Gorilla Waterproofing Tape, Permanent, Clear (4" x 8')

Product overview

What Gorilla's Waterproofing Tape Actually Is

This is a 4-inch by 8-foot roll of clear, extra-thick adhesive repair tape from Gorilla, positioned as a patch-and-seal product rather than a finishing trim like the caulk-strip products elsewhere in this guide. Gorilla's own product page describes it as forming an instant, permanent watertight bond on contact, usable even underwater, and rated for hot, cold, wet and dry application conditions.

Unlike the smaller caulk-tape brands here, Gorilla is a widely distributed, well-known brand also sold at Home Depot, Ace Hardware, Target and True Value under the same 'Waterproof Patch & Seal Tape' name, which means there's a real body of independent retailer reviews to check beyond Amazon — a meaningfully stronger evidence base than most products in this space.

Gorilla markets the tape as bonding to a wide range of surfaces including metal, plastic, wood, rubber, vinyl, glass, acrylic and steel, and as UV-resistant for outdoor use. It's intended for patching holes, cracks, gaps and tears — think a leaking gutter, a cracked hose, a tarp tear or a boat hull seam — rather than as a decorative bathroom-caulk replacement, which puts it in a different practical use-case than the four caulk-strip products in this guide even though the category tag is similar.

Independent buyer reviews on Home Depot's site and elsewhere are generally positive: reviewers describe it as genuinely waterproof with very strong, 'super sticky' adhesion, with one comparing it favorably to duct tape for heavy-duty repairs. The most consistent complaint isn't about waterproofing failure but about handling — reviewers note the adhesive is so aggressive that repositioning after initial contact is difficult, so accurate placement on the first try matters.

We did not find a formal third-party lab test (e.g., ASTM peel-strength or accelerated-weathering data) published for this specific tape, so the durability claims beyond the retailer reviews are still primarily Gorilla's own marketing language. That said, the combination of a well-known brand, multi-retailer distribution, and a real cluster of independent buyer feedback makes this one of the better-evidenced products in this comparison.

What Owners Report

Recurring themes synthesized from the linked owner-review sources. These are reported experiences, not TopFiveFind test results.

Key Listed Features