |
Mon, 20 September 2021 23:37 |
GatsbysCruise
Messages: 261
Registered: January 2017
Location: Waukegan, Illinois
Karma: 3
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Senior Member |
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I find the 1 star ratings made by people who use a product wrong or can't figure out the directions and write to hear themselves.
On Amazon you have to read ALL the reviews to get a feeling for the product, also the questions help too.
I used the popular sealant at the time when I redid the outside of the GMC but it failed badly. Where I thought I had good seals, I had
sealant missing or worn away by weather. it was supposed to take paint but the paint was all gone from the sealant so much for that. So
I decided to look for a different product. This is not latex so it wont support mold and should hold paint. we will see.
I mentioned a video on yTube that talks STRONGLY for this product. in his words, he has NEVER had a failure on any seals he has made.
I've used almost everything suggested here and they all fell short, esp over time. This LEXEL seems worth a shot when a farmer is using it
and says its the best hes ever used.
Just asking what ya all have tried so yeah.
GatsbysCruise. \
74GMC260 Former Glacier Model style. \
Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO - UBUNTU VOYAGER - Berzin Auto Center
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| Re: Caulking for outside [message #366896 is a reply to message #366878] |
Tue, 21 September 2021 00:03 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
Karma: 4
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Senior Member |
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I use sikaflex in critical areas and other polyurethanes around windows etc. Roof seams and through fixtures got Eternabond.
JWID (and ol' Leaky no leak no more)
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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| [GMCnet] Re: Caulking for outside [message #366899 is a reply to message #366878] |
Tue, 21 September 2021 08:25 |
Dave Stragand
Messages: 307
Registered: October 2017
Karma: 0
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Senior Member |
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I have used Lexel clear for dealing around our new LED marker lights, and filling the bolt holes on top of them. After a year, it seems fine… still clear and flexible. Hardly a long-term test, but so far, so good.
-Dave
1978 Transmode near Pittsburgh
> On Sep 20, 2021, at 9:21 PM, slc wrote:
>
> Last time I caulked my GMC I used the most popular and promising caulk that was recommended here.
>
> It lasted a year or so but when I inspected I found that it either shrunk or actually deteriorated away,
> exposing seams to weather. Mind you this was touted as the best to get at the time.
>
> I am offered now, another option, called LEXEL
>
> Comes in clear or extreme WHITE, applied with a caulking gun (your own), when cured it is
> said to be water proof, extremely durable, uv resistant, won't wear away by weather.
>
> LEXEL is used by some Southern homesteads and they recommend this with no second options. The vids
> they show using LEXEL are thorough and to the point. They also talk about results over time which
> are impressive.
>
> I'm looking for any others who may have used it.
>
> The link is here:
> https://www.amazon.com/dp/B01LZA2H2L/ref=twister_B07HFBQNBF?_encoding=UTF8&coliid=I3PU5XW33KJJVJ&colid=2ZMVUPB3MJHH9&th=1
>
> and there are plenty of questions and reviews about the product.
> For the most part, the reviews are to the point and informative.
>
> By what they are saying, LEXEL seems to be far ahead of most we have been using.
>
> What say YE
>
> thankyou.
> --
> GatsbysCruise. \
> 74GMC260 Former Glacier Model style. \
> Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO -
> UBUNTU VOYAGER - Berzin Auto Center
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
1978 Transmode (403)
Pittsburgh, PA
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| [GMCnet] Re: Caulking for outside [message #366900 is a reply to message #366899] |
Tue, 21 September 2021 09:02 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Nothing is permanent. A few things are inevitable, like aging, taxes, and
death. But sealants are not on that list.
The top of the GMC, where the end caps meet the aluminum roof are a
classic situation of two dissimilar material with different coefficients of
expansion joined without an expansion joint. So, the sealant that you
select has to perform that job. Some do it better than others. But, if it
says "containes silicone" you are better off not using it. Based on my 40
odd years of trying to keep stuff from leaking here in rainy Oregon.
Far better to build a roof over your coach, but Sikaflex is good
stuff, as is a number of 3M products like 5200.
Jim Hupy
Salem, Oregon
On Tue, Sep 21, 2021, 6:36 AM Dave Stragand wrote:
> I have used Lexel clear for dealing around our new LED marker lights, and
> filling the bolt holes on top of them. After a year, it seems fine… still
> clear and flexible. Hardly a long-term test, but so far, so good.
>
> -Dave
> 1978 Transmode near Pittsburgh
>
>> On Sep 20, 2021, at 9:21 PM, slc wrote:
>>
>> Last time I caulked my GMC I used the most popular and promising caulk
> that was recommended here.
