About
The SIA 7990 SIAsponge Sanding Block is a convenient, high-performance sanding tool designed for fast, efficient surface preparation and finishing. Coated on all four sides and made from dense PU foam, it offers excellent edge stability, making it ideal for use on flat surfaces, inside rebates, and along edges.
Thanks to its durable aluminium oxide grit and low-clogging design, this sanding block delivers consistent results across a wide range of materials including wood, plastics, paints, lacquers, and composites. It’s colour-coded for easy grit identification and can be used for both wet and dry sanding – making it a versatile addition to any workshop or DIY kit.
Dimensions
- Block size: 68mm x 97mm x 27mm
Features
- Ready-to-use sanding block for quick and efficient work
- Coated on all four sides for versatile sanding angles
- High edge stability for precision on flat and detailed areas
- Colour-coded for easy grit identification
- Low clogging for cleaner, more consistent results
- Suitable for wet and dry applications
- Long-lasting PU foam backing with elastic binder bonding
- Mechanical coating for reliable grit adhesion
Applications
- Sanding off old paint, varnish, and stains
- Removing raised wood fibres
- Flatting and keying uneven or smoothed surfaces
- Preparing surfaces for better paint adhesion
- Rust removal and fine surface sanding
Suitable Materials
- Hardwood & Softwood
- Old paint & lacquer
- Primer filler
- Melamine sheet
- NC, PU, Polyester & UV lacquers
- Putty
- Plastics & solid surface material
- Plaster & drywall lining boards
- Water-based varnish
Finish
- Grit type: Aluminium oxide
- Backing: Hard PU foam
- Coating: Mechanical
- Bonding: Elastic binder
Notes
- Reusable and durable for multiple sanding tasks
- Compact and ergonomic – ideal for hand-sanding tight or shaped areas
