Learn How to Use Concrete Molds, and Paint Concrete Statues
On this page, you’ll discover step-by-step instructions for using concrete molds to create stunning garden décor and statues. We’ll cover how to pour concrete into molds, how to mix, recipes for concrete, and painting tips for concrete statues. You’ll also learn how to apply concrete acid stain to achieve rich, long-lasting color on your finished pieces.
How to mix concrete.
Always measure everything, as you can not improve your mix if you can not remember how much you used in the last mix. The most common mix for making your own concrete is probably the one two three mix. Which means just what it says, one part Portland cement, two parts sand and up to three parts small gravel. If you are pouring smaller statues you will use less and or smaller pea gravel. Sand should be a man made,Sharp or a River Sand the River Sand will have some small gravel in it. Almost any sand will work, but you do not want to use a play sand as it has been polished. Gravel should be Pea sized or smaller. This is just a basic mix to get you started. You can also use the 1-3-3 mix which is about a 3000 psi mix you would get from a concrete plant, as you start to make more statues you will find the mix that works for you. You will want your mix to have just enough water to make it pourable but not runny, as too much water will make concrete weak, but too dry of a mix and your statues will have lots of air holes in them. Casting statues is like anything else,the more you do it the better you will get at doing it. There are also water reducers that you can use to help improve your mix and to make your mix more fluid and also improve the strength of your concrete. You can find a short video of this in the info section under plasticizer. As I said before, this is just a starting point, should you need more help or have questions please feel free to email me or call me. If you are using pre-mixed concrete, then you will just be adding water. So for this mix you just need something to mix it in and add water, following the same rules as above try not to get too much water. You want the mix to be about like oatmeal consistency. I hope to add a few videos this spring about mixing and pouring molds, so keep checking back for more info. Information was from a concrete batch plant. 1-3-3 = 3000 psi concrete 1-2-2 = 4500 psi concrete
Painting Concrete Statues
Painting concrete statues is a simple way to add beauty, highlight details, and protect your piece for years to come. How to Choose the Right Colors for Your Concrete Statue When it comes to picking paint colors for your concrete statue, let your creativity take the lead—there’s really no wrong choice. You can go for natural, earthy tones if you want your statue to blend seamlessly into the garden, or select bold, vibrant shades to make it a true focal point. Here are a few ideas to get you started:
Animal statues: Stick with realistic colors or add a playful twist with unexpected hues. Stone or garden forms: Grays, browns, and subtle greens give a classic, weathered look. Accent pieces: Bright colors create fun pops that draw the eye and inject personality.
If you’re feeling stuck, draw inspiration from your surroundings—check out the plants in your yard, the bark on nearby trees, or even the colors used by neighbors. A stroll through local parks or a quick online search (Pinterest is packed with examples) can be great for sparking ideas. Don’t be afraid to mix and match. Sometimes, layering different shades or adding highlights with a lighter or darker version of your base color can help details stand out and give your piece extra depth. And remember, it’s all about making something you’ll enjoy looking at for years to come. The best results come from using a high-quality latex paint like Smith brand paints has been used for decades. For the first coat, thin the paint until it’s almost a pastel shade—this allows the concrete to absorb it and creates a natural primer coat that bonds well to the surface. After that, you can apply your next coats of concrete statue paint at full strength for rich, even coverage.Make sure to wash the stone to remove any mold release left behind.
Cleaning Debris and Dirt from Concrete Statues
Before you dive into painting, it’s important to start with a clean surface. For most garden statues, a gentle cleaning is all you need. Use a soft-bristled brush—an old paintbrush or a natural fiber brush works well—to sweep away cobwebs, loose dirt, and debris. Avoid using a stiff-bristled brush or wire brush, as these can scratch or gouge the surface of your statue, especially if there are fine details you’d like to preserve. If your statue isn’t heavily soiled, dry brushing is often enough to tidy things up. This method is fast, requires no water, and helps keep delicate features intact. For statues that have stubborn dirt stuck in crevices, you can lightly dampen the brush or use a cloth, just be sure to let the piece dry thoroughly before applying any paint or stain. This extra step ensures your paint will adhere properly and last for years to come.
How Long to Let Your Painted Statue Dry
After you’ve applied your last coat of paint, it’s important to let your concrete statue dry thoroughly before moving on to sealing or displaying it. Generally, painted concrete statues should be left to dry for at least 24 hours in a warm, dry area. If possible, choose a sunny day so the paint cures evenly—nothing beats a bit of natural warmth to help things set! If the weather isn’t cooperating (think rain, cold snaps, or heavy dew), bring your statue indoors to a well-ventilated and warm space, like a garage or laundry room. Keep moisture and chill at bay, as these can interfere with the drying process and your paint job’s durability. Patience here pays off—allowing proper drying ensures your hard work lasts for seasons to come.
