Your essential design
& specification catalog

Get the definitive guide to our custom decorative architectural foam shapes. This free catalog is packed with hundreds of design profiles, detailed technical specifications, and real-world project applications.

Download Free Catalog
Let's build something great together

Have a project in mind?

Our dedicated specialists are ready to collaborate with you, turning your concept into a detailed plan with a transparent budget. Let’s bring your vision to life!

Crown Moldings polystyrene foam – CR 003

Crown Moldings polystyrene foam – CR 003

Any Custom Size Available
Custom Size Request a Quote 

Increase the value of your home and transform ordinary to interesting with over 100 designs, we have something to match every décor style. Lightweight for quick and easy installation

1. CORE OF STRUCTURE IS MOLDED EXPANDED POLYSTYRENE (1#CF).
2. AROMATIC FAST…

from $97.25

Any Custom Size Available
Custom Size Request a Quote 

Increase the value of your home and transform ordinary to interesting with over 100 designs, we have something to match every décor style. Lightweight for quick and easy installation

1. CORE OF STRUCTURE IS MOLDED EXPANDED POLYSTYRENE (1#CF).
2. AROMATIC FAST CURE URETHANE, IMPACT RESISTANT, HARD COAT FINISH.
3. TEXTURED FINISHED SURFACE IS 100% AGGREGATED ACRYLIC.

Sharp design clarity and high quality, limitless pattern options
Can be cut, drilled, glued or screwed with common tools
Factory primed and ready for paint or faux finish
Resistant to moisture, insects, and peeling or splitting

 

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Architectural Shapes — your trusted partner

We create custom decorative shapes for architects, builders, developers, hotels, and homeowners — delivering elegant, durable, and easy-to-install solutions across the USA.

Expert craftsmanship, design precision

Our team draws from decades of experience in classical and modern architecture, ensuring each column delivers both visual elegance and structural reliability.

Lightweight yet strong materials

Unlike traditional stone, our EPS-based columns are reinforced and coated for strength. They’re easy to install, highly durable, and weather-resistant — perfect for any U.S. climate.

Fully customizable options

From proportions and fluting to base and capital details, every element can be tailored to match your project’s style and scale.

Client testimonials

From your first idea to the final installation — our process is clear, fast, and designed to make every detail simple.

Lightweight cornice system was a game-changer for our multi-family project. We achieved a high-end, classic look without the structural costs of precast concrete. Installation was incredibly fast, saving us weeks on our schedule and tens of thousands in labor. We’re specifying them for our next three buildings.

Grace ParkerAlbuquerque, NM

As an architect, I’m constantly fighting to keep my best design elements from being cut. Decorative Architectural Shapes gives me the freedom to design complex, large-scale profiles that are both buildable and affordable. Their technical support and precision fabrication are second to none. They don’t just sell a product; they deliver a solution.

Jackson TurnerOmaha, NE

For our historic renovation project in Boston, we needed to replicate ornate 19th-century cornices without overloading the original structure. Decorative Architectural Shapes delivered flawless, lightweight reproductions that were indistinguishable from the originals. Their precision saved the building’s integrity and the project’s budget.

Liam O'ConnellBoston, MA

The speed of installation was a game-changer. We finished the exterior trim on a 100-unit complex in days, not weeks. The material is light, easy to handle, and looks fantastic. Decorative Architectural Shapes directly contributed to us finishing ahead of schedule and under budget.

Marcus ThornePhoenix, AZ

I’m no longer limited by the weight of concrete or the simplicity of wood. For a boutique hotel in Miami, I designed a complex, undulating facade element. The team at Decorative Architectural Shapes turned my CAD file into a stunning, seamless reality. Their work empowers true creative freedom.

Isabella RossiMiami, FL

My crew loves working with this stuff. No heavy lifting, no complex rigging, and the pieces fit together perfectly right out of the crate. We spend less time on site and have fewer issues. It makes our job easier and the final product looks sharp every time.

Caleb JensenChicago, IL

FAQ

See more
Your essential design
& specification catalog

Get the definitive guide to our custom decorative architectural foam shapes. This free catalog is packed with hundreds of design profiles, detailed technical specifications, and real-world project applications.

