OKA WOOD PLANK
Ipe 5/4×4
Brazilian Hardwood · FSC Certified

Ipe 5/4×4 Tropical Hardwood

Dimension 1" × 3-1/2"

$4.99per linear foot
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Ipe Tropical Hardwood (pronounced ee-pay) is one of the densest woods available for outdoor construction. It is so dense it sinks in water, holds the same fire rating as concrete and steel, and is naturally mildew and decay resistant.

Its natural oils make Ipe 5/4×4 virtually impenetrable to insects. It does not scratch or splinter easily, never becomes hot in the sun, and has a high friction coefficient, ideal for decks, docks and seaside construction.

1

Select a length to estimate subtotal. Sold per linear foot.

Density68 lb/ft³
Lifespan25+ yrs
FSC CertifiedSustainable
Why Ipe 5/4×4

Ipe Tropical Hardwood is always the #1 best choice for your projects.

Strong and Durable
Low Maintenance
Natural Look
Long Life Span
Sustainably Sourced
Boosts your Property Value
Complete the build

Recommended accessories

Curated fastening systems engineered for Ipe 5/4×4 density and outdoor performance.

Starborn PRO PLUG SYSTEM Fascia
Ipe 5/4×4 / 100 Pack

Starborn PRO PLUG SYSTEM Fascia

Color-matched Ipe wood plugs with stainless screws for a flush, fastener-free fascia finish.

$74.95
Phantom Universal Hidden Fasteners
90 Count

Phantom Universal Hidden Fasteners

Stainless hidden fastening system for a clean, screw-free deck surface.

$89.50
Description

Ipe 5/4×4 Dimensional Lumber

Appearance. The color of Ipe is similar to walnut, with dark tones that have olive brown to reddish undertones. Left untreated, it gradually turns into a beautiful natural silver patina.

Maintenance. Ipe does not scratch or splinter easily and maintains structural integrity for over 25 years. To preserve its rich auburn tone, oil annually depending on climate and sun exposure. Without oiling, it weathers to a refined silver patina.

Preservation. Ipe requires no special treatment and lasts for over 40 years without maintenance. A deck oil with UV inhibitors is an excellent option to retain its original color.

Sustainable. The Forest Legality Initiative states Ipe can be exported and traded internationally. It is not listed as an endangered species by the IUCN Red List.

OKA WOOD PLANK meets high standards for social, economic and environmental responsibility. We monitor and document the chain of custody of all our hardwoods. We are Lacey Act compliant, IBAMA certified, and provide FSC certified options.

Other Names: Brazilian Walnut, Lapacho, Iron Wood, Amapa, Cortez, Guayacan, Flor Amarillo, Greenheart, Pau D'Arco, Yellow Poui.
Verified Reviews

What clients say about Ipe 5/4×4

4.9 / 5

Based on 218 verified reviews

Project by Daniel R.
Verified buyer

Best decking we have ever specified

We used this on a 4,200 sqft oceanfront deck. The density and color consistency were exceptional. Survived a full hurricane season with zero damage.

Daniel R.

Architect · Miami, FL · March 2026

Project by Sarah M.
Verified buyer

Worth every penny

OKA WOOD PLANK walked us through grade selection and length optimization. We cut waste by 18 percent vs our previous supplier. Wood arrived in 6 days.

Sarah M.

Homeowner · Aspen, CO · February 2026

Project by Carlos V.
Verified buyer

Pre-drilled cleanly, no splintering

Hardest wood I have ever installed and the most rewarding. The Phantom hidden fasteners they recommended saved us 2 days of labor.

Carlos V.

Builder · Hamptons, NY · January 2026

FAQ

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Orders under 500 lf ship via LTL freight in 3-7 business days. Larger orders go on dedicated trucks in 7-12 business days. White Glove residential delivery available in all 50 states.