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SKU: CB1001
The Alston Interior Plaster Coffered Ceiling Beam
$140.00 per 8' Length ($17.50/Ft)
Curved sections are available on request.
- Ceiling Depth12"
- Wall Height8"
- Length8 feet
The Alston is a one-piece interior coffered ceiling beam with a graceful, deep-cove profile. The soft, sweeping cove lets the grid blend smoothly into the ceiling panels, adding a sense of height and elegance.
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This profile can be custom modified to suit site needs, giving generous scale without layering multiple wood members or large mouldings. Its smooth plaster finish gives a refined, monolithic surface, on a lightweight EPS core that stays dimensionally stable and straight. Primed and painted after installation.
DAVIDE'S SUGGESTED STYLE KIT
Technical Specifications
| Ceiling Depth | 12" |
|---|---|
| Wall Height | 8" |
| Length | 8 feet |
| Price | $140.00 per 8' Length ($17.50/Ft)Curved sections are available on request. |
| Perimeter | Perimeter beams are available. |
| 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.
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