silicon gutter caulk


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Old 09-14-14, 06:50 AM
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silicon gutter caulk

I used some silicon based gutter/flashing caulking in a corner of gutter. The old stuff was a very strong grey stuff most of which would not come off the gutter.

After a day of cure time the silicon stuff is dry but its rubbery not hard.

Is silicon gutter/flashing caulk any good? It says LIFETIME garuntee on the label, but usually that means the lifetime of a goldfish these days!

If the sucker leaks, what type of stuff should I use that I can get at a big box store?
 
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Old 09-14-14, 07:05 AM
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While I don't know much about gutter caulk, caulking in general isn't formulated to dry to hard substance, it's supposed to be somewhat flexible or rubbery like.
 
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Old 09-14-14, 09:09 AM
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silicone will never harden as does caulk - silicone is a sealant, not caulk,,, out gutter guys never used caulk however he does use silicone or np1
 
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Old 09-14-14, 10:39 AM
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Caulk should never harden, if caulking has hardened it's either past it's useful life or just cheap and not fit for use. Caulks are formulated to bridge a gap and must remain somewhat pliable to be effective.
IMO most anything in a caulking tube is caulk
 
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Old 09-14-14, 01:34 PM
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Needs to stay flexible to handle expansion and contraction of the aluminum at the seams. I use seamer mate seam sealer form HD, works well.
 
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Old 09-14-14, 01:34 PM
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I use gutter seamer mate, gray stuff on gutter components. Never leak. Sticks to everything, so be careful. Amerimax Home Products 10 oz. Gutter Sealant-85148 at The Home Depot
 
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Old 09-14-14, 03:24 PM
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So what about Silicon in general on a gutter? Is that proper?

That seamer mate stuff at homedepot is not silicon.
 
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Old 09-14-14, 03:48 PM
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Pure silicone will degrade in sunlight. Some use acrylic silicone, but I prefer to use a product that has proven to tackle the problems of a specific area. The seamer mate is one of those products.
 
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Old 09-14-14, 04:54 PM
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Seamer Mate seems to be some sort of butyl rubber maybe and would probably be a good choice. Trust the man who uses it on his jobs I say.
 
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Old 09-14-14, 05:05 PM
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Is Silicon used on gutter seams though? I simply bought the tube that said gutter and flashing silicon .... now you guys are making me want to pull it all off and use the Seamer Mate.

Trust the man who uses it on his jobs I say.
ok, what do the gutter dudes and roofers have to say about this?
 
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Old 09-14-14, 05:10 PM
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There is no need to pull it all off. If it is on and you have covered the seam completely and there's no leaks it would be silly to get right back up there and fool with it again. Re-evaluate your choice of sealant when you see leaks and it's time to re-do it. That time will come no matter which sealant you use, just a little sooner for some.
 
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Old 09-15-14, 01:37 PM
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I cant win.

I thought I do another corner, since I ran out of the silicon I used on the other one a few days ago I picked up the seamermate. No sooner than 3 hours after applying the seamermate to the gutter it started to rain. So my repair is underwater and uncured.

It says on the seamermate bottle that it cures underwater.... I doubt that, but we are putting it to the test I guess. I went out during the rain and my leaks appeared to have disappeared though despite the rain!!!
 
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Old 09-15-14, 02:34 PM
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Seamer mate as well as Lexel can cure underwater, so hopefully you have licked the problem.
 
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Old 09-15-14, 02:45 PM
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Never, EVER, lick your gutters. People will think you are weird(er).
 
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Old 09-15-14, 03:02 PM
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leave it to Vic
 
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Old 09-15-14, 03:11 PM
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Methinks he is still on pain medication from the knee surgery.
 
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Old 09-15-14, 03:45 PM
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what is the consistency of the SEAMERMATE when its cured? It says 24 hours, just want to know what it should look like and if it cured with the rain.....
 
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Old 09-15-14, 05:12 PM
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It is gray and should stay fairly pliable, although not runny. It cures chemically, so hopefully you got a good seal.
 
 

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