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Sills & bands

Tired of flat, forgettable facades? Royal Foam engineers exclusive decorative foam sills and bands that deliver the bold, clean lines of precast concrete without the weight, cost, and complexity that drain your budget and timeline. We empower architects and developers to add depth, rhythm, and character to any structure, turning a simple building into a landmark statement.

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What are architectural sills & bands?

These aren’t just trim pieces; they’re the details that define your design.

The details that define the entire design

Elegant, functional, and essential for high-end design, our architectural sills and bands are the finishing elements that create a polished, cohesive look. They add visual weight and sophisticated detail to window and door surrounds, break up monotonous wall surfaces, and establish a powerful design language across the entire building envelope.

Each element is crafted for a specific architectural purpose:

  • Decorative Window Sills: The foundational element beneath a window or opening. Our decorative window sills provide a crisp, supportive ledge that channels water away and creates a strong horizontal anchor for the design.
  • Architectural Bands: Continuous horizontal profiles that wrap the building. Also known as bandings or belt lines, they create visual separation between floors, cap wall sections, or add a dynamic linear feature to the facade.

Get the precision-molded profiles that bring your elevations to life.

Engineered for precision. Coated for immortality

Our architectural elements are born from a fusion of advanced material science and precision engineering. The process starts with a solid block of high-density Expanded Polystyrene (EPS) foam, which is CNC-machined to your exact profile specifications. This gives us a geometrically perfect, yet incredibly lightweight, core.

That core is then encapsulated in our signature polyurea hard coat. This isn’t just a layer of paint; it’s a spray-applied elastomer that cures in seconds to form a seamless, waterproof, and impact-resistant shell. This “armor” transforms the foam into a monolithic structure with unbelievable strength, ready to withstand decades of weather, moisture, and UV exposure.

The final surface is a textured, architectural finish that provides the authentic look of masonry and a perfect canvas for any color you specify.

Assortment of sills & bands

Engineered foam vs. precast concrete:
The unfair advantage

Ready to build smarter?

Stop wrestling with heavy, brittle, and unforgiving materials. There’s a smarter way to build. Choose lightweight, durable, and fully customizable architectural elements—built to last, made in the USA.

Let's engineer your next facade!

Discuss my project

Extremely heavy

Requires cranes, reinforced structures, and large crews, driving up costs and timelines.

A slow, labor-intensive process

Requires specialized crews and is vulnerable to costly weather delays.

Porous and brittle

Prone to cracking, water damage, and staining. Requires ongoing, costly maintenance.

Limited by heavy, expensive molds

Custom designs are extremely costly with very long lead times.

High upfront and long-term costs

Expensive labor, machinery rentals, and structural needs inflate the budget.

Featherlight & Agile

90% lighter. No cranes or structural reinforcement needed. Slash shipping costs and jobsite complexity.

Install hundreds of feet in a single day

A small crew with standard tools gets it done, accelerating your timeline.

Impervious to everything

Waterproof polyurea shell won't crack, chip, or rot. Zero maintenance for an 80-100 year lifespan.

Unlimited design freedom

If you can draw it, our CNC technology can create it—from modern profiles to historic replicas.

Lower total project cost

Save big on labor, equipment, shipping, and engineering. A smarter investment.

Сustom sills & bands

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0247from $97.25
0237from $97.25

How to order your architectural sills & bands

From your initial CAD file to job site delivery—our process is transparent, fast, and engineered for your success.

It all begins with a deep dive into your project. We work as your technical partner to translate creative intent into a solid, actionable plan.

  • Analyze Your Inputs: We review your architectural plans, CAD files, sketches, and inspirational images to understand your design from every angle.
  • Define the Scope: In a collaborative consultation, we discuss the project’s aesthetic goals, site conditions, and technical requirements to ensure a perfect fit.
  • Establish a Technical Blueprint: We finalize all specifications, from dimensions to finish textures, creating a clear roadmap for fabrication that aligns perfectly with your vision.
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We bridge the gap between concept and cost, providing you with the clarity and confidence to move forward.

  • Receive a Detailed 3D Visualization: We create and send you a precise 3D model, allowing you to see exactly how your custom architectural elements will look before production begins.
  • Get a Transparent, Itemized Proposal: You receive a clear, comprehensive quote with no hidden fees. We believe in total transparency, so you know exactly what you’re investing in.
  • Maintain Complete Control for Final Approval: We don’t proceed until you are 100% satisfied. You have the final say on the design and budget before we move to the next stage.
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This is where your approved design becomes a physical reality, crafted with an obsessive focus on quality in our 45,000 sq. ft. workshop.

  • Execute with Robotic Accuracy: Our state-of-the-art CNC hot-wire machines carve your decorative architectural shapes with flawless precision, matching your approved 3D model to the millimeter.
  • Armor for a Century of Performance: Our skilled artisans apply our signature Polyurea hard coat, creating a seamless, impact-resistant, and weatherproof shell designed for decades of durability.
  • Verify Through Rigorous Quality Control: Every single piece undergoes a multi-point inspection to ensure it meets our exacting standards for form, finish, and structural integrity.
Write to WhatsApp

Our commitment extends all the way to your job site, ensuring a smooth and successful installation.

