: Not to mention the glass fibers that will be in your skin for days
: unless you were a full body suit and throw away the clothes afterwards.

This may sound a bit extreme, but it is probably good advice if you are doing a lot of sanding where you'll be throwing a spray of glass fibers into the air. Fortunately, you can save a lot of money on replacement clothes by buying (and wearing) disposable a Tyvek jumpsuit or overalls.

The local Home Depot sells them at a reasonable price (somewhere under $10), but they stock them in an unusual location: the rental tools department. I guess they figure that if you want to rent a powerwasher, or a spray gun you'll also need something to wear. They should be fairly easy to find at any large homecenter or hardware store.

One tip I can pass along about these: The sleeve and pant legs are fairly loose around the cuffs, allowing a lot of debris to intrude in these areas. To reduce that, tape the cuffs tightly shut with a few strips of duct tape or masking tape, wrapping the tape around the end of the garment, and onto your wrist, ankle or boot top.

A respirator is obviously a first thought. No sense in keeping the dust off your clothes but allowing it to get into your lungs.

PGJ