To keep your statue in top condition, finish by applying a concrete sealer. Resealing every couple of years helps protect against weathering and fading. (Brands like Direct Colors offer reliable sealers and acid stains for added durability and color options.)
For a quick and attractive finish, try the dry brushing technique: start with a solid black base coat, let it dry completely, then lightly brush a highlight color across the raised areas. This method enhances fine details and gives your statue a professional, aged look with minimal effort.
Whether you’re painting garden statues, projects made from stepping stone molds, or decorative pieces created with concrete molds, these same painting and sealing methods will keep your work looking vibrant and long-lasting.
How to Care for Concrete Statues in Cold or Rainy Weather
Concrete statues may look tough, but they still need a little help during harsh weather. Since concrete is porous by nature, moisture can seep in—especially through tiny, hairline cracks or around painted areas. When temperatures dip below freezing, that trapped water can freeze and expand, leading to cracks or peeling paint over time. To keep your statues looking great for years, it’s best to move them to a sheltered spot when rainy or freezing weather is in the forecast. A garage, basement, garden shed, or even a laundry room works well for storage. Keeping your piece dry not only helps prevent moisture damage, but also preserves the finish and reduces the risk of peeling or flaking paint. If moving larger statues isn’t practical, make sure they’re positioned on well-drained ground and cover them with a breathable tarp during wet spells. Avoid wrapping tightly in plastic, as this can trap moisture inside, doing more harm than good. Regular inspections after storms or cold snaps are also a good habit—wipe off excess water and check for any early signs of damage, so you can act quickly to keep your artwork in top shape.
Testing Readiness- Curing Process
Before demolding, test the concrete's hardness by pressing firmly with a coin or thumbnail. If you can leave a visible mark, the concrete needs additional curing time. Tips for Success
Following these steps will help you achieve professional-quality concrete castings with clean details and proper structural integrity.
Demolding and Finishing
Thanks to proper release agent application, separating the stone from the mold should be trouble-free. Gently flex the mold at the edges to coax finished stones free. Excessive force should never be required with proper preparation, molds should never be filled all the way to the top.
Inspect unmolded stones for rough spots or excess material at edges. Touch up with a damp sponge or sandpaper while concrete remains workable for a professionally finished look. Apply appropriate sealers for extra longevity and color enhancement, noting that residual release agent may affect sealer adhesion.Coloring and Decorative Finishing Products
With your stone freshly demolded, it's time to consider how you want to add color or artistic flair. There are several reliable options for finishing and coloring concrete:
Iron Oxide Pigments: These powder or liquid additives are mixed directly into wet concrete, offering rich, UV-stable colors that won't fade or flake away. Brands like Solomon Colors and Davis Colors are popular choices for vibrant, consistent hues.
Concrete Paints and Stains: If you prefer to color your stones after they’ve cured, look to specially formulated concrete paints or penetrating stains. These allow you to achieve everything from natural earth tones to bold, modern looks. Water-based and acid-based stains can highlight concrete’s textured details or create luminous variegated effects.
Accent and Specialty Products: Consider using tinted sealers, antiquing washes, or even metallic highlights for a custom appearance. These finishing touches not only personalize your stones, but can also add protective qualities and enhance color depth.
Experimenting with colorants and finishes is a fun way to create one-of-a-kind garden features. Just remember to always test new products on a sample stone, and follow manufacturer guidelines for best results.
Mold Care and Maintenance Proper storage extends mold life significantly. After each use, clean away concrete residue, check for wear, and store molds flat or upright in cool, dry areas. ABS molds will last for years with simple water and mild soap cleaning, avoiding harsh chemicals.
Some commercial molds offer convenient stacking or hanging features, maximizing storage space and preventing unnecessary wear. This maintenance, combined with consistent release agent use, makes DIY stone making sustainably cost-effective long-term.Versatility Beyond Stepping Stones
These concrete molds aren’t limited to just garden paths. Crafty types often repurpose them for hypertufa projects—a lightweight, stone-like material perfect for planters, troughs, and even decorative faux rockery. By adjusting your mix to include peat moss and perlite (think of it as a recipe twist borrowed from British gardening tradition), you can create rustic, weathered effects with the same reliable molds.
Additionally, these molds can double as a canvas for wall plaques or sculptural art. Simply pour a thinner concrete or plaster mix, then embellish with glass beads, mosaic tiles, or paint for unique, one-of-a-kind decorative pieces. This flexibility means your mold collection becomes a toolkit for all sorts of creative, personalized garden features and décor.