Download Free Catalog
Let's build something great together

Have a project in mind?

Our dedicated specialists are ready to collaborate with you, turning your concept into a detailed plan with a transparent budget. Let’s bring your vision to life!

More architectural shapes

We provide architects, builders, and homeowners with turnkey decorative elements that transform any project — fast, easy, and cost-effective.

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Exterior Wall Niches

Exterior wall niches

Decorative Moldings

Decorative moldings

Decorative Trims

Decorative trims

Sills & Bands

Sills and bands

Crown Moldings

Crown moldings

Commercial and Residential Cornices

Commercial and residential cornices

Juliet Balcony

Juliet balcony

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Crown moldings

Our decorative molding profiles are manufactured in the United States, at our facility in Florida, which allows us to control every stage of production. When we provide a 20-year warranty, we do so with full confidence, knowing that our products can truly perform for those 20 years when properly installed and maintained.

crown molding ideas

We deliver fully finished architectural components — ready for installation, pre-painted, coated with protective layers, and fabricated with geometric precision up to 0.5 mm. Stable in terms of geometry, capable of handling loads, and requiring virtually no additional effort during installation. Architects, contractors, and developers all appreciate this level of predictability when working with foam-based architectural components. This is especially important on large projects where significant volumes of molding must be installed and where stability, consistency, and the absence of on-site trimming or modifications are critical. It allows teams to achieve maximum results with minimal labor and minimal installation time.

Architectural foam is inherently stable and behaves predictably across a wide range of conditions. Whether exposed to fluctuating temperatures, prolonged direct UV radiation, high humidity, or strong winds, the geometry of architectural foam remains accurate, and the exterior appearance of the product does not deteriorate.

The specialized protective coating further extends the material’s longevity without altering its performance characteristics. Architectural foam components can reliably serve for up to 20 years — a duration we confidently guarantee because we stand firmly behind the quality of every product we manufacture.

crown molding home depot

The modern profile of a crown molding

 

Modern crown moldings are engineered building components. They must meet performance expectations like any other architectural element. Foam allows us to meet these expectations with repeatable precision:

  • predictable thermal behavior;
  • extremely low expansion and shrinkage rates;
  • stable geometry even on long sections;
  • detailed surface textures with 0.2–0.5 mm accuracy;
  • corner joints aligned to CNC tolerances.

Our decorative crown molding corners are produced under the same calibration settings as the straight sections, so the geometry matches across every batch. And our custom crown molding capability ensures we can replicate any architectural profile with tolerances that older materials simply cannot match.

