Ipe

Ipe is one of the hardest, densest woods you can buy: an olive to dark brown South American hardwood with a fine, tight grain. It's naturally resistant to rot, insects and weather, so it's widely used for decking, outdoor furniture, benches and anything that lives outside. It's tough on tools, so use sharp carbide and pre-drill for fasteners. We carry it in 4/4, sold by the board foot.