Bona Siafast Diamond Disc 5in 120 grit

Bona Diamond Sandpaper – Precision Abrasive for Ultra-Smooth Hardwood Floor Finishing

When your project calls for flawless fine sanding and final surface preparation, Bona Diamond Sandpaper delivers unmatched performance. Engineered with advanced diamond abrasive technology, Bona Diamond is specifically designed for use in the final sanding stages—ensuring a super-smooth surface ready for staining, sealing, or recoating.

Perfect for waterborne finishes, oil-based systems, and even delicate species, Bona Diamond reduces grain raise, evens out surface imperfections, and provides an ultra-consistent scratch pattern—helping you achieve professional, swirl-free results.

Why Choose Bona Diamond Sandpaper?

• Diamond Abrasive Technology
  Delivers ultra-fine, uniform scratch pattern—ideal for final prep and between-coat abrasion.

• Reduces Grain Raise
  Excellent for use before waterborne finishes, helping to minimize post-coat roughness and reduce additional sanding.

• Superior Finish Clarity
  Helps promote optimal finish adhesion and reduces swirl marks, haze, and uneven sheen.

• Long-Lasting Performance
  Outlasts conventional fine-grit abrasives—maintains cutting power over large floor areas.

• Excellent for All Wood Types
  Gentle enough for soft species, strong enough to refine exotics and dense hardwoods.

Product Details:

• Formats:

  • Mesh discs for multi-head sanders, buffers, and orbital machines

  • Hook & loop backing for fast disc changes

• Grain: Industrial diamond abrasive

• Backing: Open mesh—maximizes dust extraction and minimizes clogging

Perfect For:

• Final sanding on raw hardwood before staining or sealing

• Between-coat abrasion on water-based and oil-based finishes

• Screen & recoat prep where surface clarity is critical

• High-end residential floors, commercial projects, and gymnasiums

• Use on soft and exotic hardwood species

Pro Tip:

Use Bona Diamond Sandpaper as your last abrasive before applying stain or waterborne finish to ensure smooth, consistent color and eliminate surface imperfections that could affect final appearance. It’s also ideal for preparing cured finishes during screen & recoat work—leaving a clean bonding surface for superior adhesion.

Bona Diamond Sandpaper offers floor sanding professionals precision performance and superior finish prep, making it the go-to choice for achieving the flawless results today’s high-end finishes demand.