Typically as cord or (polyester) woven fabric.Īdhesive that activates and is applied using pressure.Īdhesive that activates and is applied using heat.ĭo I need to seal seams to make my project water-resistant? Dyneema composite fabric (DCF) is made of dyneema fibers laminated between two sheets of mylar.Ī standard PET in fiber/fabric form.

Comes in sheet form rather than a fabric made of fibers.Ī specific type of PET that comes in sheet form. The adhesive side often has a line/release paper on it.Ī type of polyester (plastic) commonly used as a waterproofing layer in laminates like Xpac. One side has adhesive, the other has a carrier material, often plastic or fabric for strength. The difference between transfer tape and double-sided or double-coated is that the double-sided has a layer of PET sandwiched between two layers of adhesive. You apply the tape, then peel the liner to expose the other side of the adhesive. Often confused with transfer tape.Ī layer of adhesive that comes on a roll, with a liner paper/release paper on one side.

See table below for tape options, suppliers, and pricing.Ī plastic carrier with adhesive on both sides. TL DR: Off-the-shelf single-sided DCF tape and 3M 9485 transfer tape are popular choices for waterproofing and reinforcing PU-coated and PET-faced fabrics, but using certain seams can make a bag pretty water resistant without taping. If you have info or experience to share, please add it in the comments!

Tapes for waterproof breathable fabrics are not covered. Heat-sensitive adhesives are generally difficult to use and less favored, so they are also not covered here in detail. I finally dove down this rabbit hole and wanted to share what I learned! This post was not intended to cover liquid sealants, but limited info is provided below, as they can be very effective. This post attempts to collect and summarize info from this community and other sources to help makers understand what tapes are available, and to provide some info on when and how to use them. There are are a wide range of types, materials, methods for using seam tape. Seam tape is often used to add water resistance and/or structural integrity to seams.

Blackjack waterproofing and seam tape