Fender well tar?

[s-m-h]

For those of you who have removed the rear fender wells, be it the wheel wells, propane or generator you will have noticed a tar like substance was
used from the factory to seal them to both the floors and the sidewalls. Any suggestions on what to use as a replacement? I was thinking of butyl tape
but any suggestions are welcomed.

TIA

Shawn
--
Shawn Harris
North Vancouver,
Canada
1977 Palm Beach 403

 

[Ken B]

That is a known leak area if you drive in the rain. The water ends up on the rear hallway floor. I used the Rustoleum version of the Flex Seal stuff
that you see on TV. It has never leaked since.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

 

[john r. lebetski]

Through The Roof clear flashing sealant brush on in quarts. About $15 at home centers. I used it 10 years ago up front at the side seams where
factory black stuff had separated. Stopped cold draft.
--
John Lebetski
Woodstock, IL
77 Eleganza II

 

[Ron Clark]

I concur, Through The Roof is really good stuff. Flexible,long-lasting,
good price.
RonC

On Wed, 27 May 2020 06:07:35 -0600 "John R. Lebetski via Gmclist"

> Through The Roof clear flashing sealant brush on in quarts. About
> $15 at home centers. I used it 10 years ago up front at the side
> seams where
> factory black stuff had separated. Stopped cold draft.
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[Jim Hupy]

The wheel wells in a GMC must have been an afterthought, neglected by
engineers, or they thought that no one would ever drive one in the rain.
They absolutely suck. The edge grain of the plywood floors is totally
exposed to water thrown off by the rotating tire treads. Almost like
turning a pressure washer on to that joint. They leak like a sieve.
Particularly the early coaches. And you cannot get behind the bogie boxes
to seal that area easily.
That being said, what's body to do to minimize the leaks? I have
fabbed up some flashings, and sealed them in place with that stuff you see
on T.V. that you spray on a screen door, and make a boat out of it.
Actually, Rustoleum make a similar product. But, that intersection is in
constant motion when you drive the coach. So whatever you use, it must be
very elastic and non rigid, so it moves with the coach, yet stays attached
to the plastic inner fender as well as the plywood floor.
Jim Bounds once said that the only way to keep a GMC from leaking was
to have bigger holes in the floor than you have in the roof. That way, the
water will flow out faster than it leaks in. I used to laugh at that, but
no longer.
Jim Hupy
Salem, Oregon ( where it rains, a lot)

On Wed, May 27, 2020, 8:56 AM rallymaster--- via Gmclist <

>
> I concur, Through The Roof is really good stuff. Flexible,long-lasting,
> good price.
> RonC
>
> On Wed, 27 May 2020 06:07:35 -0600 "John R. Lebetski via Gmclist"

> > Through The Roof clear flashing sealant brush on in quarts. About
> > $15 at home centers. I used it 10 years ago up front at the side
> > seams where
> > factory black stuff had separated. Stopped cold draft.
> > --
> > John Lebetski
> > Woodstock, IL
> > 77 Eleganza II
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[Jim Hupy]

I got to nosing around in my shop, and I came across this stuff. Rust-oleum
Leak Seal. Flexible rubber coating. # 265494 Black. In a 12oz. Spray Can.
It is what I used on a Customers 73 GMC. Never heard back from him if
it stopped the leaks in the wheel wells or not. He is stopping by tomorrow,
if I think of it, I will ask how it worked.
Jim Hupy
Salem, Oregon.

> The wheel wells in a GMC must have been an afterthought, neglected by
> engineers, or they thought that no one would ever drive one in the rain.
> They absolutely suck. The edge grain of the plywood floors is totally
> exposed to water thrown off by the rotating tire treads. Almost like
> turning a pressure washer on to that joint. They leak like a sieve.
> Particularly the early coaches. And you cannot get behind the bogie boxes
> to seal that area easily.
> That being said, what's body to do to minimize the leaks? I have
> fabbed up some flashings, and sealed them in place with that stuff you see
> on T.V. that you spray on a screen door, and make a boat out of it.
> Actually, Rustoleum make a similar product. But, that intersection is in
> constant motion when you drive the coach. So whatever you use, it must be
> very elastic and non rigid, so it moves with the coach, yet stays attached
> to the plastic inner fender as well as the plywood floor.
> Jim Bounds once said that the only way to keep a GMC from leaking was
> to have bigger holes in the floor than you have in the roof. That way, the
> water will flow out faster than it leaks in. I used to laugh at that, but
> no longer.
> Jim Hupy
> Salem, Oregon ( where it rains, a lot)
>
>
> On Wed, May 27, 2020, 8:56 AM rallymaster--- via Gmclist <

>
>>
>> I concur, Through The Roof is really good stuff. Flexible,long-lasting,
>> good price.
>> RonC
>>
>> On Wed, 27 May 2020 06:07:35 -0600 "John R. Lebetski via Gmclist"

>> > Through The Roof clear flashing sealant brush on in quarts. About
>> > $15 at home centers. I used it 10 years ago up front at the side
>> > seams where
>> > factory black stuff had separated. Stopped cold draft.
>> > --
>> > John Lebetski
>> > Woodstock, IL
>> > 77 Eleganza II
>> >
>> >
>> > _______________________________________________
>> > GMCnet mailing list
>> > Unsubscribe or Change List Options:
>> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>> >
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>