Design Possibilities and Creative Applications Today's stepping stone molds serve everyone from minimalists to those who favor intricate European tile patterns or nature-inspired designs. For uniform paths, choose molds that align or interlock perfectly. For organic, storybook looks, Angels explore assorted irregular shapes for more natural appeal.
The versatility of quality molds encourages experimentation with textures, colors, and finishes. Whether creating classic cobblestone paths, modern geometric patterns, or fish and animal shapes, your mold selection fuels creative expression while ensuring durability. Exploring More Garden Art Ideas
Stepping stones are just the beginning—if your creativity is calling for more, there’s a whole world of garden art waiting. Many mold makers also offer designs for plaques, whimsical planter feet, and decorative accents to complement your landscape. Fancy a mosaic path that rivals those found in Barcelona’s Parc Güell or inspired by pebble mosaic traditions from Turkey? You’ll find molds and supplies for those projects, too.
For bird lovers, try casting leaf-shaped birdbaths using large hosta or rhubarb leaves as natural templates—simply apply concrete over an oiled leaf for intricate veining and organic shape. If you prefer a sculpted style, choose molds specifically shaped for shallow baths or whimsical water features.
Want to capture memories? Handprint stones and pet memorials are popular, easy projects—just remember to use safe, non-toxic pigments if children are involved, like the vibrant iron oxides used in art concrete projects. For the artistically inclined, creating wall plaques or hypertufa planters offers a rewarding way to personalize patios and entryways. Hypertufa, a lightweight mix of concrete, peat, and perlite, makes containers that mimic ancient stone—perfect for succulents or ferns.
Concrete Mix Recipes for Different Projects
Basic Mix Ratios (By Volume)
Standard General Purpose Mix
Ratio: 1 part cement : 2 parts sand : 3 parts gravel
Use for: Basic stepping stones, general construction
Strength: 2,500-3,000 PSI
Water: Add gradually until workable consistency
High Strength Mix
Ratio: 1 part cement : 1.5 parts sand : 2.5 parts gravel
Use for: Benches, heavy-duty applications
Strength: 4,000-5,000 PSI
Water: Use minimal water for maximum strength
Stepping Stone Recipes
Basic Stepping Stone Mix
Materials:
1 part Portland cement
2 parts fine sand
3 parts pea gravel or small aggregate
Water as needed
Instructions:
Mix dry ingredients thoroughly
Slowly add water until the concrete is workable
Consistency should hold shape when squeezed but not be soupy
Decorative Stepping Stone Mix
Materials:
2 quarts Portland cement (white or grey)
4 quarts sand (white or grey)
3 quarts aggregate (rock, pumice, etc.)
1.5-1.75 quarts water
Instructions:
Mix the dry ingredients well
Continue to add water until the mixture resembles a thick pancake batter
Fine Detail Stepping Stone Mix
Materials:
1 part Portland cement
3 parts fine sand (no gravel)
Polymer modifier (optional for flexibility)
Water
Best for: Intricate molds with fine details
Bench and Heavy-Duty Recipes
Concrete Bench Mix
Ratio: 1 part cement : 1.5 parts sand : 2 parts gravel
Strength: 4,000+ PSI
Reinforcement: Always use rebar or wire mesh
Curing: Minimum 7 days before use
Load-Bearing Structure Mix
Materials per cubic foot:
15 lbs Portland cement
30 lbs sand
45 lbs coarse aggregate
6-8 lbs water
Add: Fiber reinforcement for crack resistance
Fountain and Water Feature Recipes
Fountain Basin Mix
Ratio: 1 part cement : 2 parts sand : 2 parts fine gravel
Special additions: Waterproofing admixture
Thickness: Minimum 2 inches for water retention
Curing: Keep moist for 28 days for maximum strength
Decorative Fountain Mix
Materials:
4-5 bags (80 lb or 60 lb) of concrete mix
Concrete colorant if desired
Waterproof sealer for finishing
Best for: 3,500-4,000 psi acceptable for decorative uses
Specialty Decorative Mixes
Countertop-Quality Mix
Materials:
Portland Cement, sand/gravel mixture
2 quarts clean water
2 tablespoons superplasticizer
2 lbs acrylic polymer (optional)
Instructions:
Combine sand/gravel in mixer and let mix a few minutes
Add in Portland Cement
In clean 5-gallon bucket, add water and superplasticizer
Combine mix water with concrete, and begin mixing
Smooth Finish Mix
Ratio: 1 part cement : 2.5 parts fine sand : 0.5 parts fine aggregate
Use for: Smooth-surfaced decorative items
Add: Plasticizer for workability
Finish: Trowel smooth while plastic
Pre-Mixed Options
Quikrete Stepping Stone Mix
Coverage: 30 lbs makes 2 average stepping stones
Working time: 20-30 minutes
Demold time: 24 hours in warm weather
Rapid Set Concrete
Working time: 15-20 minutes
Demold time: 1 hour
Strength: 4,000 PSI in 28 days
Use for: Quick projects, cold weather
Mixing Tips and Ratios
Water-to-Cement Ratios
High strength: 0.4-0.5 water to cement ratio
Standard mix: 0.5-0.6 water to cement ratio
Workable mix: 0.6-0.7 water to cement ratio
Admixtures to Consider
Plasticizer: Improves workability without adding water
Accelerator: Speeds setting time
Retarder: Slows setting for complex pours
Fiber reinforcement: Reduces cracking
Air entraining agent: Improves freeze-thaw resistance
Measuring and Mixing Guidelines
By Volume Measurements
1 part = any consistent measure (bucket, shovel, etc.)
