GUIDE 4 OF 8 · MATERIALS
Boards & Surface Preparation
A smooth design begins with a stable, compatible surface. Treat the panel, preparation, primer, paint, and exposure as one complete system.
Choose a purpose-suited panelMDO sign panels and aluminum composite material
MDO and other purpose-rated sign panels are designed for painted applications and can provide a smooth, stable face. Aluminum composite material is lightweight for its size and dimensionally stable. Confirm the exact product’s exposure rating, edge treatment, coating compatibility, and mounting requirements.
Inspect before preparingFaces, edges, damage, and flatness
Check both faces, every edge, corners, cutouts, factory coatings, dents, contamination, and panel flatness. Decide where mounting holes or brackets will go before applying the final finish.
Clean and prepare the surfaceFollow the panel and coating instructions
Remove dust, oil, release agents, and loose material using methods approved for the exact panel. Avoid creating deep scratches or polishing the surface so smoothly that coatings cannot bond.
Protect edges and penetrationsMoisture paths and mounting details
Cut edges, drilled holes, fastener locations, and panel joints deserve the same planning as the painted face. Complete any required sealing or compatible preparation before the decorative layers make access difficult.
Prime and base coatCreate an even, cured drawing surface
Use only compatible products, respect application and recoat conditions, and cover the entire intended system sample. The finished base should be uniform, stable, and cured enough for measuring, erasing, and painter’s tape.
Run an adhesion and masking testTest the complete system on scrap
Use the actual panel, preparation, primer, base coat, color coat, tape, and expected timing. Confirm coverage, edge sealing, tape removal, and adhesion before committing to the finished project.