Massaranduba, also known as Brazilian Redwood, is a premium tropical hardwood sourced from Northern South America (Brazil, Suriname, Venezuela). With a Janka hardness rating of 3,190 lbf and a density of 68 lbs/ft³, Massaranduba is classified as Class 1 - Very Durable — one of the most durable commercial lumber species available. The heartwood exhibits deep red to reddish-brown with straight to interlocked grain, fine to medium texture, creating a striking natural appearance that improves with age.
Why Choose 1x6 Massaranduba Wood for Your Siding?
As exterior cladding, Massaranduba siding provides a weather-tight barrier with exceptional impact resistance. The dense grain resists dents, hail damage, and woodpecker damage far better than cedar, pine, or fiber cement alternatives. Properly installed 1x6 Massaranduba siding delivers a service life of 50+ years with minimal maintenance — an optional annual oil treatment preserves the original color, or you can let the Massaranduba wood weather to a distinguished silver-gray patina. Massaranduba carries a Class A - Low flame spread, making it suitable for wildfire-prone regions where code-compliant materials are required.
The 1x6 profile is precision-milled to tight tolerances and available in Select and Better grade, ensuring consistent quality across your entire project. All Massaranduba lumber is available in Select and Better grade with lengths ranging from 4′ to 20′. For detailed step-by-step instructions, consult our Massaranduba installation guide. Long-term care recommendations are covered in our Massaranduba maintenance guide.
1x6 Massaranduba Siding — Installation & Coverage Specs
- Recommended joist spacing: 16" on center for 1x6 boards (0.75" actual thickness)
- Fastener placement: Secure per profile requirements, one fastener per joist minimum
- Board weight: A 12-foot 1x6 Massaranduba board weighs approximately 24 lbs (1.98 lbs/LF)
- Coverage: Each 12-foot 1x6 board covers 5.5 sq ft of siding surface (5.5" face width)
- Pre-drilling required: Always pre-drill in Massaranduba — the 3,190 lbf hardness prevents direct screwing
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