What makes The Dunbar Interior Plaster Coffered Ceiling Beam different from market alternatives?

Unlike traditional solid plaster which is heavy and fragile, or MDF and wood which shrink and expand, The Dunbar Interior Plaster Coffered Ceiling Beam utilizes a high-density composite core with a signature hybrid plaster finish. This provides the authentic ultra-smooth aesthetic of hand-run architectural cornices while remaining lightweight and crack-resistant.

What colors does The Dunbar Interior Plaster Coffered Ceiling Beam arrive in?

The Dunbar Interior Plaster Coffered Ceiling Beam arrives in a matte plaster white finish. This factory-applied coating acts as a premium architectural primer, providing a perfectly smooth substrate for any high-quality interior latex paint to ensure a seamless color match with your ceiling.

Can The Dunbar Interior Plaster Coffered Ceiling Beam be manufactured in curved or arched profiles?

Yes. We specialize in precision-manufacturing The Dunbar Interior Plaster Coffered Ceiling Beam into custom interior arches, barrel vaults, and curved cornices. Using digitally controlled technology, we achieve geometric precision and deep architectural detail that traditional wood or MDF cannot replicate.

Will The Dunbar Interior Plaster Coffered Ceiling Beam crack or separate at the joints over time?

No. The Dunbar Interior Plaster Coffered Ceiling Beam is 100% inorganic and thermally stable, meaning it will not shrink or warp due to indoor humidity changes. This engineering prevents the common miter-gap and joint separation issues seen with wood and MDF, keeping your interior lines seamless.

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The Dunbar Interior Plaster Coffered Ceiling Beam

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SKU: CB1004

The Dunbar Interior Plaster Coffered Ceiling Beam

Q: How is The Dunbar Interior Plaster Coffered Ceiling Beam installed?

Installation of The Dunbar Interior Plaster Coffered Ceiling Beam is fast and typically nail-free. The lightweight profiles are mounted using high-tack architectural adhesive for a secure bond to standard drywall. This method eliminates the need for messy, multi-day traditional plaster work and prevents future fastener-head pops.

$140.00 per 8' Length ($17.50/Ft)

The Dunbar is a preeminent interior ceiling beam designed to provide the timeless look of decorative plaster with a sophisticated, multi-tiered profile. Specifically engineered for luxury waffle and coffered ceiling systems, it features elegant recessed steps and a refined cove transition that create deep, high-contrast shadow lines, adding immediate architectural prominence to any grand room.

This profile can be custom modified to suit site needs, offering a monolithic finish that eliminates the need to layer multiple wood members. The signature ultra-smooth plaster coating delivers a stately masonry appearance that remains dimensionally stable and perfectly straight, providing a crack-free aesthetic for the life of the project.

DIMENSIONS

CEILING DEPTH: 12"

WALL HEIGHT: 8"

Perimeter beams are available.

PRICE

8' Length: $140.00

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THE DUNBAR

interior plaster crown cornice

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How to Install Mouldex Interior Moldings

How to Install Mouldex One Piece Coffered Ceiling Beams

INTERIOR PERFORMANCE COMPARISON

Attribute	Mouldex Interior Mouldings	Traditional Plaster	MDF (Metrie / Alexandria)	Synthetics (Ekena / Orac Decor)
Finish Quality	Genuine Smooth Plaster	Hand-Run Smooth Plaster	Painted Fiber (Grainy Texture)	Molded "Plastic" Look
Stability	Crack-Resistant Composite	Prone to Hairline Cracks	High Joint Expansion	Brittle over time
Fire Safety	Non-Combustible Surface	Non-Combustible	Combustible Wood Fiber	Flammable Polymers

Interior Molding Summary

Inorganic Composition

100% moisture-inert. Will not rot, warp, or crack.

Versatile Compatibility

Expertly bonds to drywall and decorative interior surfaces.

Bespoke Customization

Unlimited profile designs including custom arches and circles.

Unmatched Finish

Authentic plaster finish without the complications of traditional plaster.

Lifetime Stability

Zero-joint expansion with monotlithic profile manufacturing.

Weight Efficiency

90% lighter than traditional plaster moldings.

Panoramic view of the Tiffany & Co. Canadian flagship store in Toronto at Yorkdale Mall, featuring custom-curved architectural ceiling mouldings and grand circular showrooms by Mouldex Composites.

Expansive great room and kitchen from "Moving the McGillivrays" featuring custom vaulted coffered ceilings and architectural wall panels by Mouldex Composites.

Luxury hotel suite interior at Atlantis Bahamas featuring integrated LED light coves and plaster-coated foam crown mouldings in a modern tray ceiling design.

Complete Interior Moulding System Line

Decorative interior mouldings are primarily made from plaster-coated EPS, offering modern options suited to both traditional and contemporary spaces and supporting a wide range of design aesthetics. Explore our lightweight interior crown mouldings, including The Alston, and our one-piece coffered ceiling beams for dimensional detail overhead without the weight of solid millwork. Selecting mouldings means matching the architecture and scale of the room — combining profiles thoughtfully can help a space feel taller, larger, or more finished throughout.