Material technology and engineering standards of crown moldings

Technical DomainSpecific AttributeMeasured Range / ValueEngineering Interpretation
Core Structural MatrixDensity spectrum~18.5–29.7 lb/ft³Density is selected based on span length, profile elevation, and stiffness requirements.
Compression Load EnduranceTest protocol (ASTM D1621 equivalent)18–25 psiEnsures the core maintains form during handling and installation stresses.
Exterior Composite ShieldReinforced coating thickness~2.1–4.3 mmPolymer-cement skin with fiberglass micro-mesh dramatically increases impact resistance.
Flexural Response CapacityBending strength40–55 psiPrevents micro-fracturing on extended profile sections.
Digital Geometry PrecisionCNC machining tolerance±0.45–1.0 mmStability is preserved across batches due to unaltered digital toolpaths.
Thermal Movement BehaviorLinear expansion coefficient<0.01% per 10°FAllows 20–30 ft continuous runs to remain visually straight without bowing.
Factory Finish SystemDual-layer acrylic coating2–3 milsEliminates all field finishing or priming activities.
Linear Weight ProfileWeight per foot0.6–1.2 lb/ft8–12 times lighter than gypsum, significantly reducing load on framing.
Production Length OptionsSupplied lengths96–144 in (±1/16 in)Extended lengths available for lobbies, atriums, and long corridor applications.
Corner Coherence PrecisionCNC-aligned corner geometry±0.5 mmProduces virtually invisible seam transitions at normal viewing distances.
Hydro-Barrier PerformanceMoisture resistance≥98%, zero capillarityNo swelling, mold formation, or material softening.
Water Absorption IndexASTM C272<1% by volumePerforms reliably in high-humidity regions such as coastal Florida.
Combustion BehaviorFlame classificationClass A (ASTM E84)Flame spread index ≤25; suitable for hotels, hospitals, schools.
Surface Hardness MetricShore scaleD 55–60Comparable to high-performance architectural polymer finishes.
Dimensional LongevitySeasonal shrinkage<0.1%Maintains geometric integrity across temperature cycles.
Color Precision FactorSpectrophotometric deltaΔE < 1.5Ensures visual compatibility with trims and wall systems.
Adhesive Bond CapacityASTM C29718–25 psiCompatible with commercial adhesives; delivers strong structural adhesion.
Acoustic Reflection ResponseResonance behaviorLowReduces flutter echo in extended hallways.
Thermal Operating EnvelopeApproved temperature range–20°F to +120°FGeometry remains stable in both cold and hot environments.
Substrate Compensation ToleranceWall/ceiling deviation limitUp to 3 mmAdhesive layer eliminates the need for additional surface preparation.
Installation Output RateLinear install speed25–35 ft/hr (single installer)No wet trades required; dramatically accelerates project timelines.
Curved Geometry CapabilitiesRadius availability24–60 inDigitally shaped radius profiles for custom curvature requirements.
Quality Assurance Framework7-stage QC protocolAll batches digitally logged and cross-checked.
Inventory ServicesComplimentary storageUp to 6 monthsClimate-controlled warehousing keeps product stable.
Shipping Protection DesignMulti-layer packaging systemFoam layering + reinforced corner guards for long-haul protection.
Warranty StatementPerformance guarantee20-year warrantyCovers geometry retention and coating integrity.
Production OriginManufacturing locationUSA, FloridaFull domestic production control and traceability.
how to install crown molding

Design evolution architectural elements, including foam crown moldings

 

Today, the market for architectural elements especially of crown moldings has changed dramatically. Ten or twenty years ago, classical decorative components dominated, but now the trend has shifted toward minimalist, clean, and simple architectural forms—and crown moldings are no exception. At the same time, we’ve noticed that our clients increasingly seek customized, unique pieces and come to us knowing we can deliver exactly what they envision. They choose clean, geometric, minimalist lines, yet still want their architectural elements to feature a small distinctive detail or visual accent. We can easily bring these ideas to life—whether by creating the accent ourselves or by working from the client’s sketches, drawings, or photos.

Foam-based architectural components are exceptionally well suited for these kinds of requests. One of our recent large-scale projects, where we produced a significant volume of crown moldings, clearly demonstrated this advantage. Installation teams expressed their appreciation for the fact that clients selected foam elements, as the installation time was reduced by 20–30%. And even with a 12-foot crown molding, a single installer could handle the piece without assistance—because each one weighs less than 15 pounds.

modern crown molding

Applications and profile types of crown moldings

 

Modern profiles of crown moldings

Used in virtually any type of interior — business environments, private homes, and public institutions. Anywhere geometric precision is required and where the interior needs to look complete and visually harmonious.

Decorative architectural crown moldings

For example, we once produced architectural elements for a lobby in St. Petersburg, Florida, and that project clearly demonstrated how decorative foam crown moldings—seemingly a small detail—can soften the geometry of a space, add visual accents, and bring the entire interior together into a more harmonious, cohesive environment.

Custom-engineered crown moldings

Are designed specifically for each project. We often work with designers, architects, and developers who come to us because they need a special geometry, a unique shape, or something out of the ordinary. In such cases, the priority shifts from aesthetics to engineering. We create a 3D file where we verify the alignment of all lines and joints, test the required radii, and only then proceed to shaping the visual design. This approach completely eliminates installation challenges on site and allows the decorative elements to be mounted quickly and seamlessly.

Installation and maintenance of crown moldings — expanded, technical, step-by-step

 

Installation of foam crown moldings is a controlled technical process, not guesswork.

