HomeBlogBlogIs 100% Ripstop Nylon Waterproof? What You Need to Know

Is 100% Ripstop Nylon Waterproof? What You Need to Know

Is 100% ripstop nylon waterproof?

Not by itself. “100% ripstop nylon” tells you the fabric is nylon with a reinforcing grid weave that helps resist tears, but it doesn’t guarantee waterproof performance. Untreated nylon fibers can absorb a small amount of moisture and, more importantly, the weave still has microscopic gaps where water can push through under pressure.

What usually makes ripstop nylon act “waterproof” is an added barrier: a polyurethane (PU) coating, silicone (silnylon) treatment, a TPU laminate, or a membrane construction. Without one of those, ripstop nylon is typically water-resistant at best—fine for light splashes or brief drizzle, but not dependable for sustained rain or pressure (like sitting on wet ground).

What to look for if you need true waterproofing

If you’re shopping for a jacket, tent fly, pack, or cover and you want real rain protection, check the product details for:

Coatings/laminates: PU-coated, silicone-coated, TPU-laminated, or membrane-backed ripstop nylon.
Waterproof rating: A hydrostatic head value (often listed in mm). Higher numbers generally mean better resistance to water pressure.
Seam construction: Taped or welded seams matter, because water often enters through stitching even when the fabric is waterproof.
DWR finish: Durable water repellent helps water bead on the surface, but it’s not the same as waterproofing and can wear off.

So when is 100% ripstop nylon “good enough”?

For windbreakers, gear liners, stuff sacks, and everyday abrasion resistance, plain ripstop nylon can be a solid choice. For prolonged wet conditions, it’s smarter to choose ripstop nylon that’s specifically described as waterproof (and backed by seam sealing and a coating or laminate).

For a deeper breakdown of coatings, ratings, and how ripstop nylon performs in the rain, see the full guide here: https://coolpicksmart.shop/is-ripstop-nylon-waterproof/.

FAQ

What is the difference between water-resistant and waterproof fabric?

Water-resistant fabric sheds light moisture but can leak under steady rain or pressure. Waterproof fabric has a defined barrier (coating, laminate, or membrane) designed to prevent water penetration.