MYOG: 3mil Plastic Tarps

Great article Jerry.

I have had great success with clear packing tape, usually 3M brand. I always have some around for shipping but have used it on a few pieces of gear. I used it to join closed sell foam together to make a koozie or insulator for my water bottle which I also use as a cup. The foam pealed off before the tape ever gave way.I have marked ounces and quarts on water bottles and playpus with a sharpie and then covered the writing so it would not rub off.

I have not tried it with polyethylene but bet it would work well. Could also use it to attach 2 pieces together and I bet is much lighter than duct tape.

Keep up the experimentation and good work.

I think the title should read "MYOG: 3mil Plastic Tarps." 3mm would be heavy duty indeed. :)

+1 on using mason's line for guy lines. I started with this stuff because I just had some around, but it's pretty strong.

Just knowing someone would actually use poly for a tarp adds credibility to the idea. Nice!

A quick question: how, in your opinion, is using poly different than Tyvek? Both are light, and cheap.

A Polyethylene tarp, a backpack made from a ForceFlex trash bag, a stove from a Budweiser can, and a sleeping bag from bubble wrap. And people will call you "trail trash"! :)

Jerry,

On the silnylon version of your tarp with the catenary curves, are there 3 seams on the top section of silnylon?

In the picture the material seems to "gather" in the center of the footend of the tarp. It makes me think that there is a third seam.

Party On,

Newton

Edited to add picture for clarification of my question.

Hi Jerry

I haven't used PE sheet for an actual tent, but I have used rolls of it to make patterns for my tents.

Duct tape has a rubber adhesive, and this will creep. OK for quick repairs, but not for anything permanent.

Packaging tape comes in two varieties: cheap Chinese with a lousy adhesive which lets go, and expensive brand-name with a good adhesive. Brands like 3M, Husky, Nitto, Scotch should be fine. As it is a lot lighter than duct tape, try using a couple of layers.

However, really permanent-bonding anything to PE is hard to do without using really specialised adhesives which cost a LOT. Don't bother.

Cheers

Would Gorilla tape have a place here?

>Would Gorilla tape have a place here?

Gorilla tape hasn't slipped in my applications, but it is heavier than most duct tape. Good-quality packing tape sticks to plastic well, and is significantly lighter. I made pack straps from non-reinforced packing tape and stuck them onto a 40-pound bag of wood pellets, and they held fine (total weight of pellet-bag pack, after dumping the pellets: 2.1 oz; waterproof, too).

Also, the comments about using a sheet bend on the corners are right on: no need for tape or grommets, and tension is distributed through material better.

My very first camping experience was when I was only four years old, circa 1964. My dad took my mom, my little brother and me camping along the coast of the Olympic Peninsula. We slept under a plastic sheet every night. I remember waking up to rain on Agate Beach and being amazed that we were dry – that was definitely "the moment" for me!

I agree with Tad, too; it's great to see you using inexpensive, readily available materials. I often wonder how many people never even try getting out because they just can't bear the idea of spending up to several hundred dollars on the gear that's "recommended" in some of the popular magazines.

Again, great article!

In day glow orange not doubt!

Do you have some pictures of where the pole meets the tarp? I'm working on making a tarp tent and haven't figured out the best way to reinforce the area where the pole meets the fabric (the peak). If anybody has any ideas , this would be greatly appreciated. I will post a full write up on my new tent after I get it completed just in case anybody wants to copy. ;)

Just got back from trip on beach of Olympic Peninsula – great place for winter trip – too busy in summer.

I'm surprised there was so much feedback – not made of Cuben or anything.

I'll have to try clear 3M tape next time, I think that might work better than duct tape. Or Gorilla Tape – there's so little used the weight probably doesn't matter.

Tyvek would probably work, I've only used it a little as a ground cloth. Is it wide enough for a tarp without having to sew pieces together? The beauty of poly is they make it in huge sheets.

There are three seams on my catenary curve silnylon tarp. The two ridgelines are cat curves. I keep playing with this. Currently I have a short center pole at the bottom – the two ridges with cat curves don't make sense but it doesn't seem to make any difference. What I should have done is make the tarp with two pieces and one seam down the center, same as other similar tarps, like the Cuben one that BPL sells.

Sheet bend at corners – then the edges of the tarp aren't under tension so they flap around a little, but so what I guess.

I have some bubble wrap, not sure yet what I'll make out of it, maybe a vest, 3M tape should be of use.