6 Best Rear View Mirror Glue of 2026

The Ready Rearview Mirror Adhesive charges out of the gate with industrial-strength bonding power, engineered to conquer extreme temperatures and relentless weather cycles. With a 15-minute full cure time and a formulation built for metal-to-glass adhesion, this glue stands tall in harsh conditions—perfect for drivers in regions plagued by freezing winters or scorching summers. It directly tackles the common frustration of mirrors loosening after installation, offering a long-lasting, vibration-resistant hold that refuses to quit.

In real-world testing, the adhesive sets fast and holds firm, making it ideal for DIYers who want a quick, reliable reattachment without waiting hours. The included video guide and image-based instructions streamline the process, minimizing user error—even on curved windshields. While it performs admirably on clean glass and metal buttons, surface prep is non-negotiable; any residue or moisture can compromise the bond. It doesn’t forgive mistakes, but when applied correctly, it delivers OEM-level durability across seasons.

Compared to slower-curing alternatives, Ready’s speed and resilience position it as a top pick for year-round reliability, outperforming budget options in extreme climates. It doesn’t offer multi-surface versatility like Gorilla Epoxy, but it’s purpose-built for rearview mirrors—a specialist over a generalist. For those prioritizing all-season durability and rapid installation, this adhesive delivers uncompromising performance, easily rivaling pricier professional kits.

The Permatex 81840 isn’t just strong—it’s OEM-specified, engineered to meet the exact standards used in auto factories. Its two-part system—featuring a precision pipette of adhesive and a medical-grade activator towelette—delivers a professional-grade bond that resists vibration, heat, and moisture with clinical accuracy. This is the go-to for drivers who demand guaranteed results, especially after repeated mirror failures from weaker glues.

Real-world use confirms its precision: the .01 oz vial dispenses just enough adhesive to avoid messy overflow, while the activator towelette ensures rapid, even curing without drips. It shines in humid environments and holds firm under constant sunlight exposure, making it ideal for vehicles in coastal or desert regions. However, the small volume means no room for error—misapplication can leave you short on adhesive mid-job.

Against competitors, the 81840 outperforms in bond reliability and ease of clean application, surpassing budget picks like Permatex 81844. While it lacks the multi-surface flexibility of Gorilla Epoxy, it’s purpose-optimized for glass-to-metal mirror mounting, where precision matters most. For mechanics and detail-oriented users, this kit offers the most trustworthy, no-compromise solution, balancing professional specs with DIY accessibility.

The 3M 08749 adhesive enters the ring with a reputation forged in automotive labs, delivering a two-part acrylic system that cures fast and holds like iron. With 15-minute set time and resistance to heat, humidity, chemicals, and vibration, it’s engineered for environments where failure isn’t an option. This is the pick for users who need rapid, rock-solid bonding without sacrificing long-term stability.

In practical use, the adhesive proves consistent—even in muggy garages or sun-baked parking lots, it achieves secure handling strength quickly. It adheres flawlessly to glass and metal buttons, forming a bond that laughs off daily jolts from potholes or sudden stops. The simple two-step process minimizes errors, though users must avoid over-applying, as excess can seep out and mar the windshield. It doesn’t flow into gaps like epoxy, so surface contact must be tight.

Compared to LOCBONDSO and Ready, the 3M holds its own with superior environmental resistance, though it doesn’t cure quite as fast as advertised in cold conditions. It lacks the multi-material range of Gorilla Epoxy but excels in its narrow lane: mirror mounting. For those who value speed, reliability, and brand trust, this adhesive is a precision tool that outperforms in critical conditions.

The Permatex 81844 adhesive steps in as the budget-savvy survivor in a field of premium players, offering a no-frills fix for loose rearview mirrors without breaking the bank. It’s a basic two-part formula—adhesive and primer in tiny vials—that gets the job done when funds are tight. While it lacks the polish of its pricier sibling (81840), it still delivers a functional, weather-resistant bond for occasional users.

Testing reveals it works—if you follow instructions to the letter. The .3ml adhesive and .6ml primer require careful metering, and the lack of an applicator towelette means you’re more likely to see smudges or uneven spread. It holds well under normal conditions but shows noticeable stress in extreme heat cycles, making it less ideal for year-round reliability in harsh climates. It’s best for indoor garage repairs or short-term fixes.

Against the 3M or Ready options, the 81844 trades performance for cost, offering entry-level functionality rather than long-term assurance. It doesn’t match the durability of the best all-season picks, but for a one-time, low-risk repair, it’s a viable stopgap. If you’re after bare-minimum reliability at minimal cost, this is the adhesive that says “good enough” without overpromising.

The LOCBONDSO adhesive kit storms the scene with professional-grade authority, boasting a fast-curing, waterproof bond that locks metal to glass with unshakable confidence. Its activator-enhanced formula achieves handling strength in seconds and full mirror-mounting strength in just 30 minutes—ideal for drivers who can’t wait hours for a cure. The permanent, pressure-resistant bond laughs off rain, snow, and car washes, making it a standout for wet or high-pressure environments.

In real-world trials, the adhesive proves its mettle: it resists water immersion and thermal swings without delamination, and the multi-surface versatility allows use beyond just mirrors—think badges or trim. However, the critical note to apply glue to only one surface is easy to miss, and doing both can cause failure. It’s not the fastest (Ready and 3M cure quicker), but its long-term waterproofing is unmatched.

Stacked against Permatex 81840, LOCBONDSO offers broader environmental protection and faster handling strength, though it lacks OEM branding. Compared to Gorilla Epoxy, it’s more specialized but more durable for glass-to-metal. For users in rainy climates or near coasts, this glue delivers the most resilient, water-defying bond in the lineup—a fortress against the elements.

The Gorilla 2 Part Epoxy doesn’t just glue—it dominates, flexing its 5-minute set time and gap-filling toughness far beyond typical mirror adhesives. While not designed exclusively for rearview mirrors, its clear, water-resistant epoxy bonds metal, glass, plastic, and more, making it the ultimate multi-surface warrior in your toolkit. Whether you’re reattaching a mirror button or fixing a cracked trim piece, this syringe delivers industrial versatility in a single squeeze.

In action, the even-dispensing syringe keeps resin and hardener balanced, and the gap-filling property saves jobs where surfaces don’t meet perfectly—something most mirror glues can’t handle. It holds firm under vibration and moderate moisture, though prolonged submersion isn’t advised. The clear finish is a bonus for invisible repairs, but it’s overkill for simple mirror jobs—you’re paying for flexibility, not specialization.

Against dedicated mirror adhesives like 3M or Permatex 81840, Gorilla trades precision for adaptability. It’s slower to fully cure than advertised in cold weather and lacks activator speed. But for users who need one adhesive for multiple car repairs, it’s unbeatable in range and toughness, easily justifying its place as the most versatile performer—even if it’s not the fastest mirror specialist.