Boundary Waters Quetico Forum :: Gear Forum :: Seam sealing CCS Tundra tarp
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Author | Message Text | ||
TAS58 |
Question: Is there any reason to not flip it over (after curing) and seal the top side of the seams? Thanks for the input. Tom |
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amhacker22 |
It won’t do any harm, but I don’t think it’s necessary. |
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mgraber |
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Tomcat |
For proper adhesion it is important to use a silicone based seam sealer on silicone and a polyurethane based seam sealer on polyurethane. IMHO, as long as you use the appropriate seam sealer you should be able to apply it to whichever side or sides you desire. |
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TAS58 |
Tomcat: "I am not familiar with the waterproof coating or coatings used on the CCS Tundra tarps but it is common practice for manufactures to use ripstop nylon fabric that has a silicone based waterproofing on one side and a polyurethane based waterproofing on the other. Using polyurethane based waterproofing allows you to increase the hydrostatic head rating beyond that of using silicone based waterproofing alone. There are advantages and disadvantages to both silicone and polyurethane waterproofing but the increased strength and durability of silicone over polyurethane make advertising as silnylon attractive for marketing. Adhesion is the reason for my question. CCS recommends sealing the underside but it sound like they basically say that because it's easier, not necessarily because of the sealant not sticking. I am using the sealant that they supplied with the tarp so I assume it should be compatible with both sides of the tarp but we all know assumptions can sometimes cause unintended consequences. Appearance may also be a reason they recommend sealing the underside. Sloppy application of sealant can detract from a nice, clean look which is more noticeable from the outside IMO. It just seems to make logical sense to seal from the top side and I do have enough sealant to do both sides so I figured "why not?" but I thought I'd ask first. What I really need to do is contact CCS and ask them. It's a beautiful tarp and it wasn't inexpensive. I just want to treat it properly. |
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DanCooke |
Starting on the bottom side, the side opposite the side the of open loops on the seams. Skin coat the exposed seam and the hidden one as well. The pole patch seal the four exposed seams and the one corner to corner. Do not seal on the edges. |
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mgraber |
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