Here's Why: Perforation - Joest products have holes throughout the surface
that allow the dust to easily escape, and Eliminate Load-up.
Because you won't have dust particles clogging up your disc, you can now see the full potential abrasive life of the disc. Perforation allows the sheet to last longer and provide a higher level of finish. Dust is
extracted through the perforations in a congestion-free-flow - not just at the edges of the sander, but over the entire surface!
Fiber Backing - Joest abrasive drywall sanding sheets utilize a Non-Woven backing that draws the dust through the portholes evenly. Not
only is the backing a nice additional cushion, but it drastically improves the performance and life of the sanding disc. Even distribution of sanded drywall material means you can Eliminate Sand Scratches!
Aluminum Oxide Grit- Traditional drywall sandpaper uses sharp edged silicon carbide abrasive that starts out cutting hard, but doesn't
wear evenly. Joest Drywall Sanding Discs utilize Aluminum Oxide grit
that is rounded (instead of jagged), and wears uniformly. Joest products
will cut at the same rate throughout their usable life, and will
resist loading.
