1x6 Massaranduba Tongue & Groove Decking board profile diagram
Decking

1x6 Massaranduba Tongue & Groove Decking

This 1x6 Massaranduba decking board (Tongue & Groove profile) pairs the proven outdoor performance of Massaranduba (Brazilian Redwood) with a 3,190 Janka hardness rating — one of the hardest commercially available woods on earth. The interlocking tongue and groove profile creates tight, seamless joints for exterior decks, patios, and pool surrounds, with no visible fasteners on the finished surface. In stock and ships nationwide — order 1x6 Massaranduba decking boards online or call 1-844-674-4455 for expert guidance.

1 x 6(0.75"×5.5" actual)[19.0mm × 139.7mm]
Contractor Trusted
Expert Backed
Ships Nationwide
SKU: MASS-1X6-TG-SB-L1

Configure Your Order

Select profile, grade, and length below to see live pricing

Premium Tongue-Groove Profile 1x6 Deck Boards

T&G

Select and Better is our standard grade

Length Guide

Available lengths: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22′

Estimated Shipping Weight
Weight per linear foot:2.01 lbs/LF
1' board:2.0 lbs

1x6 Massaranduba T&G Decking — Complete Guide

Everything you need to know about t&g massaranduba decking

About 1x6 Massaranduba Tongue & Groove Decking

Massaranduba lumber, particularly in a tongue-groove profile and 1x6 size, is a premier choice for decking applications due to its remarkable strength, durability, and weather resistance. Known for its ability to withstand the elements, Massaranduba is perfect for outdoor use. The tongue-groove profile not only enhances the appearance but also simplifies installation by providing a secure interlocking connection that minimizes lateral movement and gaps.

  • Exceptional strength and durability
  • High resistance to moisture and decay
  • Beautiful finish with minimal gaps in installation
  • Ideal for both residential and commercial applications

Key Benefits

Strength and Durability

Massaranduba lumber is significantly harder than many domestic woods, offering unparalleled resilience against impact and wear over time.

Rot and Insect Resistance

This species has a natural resistance to rot and insects, ensuring longevity in any decking application without extensive maintenance.

Aesthetic Appeal

The rich color variations and grain patterns of Massaranduba enhance any outdoor space, providing a premium look that endures.

Technical Specifications

Janka Hardness

3190

Density

68 lbs/ft³

Durability Rating

Class 1 (very durable)

Dimensional Stability

Superior, with minimal shrinkage and expansion

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper joist spacing to maintain structural integrity
  • Use stainless steel fasteners to prevent corrosion
  • Leave adequate gap for expansion based on climatic conditions

Recommended Tools:

Power drill
Miter saw
Level

Maintenance & Care

Cleaning

Regular cleaning with a gentle soap solution and a soft brush will maintain the surface appearance. Avoid using harsh chemicals or power washing at high pressures.

Finishing

Consider applying a penetrating oil-based finish to enhance color and protect against UV rays after installation, and annually thereafter.

Weathering

Massaranduba will naturally weather to a silver-gray patina if left untreated; periodic oiling can maintain its rich color.

1x6 Massaranduba Tongue & Groove Decking — Frequently Asked Questions

A 1x6 Massaranduba board weighs approximately 2.01 lbs per linear foot. Massaranduba has a density of about 69 lbs/ft³, making it one of the densest commercially available hardwoods. A 12-foot 1x6 Massaranduba board weighs approximately 24 lbs. Always factor weight into your structural and shipping calculations.

1x6 Massaranduba decking has an expected service life of up to 50+ years when properly installed. This is 3-5× longer than pressure-treated pine and 2-3× longer than cedar. Massaranduba achieves this exceptional longevity through its 3,190 Janka hardness and Class 1 durability rating, providing built-in resistance to rot, decay, insects, and fungal growth without chemical preservatives.

1x6 Massaranduba decking pricing varies by profile, grade, and board length. Select and Better grade boards typically range from $4-$12 per linear foot before shipping. While the upfront cost is higher than pressure-treated lumber, Massaranduba's up to 50+-year service life makes the lifetime cost per year significantly lower. Use the configurator above for exact pricing, or request a custom quote for large orders.

