| FavoredStoneGuides (2025)

If you want to bring a unique and sophisticated touch to your walls, thegeometric line finishis one of the best techniques you can use.

It blendsmodern minimalismwithartisan texture, making it an excellent choice forcommercial spaces,restaurants, andfeature wallsat home.

This guide will walk you step-by-step through how to create ageometric line concrete finish, using clean techniques and professional methods that ensure a strong, polished result.

What is a Geometric Line Finish?

Ageometric line finishuses sharp, clean lines embedded into the surface of plaster to create modern designs. It’s all about creating something a little different and unique—perfect for consumers who want to stand out without overwhelming their space.

You can achieve this effect with:

• Concrete plaster products
• Marmarino Fine
• Marmarino Medium
• Grassello and other Venetian plasters

The technique suits many types of materials, giving them extra depth and character.

What You’ll Need

Before starting, make sure you have the following tools and materials ready:

• Concrete plaster(pre-mixed)
• Stainless steel trowel(around 200mm x 80mm)
• Spatula or mixing tool
• Masking tape(use medium to high tack, not low tack)
• Natural beeswax
• Pinello brush
• Polishing cloth
• Sponge
• Clean water bucket
• Laser level(optional, but very helpful for larger walls)

Make sure yoursample boardor wall isclean,dust-free, and properlypreppedbefore beginning.

Step 1: Apply the Concrete Base Coat

Start by applying yourbase coatof concrete plaster:

• Load the material onto theoutside edgeof your trowel.
• Userandom, flowing motionsto lay the plaster. Concrete looks best when it’s not too uniform.
• Always work fromdry into wetsections to keep a smooth application.
• Cover the entire surface, ensuring no bare spots remain.

Pro Tip: Use all parts of the trowel—including corners and edges—to reach awkward areas and create a natural, organic look.

Once your base coat is complete,clean your toolsandlet it dry overnight. This ensures a strong foundation for the next steps.

Step 2: Plan and Apply the Geometric Masking

With the base dry, it’s time to lay down yourgeometric design:

• Usemedium-to-high tack masking tapeto avoid bleed-through.
• If you have access to alaser level, use it to make sure your lines are perfectly straight.
• Plan your design first. Simple intersections, right angles, and diagonal patterns work best for beginners.
• Apply the masking tape carefully, pressing it down firmly to avoid gaps.

You can get as creative as you like—this is your chance to define the final look!

Step 3: Apply the Top Coat of Concrete

Now it’s time to apply thetop coat:

• Apply concrete plastercarefullyover the entire surface, working around the taped lines.
• Hold the trowel at ashallow anglewithlight pressureto avoid pushing plaster under the tape.
• Be especially gentle near the tape edges to prevent shifting or damaging your design.

If you want to addextra texture, use aregardé trowelor lightly scratch the surface once it has firmed up slightly.

Pro Tip: Do not trowel over freshly scratched areas immediately. Allow them to dry slightly first to preserve the texture.

Step 4: Remove the Masking Tape

Timing is crucial when removing the tape:

• Wait10–20 minutesafter applying the top coat—long enough for the plaster to firm but not fully harden.
• Gentlypeel the masking tapeaway, working in the reverse order you applied it.
• Be careful to avoid damaging the edges of your fresh plaster.

After removing the tape, you’ll see yourgeometric patternperfectly revealed, crisp against the textured concrete.

Step 5: Allow to Fully Dry

After the tape is removed:

• Allow the entire surface todry overnight.
• Make sure there isgood air circulationin the space to speed up drying and avoid trapping moisture under the finish.

This sets the stage for final sealing and protection.

Step 6: Wax and Protect the Finish

Once completely dry, it’s time tosealthe finish withnatural beeswax:

• Shake the wax container thoroughly.
• Using asponge, apply athin, even coatof wax across the surface.
• Focus extra attention on thegeometric linesto ensure complete protection.
• After a few minutes,buff the surfacewith apolishing clothincircular motions.
• Wait 12 hours, then apply asecond coatfor maximum durability.

Why Wax?Wax fills the microscopic pores in the plaster, creating a moisture-resistant barrier. It protects the wall from grease, moisture, and staining—essential for long-term beauty.

Final Thoughts

Creating ageometric line concrete finishis a fantastic way to elevate a wall from ordinary to extraordinary.

Although it requirespatienceandattention to detail, the result is a trulyprofessional-looking, bespokepiece of wall art.

Here’s a quick recap:

If you follow these steps carefully, you’ll create a finish that wows every time. Whether you’re designing a restaurant feature wall, a corporate space, or a bold home statement, this technique delivers impact and elegance.

And remember—practice makes perfect. Each board you complete will build your skill and your eye for beautiful, textured finishes.