Sandblasting is useful when you need to strip material off a hard surface. Common reasons to sandblast are to remove paint, rust, or get a surface ready for a new material. You aren’t limited to surfaces like walls either—you can sandblast rusted tools, bicycle frames, cement, bricks, and many others. If what you’re sandblasting is still structurally sound, sandblasting can be a fast and inexpensive way to revive the original material. 

Yes, many professionals use dustless or water-based blasting methods for reduced environmental impact.

Sanding and pressure washing serve different purposes in deck maintenance, so one is not necessarily better than the other. Pressure washing is ideal for annual cleaning to remove dirt, grime, mold, and mildew. Sanding is a deeper restoration method used to smooth rough surfaces, remove an old finish, and prepare the wood for a new coat of stain or paint. The ideal process for refinishing a deck is to first clean it (with a power washer), then sand it, and finally apply the new stain or finish. While cleaning should be done annually, sanding and staining are typically needed only every one to three years.

The disadvantages of sandblasting are noise, mess, and risk. Sandblasters are louder than chainsaws and spread debris on the ground and through the air. Let your neighbors know that you're sandblasting so they can prepare. Sandblasting can damage your property if not done properly, so thoroughly vet any pros you talk to before hiring.