Yes — 1x6 Massaranduba wood decking outperforms composite in hardness (3,190 vs ~200 Janka), lifespan (up to 50+ years vs 25-30 years), and heat resistance. Unlike composites, Massaranduba won't melt, warp in extreme heat, or fade significantly. While initial cost is similar ($8-15/LF installed), Massaranduba wood decking costs less over its much longer lifetime. Composites do offer lower upfront maintenance, but Massaranduba's natural beauty and durability make it the superior long-term investment.

Massaranduba is widely considered one of the best woods for 1x6 decking boards. With a 3,190 Janka hardness rating, Class A fire-rated certification, and up to 50+-year lifespan, Massaranduba (Brazilian Redwood) outperforms nearly every other commercially available wood species. Other excellent options include Cumaru (Brazilian Teak) and Massaranduba (Brazilian Redwood), but Massaranduba remains the industry benchmark for premium outdoor hardwood applications.

Massaranduba requires minimal maintenance. Without treatment, it naturally weathers to an elegant silver-gray patina over 6-12 months. To maintain the original warm brown color, apply a UV-inhibiting penetrating oil (like Ipe Oil or Penofin) once or twice annually. Cleaning involves periodic washing with a mild soap solution. No sanding, staining, or sealing is required for structural durability.

Massaranduba is DIY-friendly with proper preparation. Key requirements: (1) Always pre-drill all screw holes — Massaranduba is too hard for direct screwing. (2) Use only 305 or 316 stainless steel fasteners — standard hardware will corrode and stain. (3) Face-screw with stainless steel trim-head screws. (4) Allow boards to acclimate on-site for 5-7 days before installation. A compound miter saw with a carbide-tipped blade is recommended.

A nominal 1x6 Massaranduba board has actual finished dimensions of 0.75" × 5.5" (19.0 x 139.7 mm). The "1x6" is the nominal (rough-cut) size — after kiln drying and precision surfacing, all hardwood lumber finishes slightly smaller. This is standard across the lumber industry, similar to how a nominal 2×4 softwood measures 1.5" × 3.5". Always use the actual dimensions (0.75" × 5.5") when calculating material quantities and coverage for your project.

We responsibly, legally, and ethically source all our Massaranduba. We work only with suppliers who follow responsible forestry practices with full chain-of-custody transparency. Note: We are not FSC certified. Massaranduba trees grow naturally in diverse tropical forests and regenerate well under managed harvest. The extremely long lifespan (up to 50+ years) means fewer replacements compared to softwood or composite alternatives, reducing long-term environmental impact.

Shipping & Delivery

Nationwide delivery: We ship to all 50 states via LTL freight, flatbed, or terminal pickup

Typical lead time: 5-10 business days for standard orders (custom milling may add 2-3 weeks)

Shipping estimate: Final freight cost calculated at checkout based on your location and order size

Rush service available: Contact us for expedited milling and shipping options

1x6 Massaranduba Tongue & Groove Decking — Complete Buyer's Guide

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 Deck?

Massaranduba 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 1x6 Massaranduba decking 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 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 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 Decking — 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 decking surface (5.5" face width)
  • Pre-drilling required: Always pre-drill in Massaranduba — the 3,190 lbf hardness prevents direct screwing

Janka Hardness

3,190 lbf

Service Life

50+ years

Durability

Very Durable

Fire Rating

Class A

1x6 Massaranduba Decking — Frequently Asked Questions

1x6 Massaranduba decking has an expected service life of 50+ years when properly installed and maintained. This is 3-5x longer than pressure-treated pine and 2-3x longer than cedar. Massaranduba achieves this exceptional longevity through its natural density (Janka hardness: 3,190 lbf) and Class 1 durability rating, which provide built-in resistance to rot, decay, insects, and fungal growth — all without chemical preservatives.

1x6 tongue & groove Massaranduba boards interlock via a milled tongue on one edge and a corresponding groove on the other. Secure each board by blind-nailing through the tongue at a 45° angle using stainless steel ring-shank nails or by face-screwing with countersunk stainless steel screws. Always pre-drill holes in Massaranduba to prevent splitting. T&G Massaranduba should only be used in covered or semi-protected areas.

1x6 Massaranduba decking pricing varies by profile, grade, and board length. 1x6 Tongue & Groove boards in Select and Better grade typically range from $4-$12 per linear foot before shipping. While the upfront cost is higher than pressure-treated lumber, Massaranduba's 50+ years service life makes the lifetime cost per year significantly lower. Use our online configurator above to see exact pricing for your selected options, or request a custom quote for large orders.

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