>>
>> It lasted a year or so but when I inspected I found that it either
> shrunk or actually deteriorated away,
>> exposing seams to weather. Mind you this was touted as the best to get
> at the time.
>>
>> I am offered now, another option, called LEXEL
>>
>> Comes in clear or extreme WHITE, applied with a caulking gun (your
> own), when cured it is
>> said to be water proof, extremely durable, uv resistant, won't wear away
> by weather.
>>
>> LEXEL is used by some Southern homesteads and they recommend this with
> no second options. The vids
>> they show using LEXEL are thorough and to the point. They also talk
> about results over time which
>> are impressive.
>>
>> I'm looking for any others who may have used it.
>>
>> The link is here:
>>
> https://www.amazon.com/dp/B01LZA2H2L/ref=twister_B07HFBQNBF?_encoding=UTF8&coliid=I3PU5XW33KJJVJ&colid=2ZMVUPB3MJHH9&th=1
>>
>> and there are plenty of questions and reviews about the product.
>> For the most part, the reviews are to the point and informative.
>>
>> By what they are saying, LEXEL seems to be far ahead of most we have
> been using.
>>
>> What say YE
>>
>> thankyou.
>> --
>> GatsbysCruise. \
>> 74GMC260 Former Glacier Model style. \
>> Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS
> FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO -
>> UBUNTU VOYAGER - Berzin Auto Center
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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GMCnet mailing list
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| Re: [GMCnet] Re: Caulking for outside [message #366902 is a reply to message #366900] |
Tue, 21 September 2021 10:23 |
boybach
Messages: 566
Registered: December 2020
Location: Vancouver Island
Karma: 4
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Senior Member |
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James Hupy wrote on Tue, 21 September 2021 07:02
The top of the GMC, where the end caps meet the aluminum roof are a
classic situation of two dissimilar material with different coefficients of
expansion joined without an expansion joint.
These two seams are the place for a 2" wide strip of Eternabond in addition to the gipe of choice. They will not leak after THAT treatment.
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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| [GMCnet] Re: Caulking for outside [message #366906 is a reply to message #366878] |
Tue, 21 September 2021 11:14 |
Marsh Wilkes
Messages: 155
Registered: January 2004
Karma: -3
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Senior Member |
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I have used Lexel for years, it really does hold up.
Just be forewarned, it's as much an adhesive as a sealer, if you
mount something with Lexel IT'S THERE, it will bend or break before
coming off! It really is great stuff in terms of sealing leaks, It will
never
harden and crack, not in my experience. It will harden to some degree after
years of sun exposure but still retain some pliability. It is ideal for
non-visible
areas like a roof top, just make sure you have it right, because you are not
gonna
go back and pull it out and redo it the way you would RTV silicone. It's a
little difficult
to work with, cosmetically that is. With disposable gloves and acetone or
mineral spirits you
can smooth it out and clean up excess with soaked rags. It's still difficult
to make it look good.
I use a Makita cordless caulking gun, not cheap, but it gives excellent
control, no pumping, just
a continuous adjustable flow speed, and when you let off the trigger it
sucks back a little.
Marsh (rarely post anymore) Wilkes
Perry Fl
-----Original Message-----
From: slc
Sent: Monday, September 20, 2021 1:40 PM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Caulking for outside
Last time I caulked my GMC I used the most popular and promising caulk that
was recommended here.
It lasted a year or so but when I inspected I found that it either shrunk or
actually deteriorated away,
exposing seams to weather. Mind you this was touted as the best to get at
the time.
I am offered now, another option, called LEXEL
Comes in clear or extreme WHITE, applied with a caulking gun (your own),
when cured it is
said to be water proof, extremely durable, uv resistant, won't wear away by
weather.
LEXEL is used by some Southern homesteads and they recommend this with no
second options. The vids
they show using LEXEL are thorough and to the point. They also talk about
results over time which
are impressive.
I'm looking for any others who may have used it.
The link is here:
https://www.amazon.com/dp/B01LZA2H2L/ref=twister_B07HFBQNBF?_encoding=UTF8&coliid=I3PU5XW33KJJVJ&colid=2ZMVUPB3MJHH9&th=1
and there are plenty of questions and reviews about the product.
For the most part, the reviews are to the point and informative.
By what they are saying, LEXEL seems to be far ahead of most we have been
using.
What say YE
thankyou.
--
GatsbysCruise. \
74GMC260 Former Glacier Model style. \
Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER
THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO -
UBUNTU VOYAGER - Berzin Auto Center
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