Ipe, also known as Brazilian Walnut, is a premium tropical hardwood sourced from Central and South America (Brazil, Bolivia, Peru). With a Janka hardness rating of 3,680 lbf and a density of 69 lbs/ft³, Ipe is classified as Class 1 - Very Durable (Up to 75+ Years) — one of the most durable commercial lumber species available. The heartwood exhibits rich brown to olive-brown, darkening to reddish-brown with age with interlocked to irregular grain, fine to medium texture, creating a striking natural appearance that improves with age.
Why Choose 1x4 Ipe Wood for Your Deck?
Ipe decking delivers a naturally slip-resistant, splinter-free surface that stays cool underfoot even in direct sunlight. Unlike composite or pressure-treated alternatives, it never fades to a dull gray unless you want the natural silver patina look. Properly installed 1x4 Ipe decking delivers a service life of 75+ years with minimal maintenance — an optional annual oil treatment preserves the original color, or you can let the Ipe wood weather to a distinguished silver-gray patina. Ipe carries a Class A (0-25 flame spread), making it suitable for wildfire-prone regions where code-compliant materials are required.
The 1x4 eased-edge (E4E) profile features gently rounded edges on all four sides, reducing the risk of splinters and creating a comfortable walking surface. This is the most versatile profile — suitable for face-screw installation with countersunk stainless steel fasteners. All Ipe lumber is available in Select and Better grade with lengths ranging from 4′ to 20′. For detailed step-by-step instructions, consult our Ipe installation guide. Long-term care recommendations are covered in our Ipe maintenance guide.
1x4 Ipe Decking — Installation & Coverage Specs
- Recommended joist spacing: 16" on center for 1x4 boards (0.75" actual thickness)
- Fastener placement: Face-screw with two stainless steel screws per joist, approximately 1" from each edge of the 3.5" face
- Board weight: A 12-foot 1x4 Ipe board weighs approximately 15 lbs (1.26 lbs/LF)
- Coverage: Each 12-foot 1x4 board covers 3.5 sq ft of decking surface (3.5" face width)
- Pre-drilling required: Always pre-drill in Ipe — the 3,680 lbf hardness prevents direct screwing