I recently buy my first NRF's and I have one problem.
I don't know what tape to use for protecting downside of the frame after I'm done with tensioning.
Stretch devices sells plastic mesh protectors that wrap around the frames after the mesh is stretched. There is a blue plastic tape that many use to tape up screens with the intention of leaving the tape on. I've tried it, but find it leaves a residue once the tape starts to come off and has to be replaced. I tend to not put anything on my retensionables that will leave a mess because a lot of mine were purchased used, and apparently a lot of printers' frames are generally kept filthy. It took me forever to clean them, so I like to keep 'em clean. If you're careful with your screens, I'm not sure how much additional mesh life you'll gain using the mesh protectors or tape. Frankly, I always seem to get a tear at a corner that wasn't sufficiently softened, or a small hole in the center of the mesh or somewhat near the frame edge. Tape or protectors wouldn't have helped. If I had to pick between the two, I'd buy the mesh protectors. They're not cheap, but I guess they last indefinitely, which the tape won't, and they don't give the tape away either.
That's all I use. I started out with 6 new wood frames that warped so bad that I couldn't do any multi-color stuff that had close registration. I decided then to use nothing but retensionables. With the Newmans, if you haven't already, get the big open-end wrench they sell. I know it's expensive, but the leverage you get when tensioning the frames is worth it. I've got 6 Diamond-Chase retensionables, and I have to use a crescent wrench to tighten those, and it's a struggle. The Newman's are a breeze with that long wrench. I've got about 30 Newmans.
We use three different types of tape with ours. First we put on the plastic fabric protectors. Then we use the 3" white chemical resistant tape on the outside. On the inside we use PMI split tape 3" wide. Then for quaility control we use our regular 2" clear on the outside to tape up close to the image. I know it seems like a lot of work put it only takes about 4 minutes to do. It will save you time with pinholes, emulsion breakdown, and screen rips.
We leave the white chemical resistant tape on. The PMI and clear get taken off for reclaiming. We have a shorter coater to coat these screens, so not to coat over the white tape. Before we coat we have the fabric protectors on and the white tape.
Newman roller frames 
