If needed, bamboo flooring can be fully re-sanded and finished about three times as any other species
A typical floor sanding involves using a special (drum) floor sander, edger, and a buffer/ polisher with a disc attachment for holding sand paper and buffing pads. The sanding procedure starts with a course of medium grit sand paper. After sanding the entire floor, repeat with a medium grit and complete sanding with a fine grit sand paper. This produces a fine surface and is ready for finishing.
However, because bamboo is a grass it tends to get “fuzzy”, “burns” or heats-up faster during sanding. Using a medium grit paper, approach sanding at a slight angle to the grain direction then graduating down to fine course, similar to sanding soft yellow Pine.
In most cases, a full sanding is usually not required, just a “buff & re-coat” or “screening & re-coating”. Buff & re-coat is light sanding using an industrial type buffer that removes surface scratches, cleans, and prepares the floor for new top finishes. This procedure really depends how the floor was used or abused. In general, high traffic areas; kitchen-dinette would need to be re-coated sooner than a bedroom or formal dining room. If your floors have been treated with any “non-hardwood friendly products” such as; waxes or has heavy wear patterns, or has lots of dents, then it would need to be fully refinished (Sand & Finish).
The techniques of sanding and finishing bamboo do require higher skills and are best left to professionals.
Here is the Suggested Sequence for bamboo sanding
First Cut: 60 grit paper at a 7-15 degree angle with the grain
Second Cut: 80 grit straight with the grain
Third Cut: 100 or 120 grit (CHANGE SAND PAPER OFTEN)
Suggested Sequence for bamboo Screening
First Screen: 100 or 120 grit
Second Screen: 150 grit
FINISHING: All surface finishes have been used successfully with bamboo. Darker colors will tend to show overlap marks. (NWFA) National Wood Flooring Association
Answered on 3/21/2013 by Tech & Install