Bob, good decision I believe.
On my 78 Royale, SOME JACKASS previous owner used a BONDO LIKE
material on all the roof seams. They didn't smooth it out nor did they
completely fill the seams. Of course it cracked, of course it leaked. So,
bit by bit, I have ground off that miserable crap, and replaced it with
5200 3M flexible sealant and Captain Tully's wicking wonder stuff. Sure
wish I had access to his knuckles. I would break them one after another.
With a smile on my face.
Jim Hupy
Salem, Or
> Jerry. There's just too much risk of breaking the screws off in removal.
> As I see it. I want to flush out all the dirt I can with the power washer.
> Let dry for a week or two. Then seal the seam. Bob Dunahugh
>
>
> ________________________________
> From: Bob Dunahugh
> Sent: Sunday, November 4, 2018 7:05 PM
> To: gmclist
> Subject: RE: Power washing your roof has pros/cons
>
>
> Bruce. I've done the pressurizing the GMC bubble trick. Works great as
> long as you have the volume. Never thought of using a big leaf blower. I
> didn't do it this time. At this point. I've only caulked half of the right
> side. I'm going to do more power washing of what I haven't sealed. I'm
> thinking that there's more dirt that needs to be cleaned out in that
> joint. Bob Dunahugh
>
>
> ________________________________
> From: Bob Dunahugh
> Sent: Sunday, November 4, 2018 1:27 PM
> To: gmclist
> Subject: Power washing your roof has pros/cons
>
>
> I got annul about the roof not being clean on this 73 that I'm
> reconditioning a few months ago. So I scrub, and power washed it. Kept
> getting dirt out of the channel that is between the roof, and side walls.
> After that time we didn't get much rain. Then as more rain moved in later.
> The leaks started to appear. I didn't associate the two till last week. So
> I caulked the area from the back of the door to the front. The leak above
> the door stopped. Then this morning after a night of rain. I found more
> small leaks. So it seems that I just rearranged some of the water
> contaminated dirt. So I think that it's best to do more power washing that
> seam. Get as much of that remaining wet dirt out. Thus reducing the future
> water/dirt from corroding the aluminum roof. Plus stop the frozen water
> from damaging the channel. Then later in the week. Calk that seam to stop
> further water intrusion in that channel. YES. Power washing caused me a
> problem. But will stop future damage. Bob Dunahugh
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