Originally Posted by
cougarmeat
I think the idea behind setting the tarp up - guying out the panel pull - is to put a little tension on the seam so the goo gets into all the nocks and crannies. You may have to set the tarp up upside down because I believe the seal goes on the underside. For one thing, it’s not exposed to the UV as much there. If you wanted to put some on the outside too, I suppose that’s okay.
It would be helpful to have someone help. I use a throw-away brush - the kind with a metal handle Ace sells for 99 cents. You are applying the seal to the brush, or tarp seam, and spreading it with the brush. So you want to keep the fabric a bit taut and still put a little pressure on the brush. Just easier of someone can hold the fabric steady while the seal is applied.
I put a little powder (talc/cornstarch) on it after ti dries to take away any remaining tactiness. Many people don’t. I string the tarp up in the garage - try to give it some warmth to help with curing if it’s cold out.