Seam Sealing Polyester

Six Moon Designs
FAQ
N4 :For Polyester Fabric, we recommend either McNett's Seam GripTM or McNett's Seam SureTM.

Thanks for the reply FD – I've used gloob in a tube before and had unsatisfactory results. The material seems to be fairly non-viscous and difficult to apply in a consistent manner….it looked like the work of a drunk painter…might just be me. I was kind of hoping that somebody had swizzled up some sort of secret sauce similar to the silicon and mineral spirits you guys suggest for sil. I'm gonna hold out doing anything until this weekend, then gloob it is!

Go find a 10cc syringe, without needle.

Fill it with about 5cc, and use the needle stub to work the SeamGrip into the threads and under fabric folds.

It is tedious, but very controllable.

Edit to Add: Retract the plunger with care for the refill, to keep the end attached.

Yes , good suggestion.
Bibler used to supply that type of syringe with the seam sealing kit for their tents.

With the sil recipe, I applied the mixture to both the inside and outside of the seam and it really didn't make much difference in appearance or weight, but it gave me peace of mind that it would actually do the job. Would you recommend the same here? Thank you for the advice….I'm gonna grab a syringe and make it work.

I did my SMD skyscape scout a while back using McNetts Seam Grip. Used the tip they gave and some cheap medical gloves to smear it into the seam. Ended up using about a tube and a quarter/ half, with an extra layer on a few high-tension seams. Has been in a few rain storms since and held up like a champ.

EDIT: I only did the outside of the tent, which from what I've read is all that is needed.

Seam Grip will seal much better and last longer. The tube comes with a brush the attaches to the top of the tube. The trick for me is to make sure it isn't applied too thick. Also keep a bucket of water and some rags on hand. When you are halfway down a seam, wet your finger and run it along the seam. Clean finger with rag and water. Continue finishing seam. Repeat the finger procedure. Move to next seam.