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Second layer of seam sealer over first?

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Old 12-20-16 | 10:51 AM
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Second layer of seam sealer over first?

Asking about putting a second layer of Mcnett seam sure sealer on over the first, completely dry layer, to really try to get it sealed.

My faithful old Eureka Zeus II completely lost all its factory tape last year. Found out about it one night in the middle of nowhere when it all seemed to spontaneously come loose at once. Exciting night. When I got home I removed all the tape and stored it to work on later. Amazingly it all pealed of really cleanly in long solid strips.

Last night I decided to apply some sealer, a buddy gifted me an unopened bottle of mcnett seam sure that he got for his Big Agnes that did the same thing(but the tape on his just cracked and will not come off so he gave up).

Took my time, did an OK job I think, used an acid brush instead of the bristles on the bottle. Did it in my work shop where it was pretty warm.

Ten hours later I inverted the top and poured water in it. It took about five minutes, and one drip started. Got me wondering about the second go over with the sealer, thought I would ask here for some advice. Thanks for any input.
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Old 12-20-16 | 11:01 AM
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Thread absorbs seam sealer , first Right? needle holes are a water entry ..


Seam tape never lasts long crotch seams of rain pants really go away soon when riding a bike.
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Old 12-20-16 | 11:14 AM
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Originally Posted by shipwreck
Asking about putting a second layer of Mcnett seam sure sealer on over the first, completely dry layer, to really try to get it sealed.

My faithful old Eureka Zeus II completely lost all its factory tape last year. Found out about it one night in the middle of nowhere when it all seemed to spontaneously come loose at once. Exciting night. When I got home I removed all the tape and stored it to work on later. Amazingly it all pealed of really cleanly in long solid strips.

Last night I decided to apply some sealer, a buddy gifted me an unopened bottle of mcnett seam sure that he got for his Big Agnes that did the same thing(but the tape on his just cracked and will not come off so he gave up).

Took my time, did an OK job I think, used an acid brush instead of the bristles on the bottle. Did it in my work shop where it was pretty warm.

Ten hours later I inverted the top and poured water in it. It took about five minutes, and one drip started. Got me wondering about the second go over with the sealer, thought I would ask here for some advice. Thanks for any input.
Test and apply only where necessary. When you get too much seam sealer built up, it loses some of its flexibility. A single coat works great and is flexible enough that you never need to worry, but subsequent coats may end up too thick, and they'll crack when the fabric is folded or crumpled up.
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Old 12-20-16 | 12:01 PM
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Originally Posted by mdilthey
Test and apply only where necessary. When you get too much seam sealer built up, it loses some of its flexibility. A single coat works great and is flexible enough that you never need to worry, but subsequent coats may end up too thick, and they'll crack when the fabric is folded or crumpled up.
Thats probably the soundest thing Im gonna get here. thanks. Never used seam sealer before. This is pretty much the only tent I have ever used a lot, and it never leaked before so have had no issues.

I do have two other tents, I might go over them before the rest of the bottle goes bad. Both of them have taped rainflys, unlike the single wall Zeus.
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