Always use the same measuring container
Level measurements for consistency
By Weight (More Accurate)
Portland cement: 94 lbs per bag
Sand: ~100 lbs per cubic foot
Gravel: ~105 lbs per cubic foot
Water: 8.33 lbs per gallon
Batch Size Guidelines
Small batch: 1 bag cement + proportional sand/gravel
Medium batch: 2-3 bags for multiple pieces
Large batch: Use concrete mixer for 4+ bags
Troubleshooting Mix Issues
Too Dry/Crumbly
Add small amounts of water gradually
Check if aggregates are too dry
Too Wet/Soupy
Add cement and sand in proper ratio
Reduce water next batch
Poor Strength
Reduce water-to-cement ratio
Ensure proper curing conditions
Check aggregate quality
Difficult to Work
Add plasticizer
Adjust sand-to-gravel ratio
Check mixing time
Safety and Storage
Mixing Safety
Always wear eye protection and dust masks
Use gloves when handling wet concrete
Work in well-ventilated areas
Material Storage
Store cement in dry conditions
Cover aggregates to prevent contamination
Use materials within recommended timeframes
Remember: The key to success is consistent measurements, proper water content, and adequate curing time. Start with small test batches to perfect your technique before larger projects.
Frequently Asked Questions About Concrete Molds
General Concrete Mold Questions
What types of concrete molds are available?
Our concrete molds include stepping stone molds, bench molds (tops and legs), garden decoration molds, plaque molds, birdbath molds, fountain molds, and specialty memorial molds. All are designed for repeated professional use.
What materials are concrete molds made from?
Most professional concrete molds are made from durable ABS plastic, fiberglass, or latex rubber. ABS plastic molds are the most popular due to their durability, ease of cleaning, and ability to capture fine details. They can typically produce 100+ castings when properly maintained.
How long do concrete molds last?
High-quality ABS plastic molds can last for 100+ castings with proper care. The lifespan depends on the thickness of the mold (3/16" or thicker is recommended), how well you maintain them, and the type of concrete mix used.
What's the difference between ABS plastic and latex molds?
ABS plastic molds are lower cost and easier to use. Latex molds are more flexible and better for intricate details and statues but require special release agents (castor oil )
Concrete Mix and Pouring Questions
What type of concrete should I use?
For stepping stones and decorative items, use a standard concrete mix or rapid-set concrete. For structural items like benches, use a stronger mix. The typical ratio for good strength is 1 part Portland cement, 2 parts sand, and 3 parts gravel, but pre-mixed concrete is easier for beginners.
What PSI strength do I need?
- Decorative stepping stones: 2000-3000 PSI
- Heavy-duty stepping stones: 3000-4000 PSI
- Benches and load-bearing items: 4000-5000 PSI
Do I need to add reinforcement?
Yes, adding wire mesh or rebar is recommended for most projects, especially benches, large stepping stones, or memorial pieces. Wire or rebar provides safety in case the concrete cracks years later. Always coat reinforcement materials with rust-resistant paint before use.
What release agent should I use?
For plastic or fiberglass molds, cooking oil works great. For latex molds, you need to use castor oil. Apply a thin, even coat and wipe off excess to prevent puddles that could affect the surface finish.
Stepping Stone Specific Questions
How big should stepping stones be?
Most stepping stone molds produce stones 12” to 16" wide, which provides a comfortable stepping surface. Standard thicknesses range from 1.5" to 3.5" depending on the intended use and weight requirements.
How much does it cost to make stepping stones?
With an average materials cost of just a few dollars per stepping stone, making your own is very economical compared to buying some pre-made stones. Mainly your making stones that you can not buy locally.
