Strengths
What it’s good at
Instant, permanent repairs on clothing, canvas tarps, leather boots, outdoor gear, and upholstery — forms a flexible, breathable waterproof bond in 3 minutes without heat or ironing.
Limits
Where it falls short
Not recommended for sheer silk, 100 % polyester, or hard non-porous plastics and metals.
Specifications
Manufacturer specifications
Every number below is quoted from the manufacturer’s own documentation, linked at the end of the row.
- Initial set
- 3 min — Forms a usable, flexible bond within 3 min[1]
- Fixture time
- 15 min — Safe to machine wash and dry after 15 min without heat setting[1]
- Full cure
- 2 h — Maximum natural latex coalescence and tensile strength reached in 2 h[1]
- Water resistance
- Waterproof, UV-resistant, and machine washable once cured[1]
- Cured color
- Dries off-white to translucent flexible rubber[1]
How long it takes
Working time, clamp time, and full cure are different things — this is the order you experience them in.
- Initial set3 min
- Fixture time15 min
- Full cure2 h
Sources
Where these facts come from
- [1]Tear Mender Instant Fabric & Leather Adhesive Technical Data Sheet — Bish's Tear Mender · Technical data sheet · Retrieved 2026-08-14
