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 5/4x4 Ipe Wood for Your Outdoor Flooring?
Ipe outdoor flooring is ideal for covered porches, screened-in rooms, and breezeway floors where a refined, interior-quality finish is needed in a weather-resistant package. Properly installed 5/4x4 Ipe outdoor flooring 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 5/4x4 tongue & groove (T&G) profile features interlocking edges that create a seamless, flush surface with no visible gaps. Ideal for porch ceilings, soffit installations, and covered porch floors. 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.
5/4x4 Ipe Outdoor Flooring — Installation & Coverage Specs
- Recommended joist spacing: 16"–24" on center for 5/4x4 boards (1" actual thickness)
- Fastener placement: Secure per profile requirements, one fastener per joist minimum
- Board weight: A 12-foot 5/4x4 Ipe board weighs approximately 20 lbs (1.68 lbs/LF)
- Coverage: Each 12-foot 5/4x4 board covers 3.5 sq ft of outdoor flooring surface (3.5" face width)
- Pre-drilling required: Always pre-drill in Ipe — the 3,680 lbf hardness prevents direct screwing
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