3:59 p.m. on April 4, 2012 (EDT)
When I started this project it was in an effort to save tents and make them usable. In an effort to do this I felt I need to come up with a way to make the sticky/tacky material non-tacky without recoating it with a new sealer. There are many times when the urethane starts to break down but it has not broken down enough to affect it's water proofing. In hind sight what I should have done was test the tents water proofness before applying the graphite. By applying the graphite I got rid of the tackiness but did little to nothing to help with the fact that it had lost it's waterproofing on the affected areas. In my case if I were to have applied a sealer and not the graphite I would have achieved my original goals, which was making my tent waterproof and non tacky at the same time.
In your case the tent is still waterproof. So instead of adding another sealer on top of a already unstable urethane, I think that applying a non water soluble substance would be the way to go. If you were to apply a material that is non water soluble such as graphite then it would take care of the tackiness. Here is another dry lubricant that I was unable to find when I did my search last time. I found that may very well work better for what we are trying to do here though I know little about it at the moment. The nice thing about it its it appears to not be water soluble as it is a dry lubricant but it is not black like charcoal or graphite.
Searching late last night after I posted you I found this: PVC Powder - Dry Lubricant - 1.5 lbs. white
http://www.ebay.com/itm/PVC-Powder-Dry-Lubricant-1-5-lbs-white-/400081730630?pt=LH_DefaultDomain_0&hash=item5d26babc46
My thoughts on this is there has got to be a bunch of this stuff floating around in China. I would think that it would be cheaper and it appears to have many, if not all the same, applications as graphite. Though the graphite looks really cool, and I mean really cool, I'm afraid that if you use it on the outside fly of a dome tent and the tent does not have tons of adequate venting to handle the amount of temp change that will occur having a black fly, you will be roasted out of the tent. Since it's on the insde of the fly I think that not oly would there be very little temp change in the tent it will also act as a black out material making it so you could sleep better if you are light sensitive regarding your slumber. I'm thinking of ordering some of this PVC lube to use in the sleeves of my early winters tents as it may also be easier to work with as it's white. I also want some as I will run into tents that need to be treated as most peole would not want to embark on this journey. It is a throw away, disposable world after all.
Hints with working with large amounts of dry lubricants:
You will need a good fine particle filter. No matter how hard you try you will end up inhaling the stuff if you do not use one.
You will want to do this inside in a draft free area. All it takes is some one opening the door and much of the lubricant becomes air born much like fly ash and it will get all over everything.
Do not try this in your living room. I thought I could make it work. I put my tent in front of the wood stove to heat up the offending material to make it more tacky so that the graphite would stick better. I then placed the tent on the floor just in front of the wood stove and started to work. As I was applying the graphite the fan from the wood stove kicked in a and poof. The air was alive for days with the visual and tactical wonder of graphite.
Wear clothing and use materials that your ready to throw away as this stuff does not thoroughly wash out of every thing.
Do not try to apply any of this while the tent is standing . You must do this on a table or better yet on the floor with a hard even surface under it so that you can put much pressure into it. There is a lot of rubbing involved.
When you think your done your not. Take the treated tent part(s) outside and place in the hot sun and then using your already dirty rags continue to rub the stuff in in the hot sun. The more tacky and sticky you can get the material to become the faster and easier it will be for you to impregnate the dry lubricant into the the offending material. This is accomplished by increasing the temp of the offending material.
I found that lightly damp rags and or large sponges work the best as rubbing implements.
When you think you are done then it’s time to take the wet rags/sponges and start cleaning. Dip your rags/sponges in buckets of water until the water stays completly clean. Keep going over the material until you can take white rags and rub the material until nothing comes off of the tent any longer. This will also take a long time.
Take care to not touch any thing that you do not want this stuff on. When your finished let all the rags and sponges dry out and put them in a plastic bag for later use or throw them away. Use clothing that will only be used as work clothes. You can wash them but I would just throw them away when your done esp. when you decide that you never want to do this again.
Remember, this take along time, a lot of effort and a bit of money. You must find good reason to embark upon this process. It is time consuming and is not economical if you have a cheap tent. You either have to have a tent that is rare, or means a awful lot to you for some reason.
Let me know if I can be of further help. Let me know if you come up with anything that I have not been able to find. I’m sure that there very well may be products in your part of the world that are not available to me at this time. Please let me/us know what you do, if anything, and what your experiences are regarding the outcome of your project.