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🪨 Lock your landscape in place—because your outdoor space deserves the best!
Petra Max Rock Glue is a powerful, pet-safe landscape adhesive that stabilizes gravel, pebbles, mulch, and decomposed granite over 200 sq ft. Its fast-drying, water-resistant formula features a blue tint for precise application and cures fully in 12 hours. Made in the USA, this non-toxic glue ensures long-lasting erosion resistance while allowing water permeability, perfect for professional and home landscaping projects.








| Asin | B0CQKPGSDH |
| Best Sellers Rank | #1,697 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #1 in Water-Based Adhesives |
| Brand Name | Petra |
| Color | White |
| Compatible Material | Rocks |
| Container Type | Bottle |
| Customer Reviews | 3.9 3.9 out of 5 stars (2,577) 3.9 out of 5 stars |
| Full Cure Time | 12 hours |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Weight | 9.5 pounds |
| Manufacturer | Petra |
| Material Type | Lockscape Glue |
| Model | PM-2041 |
| Number Of Pieces | 1 |
| Other Special Features Of The Product | Concentrate, Fast Drying, Non Toxic, Safe for Pets, Strong |
| Part Number | PM-2041 |
| Specific Uses For Product | Landscaping |
| Unit Count | 128 Fluid Ounces |
| Upc | 810148641443 |
| Viscosity Level | Medium |
| Volume | 1 gallons |
| Water Resistance Level | Water Resistant |
User
Good stuff
We have a lot of areas with 1/4-1/2 inch gravel stone that our dog loves to dig up. She does not do that anymore. It takes several coats, but this stuff works very well. As an added bonus, I like that it dries in such a way that it leaves the stones with a shiny wet look.It seems to take about a half day to dry one coat. Maybe faster if it’s hot or you have full sun.Go in knowing that this is not going to work with a single coat. I think I used 4-5 coats. It’s quite difficult to pry the stones up now.When it rains, the glue does liquify again. I would imagine in time it will degrade, but we’ll see.
User
Great for gravel areas!
A big bucket of Elmers glue! Water it down 1:1 into a sprayer and you can glue your gravel in place. Also makes the gravel look more colorful (like when you get rocks wet, their color is more pronounced). Challenging to get all the glue out of the sprayer when you’re done, but it’s worth it. No more gravel kicked up on the sidewalk!
User
$$$ for not working well
I followed the directions exactly when using Rockscape Rock Glue Max. I made sure the rocks were clean and dry, applied it as directed, and let everything cure well over the recommended timeframe. At first, it seemed to work pretty well. The pebbles were definitely staying in place much better than before, although I will say they never hardened together quite as strongly as I expected for such small rocks.For about the first week everything looked fine, even through hot temperatures. However, after we got one really heavy rain, it almost seemed like the glue partially dissolved or shifted. That surprised me because the product states it only takes a few days to fully dry/cure, and mine had already been sitting for over a week.Now, every time it rains, I can visibly see a white film or residue appear over the rocks and glue areas. Once everything dries again it looks mostly normal, but the pea pebbles are starting to loosen, shift, and wash out of place again. Unfortunately, I’m going to have to redo the entire area.I don’t have large landscaping stones I specifically used very small pea-sized pebbles so maybe this product performs better with larger rock. Based on my experience, though, it just did not hold up the way I expected it to, especially after rain exposure. I really wanted to love it because the reviews seemed overall positive, but for my project it unfortunately did not last.
User
A Need for patio stones
Have to use quite a bit to get the tricks to stay in place. A little expensive but needed.
User
It does work, just need to ask the right questions and apply it properly.
I just redid my side yard and had gravel put in around the walkway. The loose rocks drove me crazy so I purchased gravel glue - two 32 ounce bottles, along with the applicator. The first time, I screwed up the mix ratio and watered it down. The second bottle, followed the directions on the back and applied it correctly (I think) using their applicator, which I love!I Waited for it to cure and it held and it held well. I was happy. Then we were inundated with rain that lasted for three days. The glue held really well in the large sections of gravel, but not other sections - particularly between the pavers. It was as if I didn’t apply the glue at all. I didn’t understand what I did wrong as I had applied it evenly throughout. I knew that the application needed to be fixed/adjusted, and likely due drainage and moisture.I messaged the company with my questions. After sending them pictures, explaining the water to glue ratio I used, they recommended that, due to the heavy rain we’ve been getting, I try a 1:1 ratio, and apply 2-3 coats. I am going to do that when we are not expecting rain for a day or two. It’ll work - not concerned. Again, it held up in other sections, just not all.As for the glue - here’s a picture following my second application. I do like that it has a color to it when you apply it, but dries clear. The gravel against the house - large sections believe it or not - are the sections that held and the glue is still intact. With the exception of the gutters, there’s no overhang that gives that section shelter - so not sure why there it held, and not everywhere else. Again, I suspect drainage or moisture that may have existed before I applied, but that’s a guess.I would just make sure the area is completely dry, no rain expected for a couple of days, and if you live in an area that is experiencing a lot of rain, thicken the glue and apply 3 coats. Of course, you can always reach out to the company with any questions, and ask for guidance before you start the process. They are responsive and extremely helpful. Also, get their applicator! It’s easy to use and makes the application easier allowing you to evenly distribute it throughout sections.But I do want to give a shoutout to the Petra! I appreciated their responsiveness and their willingness to walk me through the steps, and come up with an alternative solution. A company that is willing to do that, without issue, is a good company to stand behind and support. I will definitely be a repeat customer.
User
Not worth the money
Very expensive, and doesn't hold for long. Maybe 3months, also takes alot to make it hold. I wont buy again
User
Not animal proof, but otherwise good
Works great, easy to apply with pressurized weed sprayer. I made the error of using a dirty tamp, so some of the dirt stuck on after it dried up. However, this is not skunk or racoon proof... skunk and/or racoon was still able to dig up a section only after having it applied for a few days. Don't think that's a knock on the product but just a strong racoon/skunks
User
Great product to keep your gravel walkway intact
This helps preserve my small landscape rocks and allows me to use my backpack blower without blowing the rocks into the grass or off the walking paths. It's very easy to clean out of my sprayer too. So far I have not had it clog my electric sprayer but I do rinse it out after every use. I usually respray every 3 months or so.
User
Unusable
Whole bottle was clumpy and unusableWaste of money
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