Foamboard, Black

Black Foamboard Sheets

The Industry Standard for Lightweight Structural Prototyping, Presentation Mounting, and 3D Construction

This premium foamboard is the industry standard choice for architects, hobbyists, tabletop gamers, and design professionals who require a balance of structural rigidity and effortless workability. Proudly manufactured in the United Kingdom, it features a lightweight, rigid design consisting of a dense, pH neutral polystyrene foam core sandwiched perfectly between two layers of acid free paper. This high specification composition ensures the board remains completely flat and stable, providing a highly reliable foundation for intricate model building, durable 3D structures, and long term presentations without the risk of yellowing or material degradation.

Key Performance Features

• Premium British Manufacture: Built using a non toxic and CFC free dense polystyrene core to ensure a highly stable and structurally uniform sheet.
• Archival Quality Surface: The acid free paper liners provide a smooth, camera ready face that accepts technical drawings, scenic paints, spray mount, and vinyl applications beautifully without warping.
• Effortless Manipulation: It provides enough structural integrity to hold its shape under light stress while remaining exceptionally easy to hollow out, score, or laminate for varying project thicknesses.

Essential Tools for Foamboard Fabrication

Having the correct tools ensures crisp, clean edges and prevents the internal foam core from crushing or tearing during assembly.

• Cutting Tools: Use a heavy duty utility knife or a dedicated craft knife paired with a fresh pack of number 11 replacement blades. Foamboard dulls blades rapidly, and a dull blade will tear the inner foam core instead of cutting it cleanly.
• Cutting Guide and Mat: Always use a heavy steel ruler with a non slip backing to ensure perfectly straight lines and prevent the blade from skipping. Protect your workspace and extend your blade life with a self healing cutting mat.
• Foam Safe Adhesives: Paired best with specialised foam safe glues such as UHU Por, Zap PT25 Zap-O CA, or standard white PVA glue. Standard high temperature hot glue will melt the internal polystyrene core, so always opt for a low temperature hot glue gun instead.

Pro Cutting Techniques: The Three Pass Rule

To avoid tearing and achieve a professional, flush edge, never try to cut completely through the foamboard in a single stroke. Instead, practice the three pass rule:

1. First Pass: Guide your blade gently to slice cleanly through only the top layer of paper.
2. Second Pass: Deepen your cut to slice completely through the internal foam core layer.
3. Third Pass: Make a final pass to slice cleanly through the bottom backing paper layer.

Throughout all passes, ensure your blade maintains a strictly perpendicular alignment. Tilting the knife creates sloped edges that prevent your pieces from joining at a true 90 degree angle.

Advanced Joining Methods

• Butt Joint: The simplest connection where one piece is glued directly against the flat face of another, leaving the raw foam edge visible.
• Rabbet Joint: The foam core and one paper layer are stripped away along a thin strip at the edge of one board. The second board nests inside this recessed channel, completely hiding the raw foam from view.
• Mitre Joint: Both mating edges are sliced at a precise 45 degree angle. This creates a seamless, highly professional 90 degree corner with completely hidden foam edges.

Texture Finishing and Painting Safety

• Peeling and Scribing Foam: The paper liners can be peeled back to expose the raw bare foam texture underneath. You can press textures directly into this exposed foam using aluminium foil balls to simulate stone, or use a dull pencil to scribe highly realistic brick and wooden plank patterns.
• Painting Safety: Solvent based aerosol spray paints will instantly melt bare polystyrene foam. To protect your structural work, always seal the foam first or use water based acrylic paints exclusively.

Technical Specifications

• Core Material: Dense Polystyrene (Non toxic and CFC free)
• Surface Liners: Acid free pH neutral paper
• Colour: Black
• Size and Quantity: Available in multiple sheet size and pack options
• Origin: Manufactured in the United Kingdom

Applications

• Architectural Modelling: An essential medium for site models, conceptual massing studies, interior partitioning, and clean geometric elevations.
• Film, TV, and Set Design: Perfect for creating lightweight flats, internal structure supports for props, or quick turnaround set mock ups.
• Prototyping and Industrial Design: Ideal for ergonomic packaging studies and 1:1 scale product prototypes that must remain lightweight yet rigid.
• Exhibition and Graphic Display: The preferred choice for mounting high resolution renders and presentation boards, easily secured to walls using adhesive tape or Velcro without the need for heavy fixings.

Note: Please select your required sheet size and pack quantity from the options available below.