What shapes work best for pathways?
Round and square shapes are most popular for straight pathways, while irregular natural shapes work well for curved or casual garden paths. Consider your installation method and overall landscape design when choosing shapes.
Can I make stepping stones over existing concrete?
This is possible but requires proper preparation. The existing concrete must be clean, structurally sound, and properly prepared with bonding agents. Consider the final height and drainage issues.
Bench Mold Questions
Do I need separate molds for bench tops and legs?
Yes, most concrete benches require separate molds for the top and legs/supports. This allows for easier demolding and better structural design. Some designs use a single curved top with separate leg molds.
How thick should concrete benches be?
Bench tops typically range from 2" to 4" thick. Thicker tops provide more durability and weight stability. Always include reinforcement in bench components.
Can I make a full bench in one piece?
While possible, it's not recommended due to demolding difficulties and weight issues. Separate components allow for easier handling, transport, and replacement if needed.
Mold Care and Maintenance
How do I clean concrete molds?
Clean molds with soapy water after each use to remove concrete residues. Use warm water and a soft brush, avoiding abrasive materials that can scratch the surface. For stubborn residue, special cement residue cleaners are available.
How should I store my molds?
Store molds in a dry, cool location away from direct sunlight. Stack carefully with padding between molds to prevent scratching. Ensure molds are completely clean and dry before storage.
What should I avoid when using molds?
- Don't use abrasive tools or metal scrapers
- Avoid leaving concrete in molds longer than necessary
- Don't use petroleum-based release agents on latex molds
- Don't expose molds to extreme temperatures
- Avoid using high-alkaline concrete additives that can damage plastic
Troubleshooting Common Issues
Why are my castings sticking to the mold?
Usually caused by insufficient or wrong type of release agent, or concrete that's too wet. Ensure proper release agent application and correct concrete consistency.
How do I prevent air bubbles?
Tap the sides of the mold gently during filling, use a slightly wetter mix, or vibrate the mold slightly to help air bubbles rise to the surface.
When can I remove castings from molds?
In warm weather (70°F+), remove after 24 hours. In cold weather, wait 2-3 days. Test by pressing firmly with a coin - if it leaves a mark, wait longer.
Why are my castings cracking?
Common causes include concrete drying too quickly, insufficient reinforcement, or removing from molds too early. Cover castings during curing and ensure proper curing time.
Can I speed up the curing process?
Rapid-set concrete can be demolded sooner, but regular concrete shouldn't be rushed. Proper curing develops strength - rushing can weaken the final product.
Design and Customization
Can I add color to my concrete?
Yes, use concrete colorants added during mixing. Integral colors provide consistent results throughout the piece. Surface stains can be applied after curing for varied effects.
How do I create texture on smooth surfaces?
Use texture stamps, brushes, or rollers on the surface before the concrete fully sets. Natural materials like leaves can create interesting patterns.
Can I embed decorative elements?
Yes, items like stones, glass pieces, or metal accents can be embedded. Place them after initial set but while concrete is still workable.
Professional Tips
What's the best concrete mix for detailed molds?
Use a sand mix or add extra fine aggregate for molds with intricate details. This helps capture fine textures and reduces the chance of voids.
Should I use additives?
Plasticizers can improve workability, while fiber additives can reduce cracking. Follow manufacturer recommendations and test on small pieces first.
How do I ensure consistent results?
Maintain consistent concrete mixing ratios, ambient temperature, and curing conditions. Keep detailed records of successful mixes and techniques.
When should I replace my molds?
Replace molds when they show significant wear, cracking, or loss of detail. Quality molds are an investment that pays off through multiple successful castings.
How to use Acid Stain for Concrete Statues.
Acid stain is quick and easy to use. First the statue must be clean and free of any oil from casting, then using a brush or a sprayer you can apply your acid stain to the concrete statue. Make sure when applying the acid stain not to use to much at one time as acid will streak the statue if any runs go down the side and no matter how many coats you add afterwards you cannot get rid of the streaking so by starting at the bottom and working your way to the top you will have a much better looking statue. Once you have applied the acid stain let it sit for at least six hours. Once the acid stain has dried you will need to wash the residue off with a soap and water and rinse thoroughly. Once the statue has air dried you can now apply sealer. You must use a sealer over the acid stain, as the sealer is what brings out the true colors of the acid stain. When applying the acid stain and sealer you should wear rubber gloves and eye protection and make sure to wear old clothing as the acid stain will also stain your clothes. We buy our acid stains from Direct Colors.com and if you're not sure what color you want they also sell small sample size bottles.
My favorite acid stain colors, which I use and are shown throughout this website.
