ROCK LOCK | Rock, Gravel, Stone & Mulch Glue

ROCK LOCK is a super-concentrated, water-permeable landscape adhesive that locks rock, gravel, stone, and mulch firmly in place — preventing erosion and displacement through rain, wind, UV, and seasonal temperature changes. One gallon makes two gallons of ready-to-spray formula.

• One gallon covers up to 128 sq ft of bed space
• Locks in rock, gravel, stone, and mulch for lasting stability and erosion control
• Super concentrate — mix 1:1 with water for twice the volume
• Clear hold — dries invisible so your landscape looks natural, not coated
• Water-permeable formula preserves proper drainage and root health
• Easy DIY mix-and-spray application — no special tools needed
• Made in the USA by Yard Mastery

Product Description

Stop fighting your landscape every season. Every time it rains, mulch washes to the edges. Gravel migrates onto the lawn. ROCK LOCK ends that cycle. This super-concentrated adhesive bonds individual particles of rock, gravel, stone, or mulch together at the contact points, forming a durable hold that stays put — while remaining fully water-permeable so your soil drainage is never compromised.

Size Options and Coverage

• Quart (32 oz) — makes 64 oz of ready-to-spray solution, covers up to 32 sq ft
• 1 Gallon (128 oz) — makes 256 oz of ready-to-spray solution, covers up to 128 sq ft
• 2 Gallon Pack (256 oz) — covers up to 256 sq ft
• 4 Gallon Pack (512 oz) — covers up to 512 sq ft
• 5 Gallon Pack (640 oz) — covers up to 640 sq ft

Application Instructions

1. Tamp: Before mixing, use a tamper to firmly compact your rocks or mulch. More contact points between materials means a stronger bond.
2. Mix: In a pump sprayer, combine equal parts ROCK LOCK and water (1:1 ratio). Shake well and pressurize.
3. Spray: Apply mixture evenly over dry rock or mulch surfaces.
4. Tamp Again: Wait 10 minutes, then tamp the area once more to increase stability and contact points.
5. Apply Remaining Solution: Spray any leftover solution over the area for full coverage.
6. Clean Up: Rinse your sprayer thoroughly after each use. Do not leave unused product in the sprayer.

TAMP → MIX → SPRAY → TAMP → SPRAY → DONE!

Mixed Product Coverage

32 oz (quart) of ROCK LOCK + 32 oz water = 64 oz ready to spray. Covers 32 sq ft of bed space.
128 oz (1 gallon) of ROCK LOCK + 128 oz of water = 256 oz (2 gallons) ready to spray. Covers 128 sq ft of bed space.

Works On

• Mulch
• Stone
• Gravel
• Rock

Label / Specs / SDS: Rock Lock Info
Package Includes: One, Two, or Four Single Gallon(s), or 5-Gallon (two 2.5-gallon bottles) based on selection.
Storage: Protect from freezing. Do not store in open, unlabeled, or mislabeled containers. Do not leave unused product in the sprayer.

Shipping Information