Explore More Interior Moldings
SKU: CR1004
The Dunbar Interior Plaster Crown Moulding
Starting at $42.93 per 8' Length ($5.37/Ft)
Curved sections are available on request.
- Sizes5" to 12" Diagonal
- Length8 feet
The Dunbar Crown Moulding is a plaster-finished interior profile with recessed steps and a refined cove transition, creating deep shadow lines. It coordinates with The Dunbar Ceiling Beam.
Read more
This profile can be custom modified to suit site needs, without complex wood build-ups. Its one-piece construction, with a lightweight EPS core and authentic plaster finish, stays straight and crack-resistant season after season. Primed and painted after installation.
DAVIDE'S SUGGESTED STYLE KIT
Technical Specifications
| Diagonal Size | Ceiling Depth X Wall Height | Price (8' Length) |
|---|---|---|
| 5" DIAG. | 3-1/2" X 3-3/8" | $42.93 |
| 6" DIAG. | 4-13/16" X 4" | $47.68 |
| 7" DIAG. | 4-15/16" X 4-3/4" | $57.36 |
| 8" DIAG. | 5-11/16" X 5-3/8" | $63.82 |
| 9" DIAG. | 6-5/16" X 6-1/16" | $67.04 |
| 10" DIAG. | 7" X 6-5/8" | $75.84 |
| 11" DIAG. | 7-11/16" X 7-3/16" | $80.15 |
| 12" DIAG. | 8-3/8" X 8" | $88.86 |
| Length | 8 feet |
|---|---|
| Curved | Curved sections are available on request. |
| Core Material | Lightweight EPS foam core (ASTM C578 Type II) with a polymer-modified white cement base coat and a smooth, factory-applied plaster finish. |
|---|---|
| Dimensional Stability | Unlike wood or MDF, it won't shrink or warp with indoor humidity changes, and near-zero joint expansion keeps joints tight. |
| Installation | Installed with architectural adhesive on standard drywall and plasterboard. Read moreStandard lengths can be installed by one person. |
| Weight | Significantly lighter than traditional solid plaster, reducing the load on ceilings and walls. |
| Finishing | Arrives in a matte plaster-white finish. Read morePrime, then finish with a premium interior latex paint. |
| Fire | Fire-rated options are available on request with a Class A fire rating (flame spread 25, smoke developed 110) that helps meet ASTM E-84 and UL 263. |
| Customization | Custom profiles, arches, barrel vaults and curved cornices. Read moreFiberglass mesh reinforcement available on request for certain applications. |
INTERIOR PERFORMANCE COMPARISON
| Attribute | Mouldex Interior Mouldings | Traditional Plaster | MDF | Synthetics (Polyurethane / Polystyrene) |
|---|---|---|---|---|
| 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 | Class A fire-rated options on request | Non-Combustible | Combustible Wood Fiber | Flammable Polymers |






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.
Crown/Cornice Moldings
Ultra-smooth, ultra light single-piece interior cornices that replicate the look of hand-run architectural plaster.
View Collection →Light Coves
High-opacity valance mouldings designed specifically for integrated indirect LED lighting systems.
View Collection →Coffered/Waffle Ceiling Beams
Precision-cut monolithic waffle ceiling beam profiles engineered for rapid construction and seamless integration.
View Collection →Faux Wood Beams
Experience the beauty of custom faux wood beams. Lightweight. Cost effective. Beautiful. So real. It's unreal.
View Faux Wood Beams →Ready? We are.
Request a quote. Order a free sample kit. Or call/live chat with us about your project.
+1 (905) 660-6338 1 (888) MOULDEX
Live chat with Davide on the bottom right.






