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Old 05-18-2021, 01:22 PM   #1
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Should these screw heads be sealed?

Hi All,
General maintenance question here. I am checking all of my seals and applying lap sealant and Dicor as needed. None of the screws holding on my gutters are covered with any kind of sealant. Should they be? Is it necessary or is there a reason why they shouldn't be sealed? Thanks for your thoughts.
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Old 05-18-2021, 01:34 PM   #2
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Gutters are usually seated in a butyl tape that seals the screws themselves. I've never had the need to seal the heads too.
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Old 05-18-2021, 02:06 PM   #3
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Quote:
Originally Posted by TitanMike View Post
Gutters are usually seated in a butyl tape that seals the screws themselves. I've never had the need to seal the heads too.
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Old 05-18-2021, 02:31 PM   #4
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Usually there is a vinyl strip which covers the screw heads the full length of the gutters. I'll bet you have the same type of strip on the front and rear vertical seams, around the door and the storage doors accessible from outside.
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Old 05-19-2021, 12:47 PM   #5
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There's no reason not to add sealant. I had some unsealed screws on mine just corrode in half when I went to assure they were tight. As I looked closer I saw several screws that were not straight in so there was a gap behind part of the head for water to collect. I glopped stuff all over all of them.

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Old 05-19-2021, 02:13 PM   #6
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Quote:
Originally Posted by TitanMike View Post
Gutters are usually seated in a butyl tape that seals the screws themselves. I've never had the need to seal the heads too.
That's on the back side. Putting the vinyl insert on the front side to keep water off the screw heads is a prudent thing to do.

FWIW, when I took the roof off the 2002, it had the vinyl insert I took out most of the gutter screws. The only ones that were rusted were the ones that had water intrusion from the d**n awning brackets.

DW wants the awning back on. It's not going on until I can figure out how to make a waterproof mount.
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Old 05-20-2021, 08:03 PM   #7
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Sealant on the threads

Quote:
Originally Posted by Larry-NC View Post
That's on the back side. Putting the vinyl insert on the front side to keep water off the screw heads is a prudent thing to do.

FWIW, when I took the roof off the 2002, it had the vinyl insert I took out most of the gutter screws. The only ones that were rusted were the ones that had water intrusion from the d**n awning brackets.

DW wants the awning back on. It's not going on until I can figure out how to make a waterproof mount.
I've found that putting a bit of sealant on the threads keeps the water out. That way the hole seals around the screw and some squeezes out to seal the screw head as well.

Just a thought
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Old 05-20-2021, 08:17 PM   #8
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Hmm...

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Originally Posted by vasnipe View Post
I've found that putting a bit of sealant on the threads keeps the water out. That way the hole seals around the screw and some squeezes out to seal the screw head as well.

Just a thought
I suppose that wouldn't hurt on the hex-washer head screws that hold the rain gutter on. But they go right through the butyl tape and pick up plenty of sealant.

I am talking about the cast brackets in the shape of a bridge which spans the rain gutter. Two 1/4" lag screws go right through the track in the rain gutter that accepts the vinyl insert. The bracket crushes the grooves that are supposed to accept the vinyl insert, so the assemblers can't insert it there--it's loose across the front. The base of the bracket doesn't sit flat on anything, so you can't use a gasket or vinyl tape there. It's just asking for trouble.
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Old 05-20-2021, 08:46 PM   #9
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Quote:
Originally Posted by Larry-NC View Post
I suppose that wouldn't hurt on the hex-washer head screws that hold the rain gutter on. But they go right through the butyl tape and pick up plenty of sealant.

I am talking about the cast brackets in the shape of a bridge which spans the rain gutter. Two 1/4" lag screws go right through the track in the rain gutter that accepts the vinyl insert. The bracket crushes the grooves that are supposed to accept the vinyl insert, so the assemblers can't insert it there--it's loose across the front. The base of the bracket doesn't sit flat on anything, so you can't use a gasket or vinyl tape there. It's just asking for trouble.
On my old trailer the awning was installed after the vinyl trim was installed.

New trailer doesn't have the bracket you described. Power awning and arm brackets attached to vertical channel on side with awning attached to anchor rail just below gutter.

Less places to leak.
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Old 05-20-2021, 09:09 PM   #10
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Interesting...

Quote:
Originally Posted by TitanMike View Post
On my old trailer the awning was installed after the vinyl trim was installed.

New trailer doesn't have the bracket you described. Power awning and arm brackets attached to vertical channel on side with awning attached to anchor rail just below gutter.

Less places to leak.
Interesting but expensive retrofit for us.
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