How to Use Rains Fastening Tape for Rainproofing
By Rains® | Explore Waterproof Jackets, Bags & Outerwear | Published: 2026-10-25
Category: How-to Guides
Learn how to apply Rains Fastening Tape to seal seams and secure gear against moisture. Step-by-step guide for outdoor and everyday use.
Quick Answer
Use Rains Fastening Tape to seal seams, secure loose straps, or bundle cables on your rain gear. Cut to length, press firmly, and avoid stretching the tape for a lasting hold.
Why Use Fastening Tape Instead of Sewing or Glue
Sewing can create new holes that let moisture in, and glue may not hold on slick waterproof fabrics. Rains Fastening Tape is a no-tools solution that sticks to itself and most smooth surfaces, so you can patch a torn seam or tidy up a loose strap without weakening the waterproof layer.
Because the tape is pre-divided into sections, you don't need scissors or a ruler to get a clean cut. That makes it especially handy for field repairs or quick adjustments on a rainy commute.
When Not to Rely on Fastening Tape Alone
Fastening tape is great for temporary fixes and non-structural bundling, but it won't replace a proper seam sealant on high-pressure areas like backpack shoulder straps or tent seams. For permanent repairs on heavily stressed seams, consider a dedicated seam sealer or a professional patch.
Also avoid using the tape on dirty or wet surfaces—it needs a clean, dry base to stick. If the area is greasy or heavily abraded, the bond may fail within hours.
How to Apply Rains Fastening Tape for Rainproofing
- Clean and dry the surface: Wipe the area with a dry cloth to remove dirt, moisture, or grease. The tape needs a clean, dry base to bond properly. A common mistake is applying tape to a damp surface—moisture will prevent adhesion and cause the tape to peel off.
- Tear or cut the tape to length: Use the pre-divided sections to tear off a piece slightly longer than the area you need to cover. For a seam, cut a piece that extends 1–2 cm beyond each end. Avoid stretching the tape as you tear it—stretching can create wrinkles that lift and let water seep underneath.
- Press firmly along the entire length: Place the tape over the seam or cable bundle and press down with your fingers, working from the center outward. Apply even pressure for about 10 seconds. If you press only the edges, the center may lift. Use a flat object like a credit card to smooth it out if needed.
- Check the bond before exposing to rain: Gently tug the tape after 5 minutes. If it lifts, clean the area again and reapply with more pressure. Test by spraying a little water on the taped area. A quick tug test saves you from discovering a leak mid-commute. Reapply if the tape feels loose.
Product Details
- Rains Fastening Tape: Velcro fastening tape in black and white. Pre-divided into sections—ideal for keeping cables and other essentials together. You can tear off exactly the length you need without cutting, which speeds up on-the-go repairs and keeps your desk or bag tidy.
Rains Fastening Tape
