Best Faux Rock Recipe

Waterproof & Super Tough Hypertufa Faux Rocks

If you want to make super tough artificial rocks use this no-fail faux rock recipe

Faux Rock / Hypertufa Rock

This hypertufa recipe is an excellent choice for any garden art object you wish to fabricate that will come into contact with constant ground water/moisture; if you live in climates where you experience freezes and thaws; or where you will be walking upon the rocks (stepping stones).

My Recommended Hypertufa Faux Rock Recipe

1 part portland cement
1 part builders sand
2 parts peat moss
Acrylic fortifying additive
Optional: Concrete dye colorants
Enough water to make a mud-pie consistency

The acrylic fortifying additive is a “must do” as it helps make the rocks stronger. This product should be readily available wherever you are purchasing your Portland cement. (Quikrete’s brand is called “Concrete Acrylic Fortifier” and comes in 1 quart and 1 gallon bottles.)

If you are planning on using your faux rocks around a pond’s edge, MAKE SURE you carefully follow this information: How to Properly Cure Hypertufa. You DO NOT want any leaching of lime into your pond’s water. Lime is very detrimental to plants and fish!

Make sure you’ve read this information on how to properly mix hypertufa ingredients. As with any ‘tufa project, a successful outcome when mixing up this faux rock recipe is dependent upon the proper ratio of ingredients: Hypertufa Mixing Guidelines: Tips to Help You Avoid Unnecessary Mistakes

And finally, just one more article you’ll need to read. Familiarize yourself with the entire rock-making process: Faux Rock: Guidelines for Successful Projects


  1. How much acrylic fortifying additive should be used? Or should one just follow the bottles directions?

  2. Claudia Brownlie says:

    Sean: Using the Search feature on my website, you can find a number of articles I’ve written discussing fortifiers and bonding agents. Please check them out and you’ll surely find the answers you need. Best of luck with all your ‘tufa projects! 🙂

  3. Michael Jinks says:

    I;m new so bear with me also I r an engineer so be warned! When you say equal parts in a recipe do you mean weight, volume or what? I know picky but there are those amongst you that are pretty anal about such things and are easily corn-fused!

  4. Claudia Brownlie says:

    Hi Michael: No problem – your questions are valid. I “assume” most people would use a measuring cup, coffee can, or other similar item to measure out the individual ingredients; thus, a “part” would mean the amount you filled the container with for the other ingredients. I learned, and so then teach, that all measurements are by volume, and not weight. Think of it … by weight peat moss (due to its composition) would end up being more than an “equal part” of Portland cement if you were weighing out the amounts.

  5. I see in your recommended recipe for hypertufa rocks, you omit the perlite. What is the purpose for this?

  6. Claudia Brownlie says:

    Hi Linda: Well, think about how real rocks look … they normally don’t have lots and lots of white specks in them. Thus the reason for the recipe I recommended. I wanted to share a very realistic recipe for that particular project.

  7. E Bowns says:

    How does this compare in weight to a regular rock?

  8. Claudia Brownlie says:

    Hello: This question is rather difficult to answer because there are variables that would need to be considered, such as: what is the weight of the real rock; what recipe are you using (what ingredients have been chosen); how large of a rock are you wanting to make – will an inner form also have to be used; etc.


  1. […] Here’s a typical recipie […]

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