.gb-wrap{max-width:100%;font-size:15px;line-height:1.6} .gb-wrap h2{font-size:1.25rem;margin:0 0 .6em} .gb-intro p{margin:0 0 .9em} .gb-acc{border-top:1px solid #ddd;padding:.65em 0} .gb-acc:last-of-type{border-bottom:1px solid #ddd} .gb-acc>summary{cursor:pointer;font-weight:600;list-style:none;padding:.2em 0} .gb-acc>summary::-webkit-details-marker{display:none} .gb-acc>summary::after{content:"+";float:right;font-weight:400} .gb-acc[open]>summary::after{content:"\2013"} .gb-acc .gb-body{padding:.4em 0 .9em} .gb-wrap ul{margin:0 0 .9em 1.1em;padding:0} .gb-wrap li{margin:.25em 0} IPE 5/4 x 6 Hardwood Decking Brazilian Ipe is one of the hardest, densest decking woods available – naturally resistant to rot, insects, fire, and UV damage, with a lifespan of 50+ years. S4S E4E (square edge) boards face-screw for stairs and the deck perimeter; grooved boards take a hidden fastener for a clean field. Specifications Actual board size 1 in. x 5.5 in. (5/4 x 6 nominal) Stocked in Vancouver, 16 ft. lengths only About 2.6 lb per linear foot – approx. 42 lb per 16 ft. board Janka hardness: 3,680 lbf Class A fire rating FSC, MTCC, Indonesian Legal Wood & Sustainable Northwest certified 25-Year Limited Warranty against rot Profiles: S4S E4E (square edge) or Grooved (hidden fastener) Questions S4S E4E or grooved - which do I need?Grooved boards run the main deck field with a hidden fastener for a clean, screw-free surface. S4S E4E (square edge) is face-screwed and used for stairs and the outer perimeter, where a hidden clip has nothing to grip. Does Ipe need staining or sealing?No stain is required for protection – Ipe is naturally rot- and insect-resistant. Left unfinished, it will weather to a silver-gray patina; periodic oiling maintains the rich brown tone. What lengths are available?This listing is stocked in 16 ft. lengths only.