  • Protect with Secure, Custom Crating: We build custom shipping crates for your elements, ensuring they arrive on-site in pristine, ready-to-install condition.
  • Streamline Your Installation: Your pieces are delivered pre-assembled and lightweight, designed to slash on-site labor time and eliminate the need for heavy machinery.
  • Support Your Crew to the Finish Line: We provide detailed installation guides and offer live Zoom support to answer your team’s questions, guaranteeing a perfect final fit.
Write to WhatsApp

It all begins with a deep dive into your project. We work as your technical partner to translate creative intent into a solid, actionable plan.

  • Analyze Your Inputs: We review your architectural plans, CAD files, sketches, and inspirational images to understand your design from every angle.
  • Define the Scope: In a collaborative consultation, we discuss the project’s aesthetic goals, site conditions, and technical requirements to ensure a perfect fit.
  • Establish a Technical Blueprint: We finalize all specifications, from dimensions to finish textures, creating a clear roadmap for fabrication that aligns perfectly with your vision.
Write to WhatsApp

We bridge the gap between concept and cost, providing you with the clarity and confidence to move forward.

  • Receive a Detailed 3D Visualization: We create and send you a precise 3D model, allowing you to see exactly how your custom architectural elements will look before production begins.
  • Get a Transparent, Itemized Proposal: You receive a clear, comprehensive quote with no hidden fees. We believe in total transparency, so you know exactly what you’re investing in.
  • Maintain Complete Control for Final Approval: We don’t proceed until you are 100% satisfied. You have the final say on the design and budget before we move to the next stage.
Write to WhatsApp

This is where your approved design becomes a physical reality, crafted with an obsessive focus on quality in our 45,000 sq. ft. workshop.

  • Execute with Robotic Accuracy: Our state-of-the-art CNC hot-wire machines carve your decorative architectural shapes with flawless precision, matching your approved 3D model to the millimeter.
  • Armor for a Century of Performance: Our skilled artisans apply our signature Polyurea hard coat, creating a seamless, impact-resistant, and weatherproof shell designed for decades of durability.
  • Verify Through Rigorous Quality Control: Every single piece undergoes a multi-point inspection to ensure it meets our exacting standards for form, finish, and structural integrity.
Write to WhatsApp

Our commitment extends all the way to your job site, ensuring a smooth and successful installation.

  • Protect with Secure, Custom Crating: We build custom shipping crates for your elements, ensuring they arrive on-site in pristine, ready-to-install condition.
  • Streamline Your Installation: Your pieces are delivered pre-assembled and lightweight, designed to slash on-site labor time and eliminate the need for heavy machinery.
  • Support Your Crew to the Finish Line: We provide detailed installation guides and offer live Zoom support to answer your team’s questions, guaranteeing a perfect final fit.
Write to WhatsApp

Our project gallery

The perfect profile for every project

From architectural vision to market-ready property, our elements deliver value at every stage.

For Architects & Designers

Finally achieve the clean, monolithic look you’ve envisioned. Specify intricate modern window sills or sweeping, continuous bands without worrying about weight or structural limitations. We provide the technical partnership to bring your most ambitious elevations to life.

For Developers & Builders

Increase curb appeal and accelerate project timelines. Our lightweight elements install in a fraction of the time of concrete, getting your properties market-ready faster. It’s the most cost-effective way to create a high-end look that sells.

For Commercial Properties

Make your building a landmark. From corporate headquarters to retail centers and hotels, our custom sills and bands create a powerful, sophisticated brand identity that communicates quality and permanence from the first glance.

For Custom Homeowners

Add timeless elegance to your home’s exterior or create unique interior features. Our products are perfect for everything from classic exterior decorative window sills to sleek, modern interior window sills that add a custom touch to your living space.

From flat to fantastic:
A facade transformation

Before

The Challenge: A new multi-family residential building had solid fundamentals but lacked architectural character. The flat facade looked generic and failed to project the premium image needed to attract target residents and command higher rents. The developer needed a high-impact visual upgrade without the cost or structural burden of precast concrete.

After:

The Solution: We fabricated and delivered a complete system of decorative window sills and horizontal bands, engineered to the architect’s exact specifications. A small crew installed the lightweight elements on all four elevations in just three days, using only standard adhesives and mechanical fasteners.

The ROI: The building was instantly transformed from a generic box into a sophisticated, high-end property. The powerful new aesthetic not only justified a 15% increase in rental rates but also led to a full lease-up months ahead of schedule. It was a strategic investment that paid for itself before the doors even opened.

Discover our work

More than trim
It's a statement

Architectural elements are the language of your building. They tell a story of quality, intention, and attention to detail.

  • Create Visual Hierarchy & Control
    Sills and bands are not just decoration; they are tools for guiding the eye. They establish rhythm, create deliberate focal points, and give a sense of order and stability to the entire structure, making the design feel intentional and complete.
  • Signal Quality and Perceived Value
    Just like a tailored suit, crisp architectural details signal a higher standard. A building with well-defined lines and thoughtful accents is perceived as more valuable, more permanent, and better constructed, attracting premium tenants and buyers.
  • Build a Cohesive Brand Identity
    Your building's facade is your brand's first handshake. Whether you need the sleek, minimalist profile of modern window sills for a tech campus or a classic, robust look for a financial institution, our custom capabilities ensure your architecture is a perfect extension of your brand.
More about partnership

Voices of our clients

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

FAQ

See more

Your essential design & spec 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!

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Your essential design & spec 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!