#Installation StepTechnical Process and Advantages
1Substrate evaluationIf the surface deviation ranges within 1–3 mm, this is completely normal, especially in commercial architectural projects. Foam crown moldings easily compensate for such variations and do not require any additional intervention or surface leveling.
2Dry alignmentInstallers first position the profiles without any adhesive, and once they confirm that the CNC-cut ends fit together perfectly, they apply the adhesive and secure the architectural elements in place. This approach reduces installation time by approximately 20–30%.
3Adhesive bead applicationPrecision application of structural adhesive to the mounting surfaces to ensure a permanent bond with the substrate.
4Mechanical fixationBecause the elements are very lightweight, there is no need for complex fastening systems. Light temporary pins are sufficient to hold the pieces in place until the adhesive cures.
5Joint finishingThe foam has a highly uniform texture, which means that even untreated joints remain barely noticeable, as the gaps are minimal. The reinforced protective coating further reduces the visibility of these joints, allowing them to blend in as much as possible.
6Final cleanupNo sanding, filling, priming, or painting. The factory-applied dual-coat acrylic finish is ready for immediate use.

 

Maintenance

The coating resists micro-cracking because its flexural strength accommodates building vibrations. Even after 10–15 years, installations we’ve revisited show no signs of discoloration or deformation.

foam crown molding

Why partners rely on us — expanded, engineering-focused version

 

Clients choose us because we provide engineered certainty. Every element is manufactured in our U.S. facility under controlled conditions. This means no supply chain unpredictability, no variable quality between batches, and no long-distance import delays. Our facilities operate with digital profile libraries, precise CNC routing, automated paint metering systems ensuring consistent coat thickness, and structured QC logs.

Design teams rely on our accuracy. When they specify a profile height of 5⅝ inches, they receive exactly 5⅝ inches ±0.5 mm — not an approximation. When they request a custom texture, we replicate it with controlled depth. When they bring a physical finish sample, we match it with ΔE < 1.5 color accuracy.

Construction teams especially appreciate that foam architectural elements are extremely easy to install—their low weight eliminates the need for specialized equipment or advanced technical skills. Developers, in turn, value the fact that by choosing foam architectural components, they can be confident they will stay within budget, meet project deadlines, and achieve a flawless visual result.

Our ability to combine striking, visually compelling design with precise engineering solutions is the foundation of the long-lasting partnerships we build with our clients — relationships that are never just one-off. And the 20-year warranty we provide for our architectural elements further emphasizes that when you choose our products, you are investing not simply in an item, but in a high-quality solution that will perform reliably for years.

crown molding installation

Architectural elements, by their very nature, are not just small decorative accents. They also serve a number of practical functions essential for achieving a cohesive and well-designed interior. They can conceal mechanical and electrical systems and help unify the space, contributing to a balanced and intentional visual effect.

Our foam crown moldings are lightweight and can be color-matched with exceptional accuracy since we offer fully customized solutions. They are also thermally stable, and the fact that they are manufactured in the United States allows us to maintain full control over every stage of production. This gives us complete responsibility for compliance with building, fire-safety, and architectural standards.

In addition, because our manufacturing facility is located in Florida, we can reliably reproduce architectural elements in any quantity required. All specifications, drawings, geometries, color formulas, and surface textures remain stored in our internal database, making repeat orders fast, consistent, and seamless.

Our production methods, technical support, and material quality testing ensure that every crown molding precisely matches the design geometry and fully complies with performance and durability requirements. Whether the project calls for clean modern minimalism, a more traditional classic look (like wood or stone), or distinctive decorative detailing with custom geometry, we provide solutions that stay true to the original design intent.

If you would like a project estimate, simply send us a photo, drawing, or sample — we will prepare a detailed quotation for you as quickly as possible.

Your essential design
& specification catalog

Get the definitive guide to our custom decorative architectural foam shapes. This free catalog is packed with hundreds of design profiles, detailed technical specifications, and real-world project applications.

Download Free Catalog
Let's build something great together

Have a project in mind?

Our dedicated specialists are ready to collaborate with you, turning your concept into a detailed plan with a transparent budget. Let’s bring your vision to life!