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1x2 Massaranduba Tongue & Groove Siding board profile diagram
Siding

1x2 Massaranduba Tongue & Groove Siding

This 1x2 Massaranduba Tongue & Groove siding board offers unmatched exterior cladding longevity, backed by Massaranduba's 3,190 Janka hardness and a natural lifespan of up to 50+ years. The interlocking tongue and groove profile creates tight, seamless joints for exterior cladding and accent walls, with no visible fasteners on the finished surface. In stock and ships nationwide — order Massaranduba siding online or call 1-844-674-4455 for expert guidance.

1 x 2(0.75"×1.5" actual)[19.0mm × 38.1mm]
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Ships Nationwide
SKU: MASS-1X2-TG-SB-L1

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

Explore the Ideal Choice for Exterior Applications

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:0.55 lbs/LF
1' board:0.6 lbs

1x2 Massaranduba Tongue & Groove Siding — Complete Guide

Everything you need to know about t&g massaranduba siding

About 1x2 Massaranduba Tongue & Groove Siding

Massaranduba is a highly sought-after hardwood for outdoor siding and cladding applications, credited for its remarkable durability and aesthetic qualities. Known for its dimensional stability and excellent weather resistance, it is an ideal material for constructing exteriors that withstand the test of time. The tongue-groove profile not only enhances the visual appeal by providing clean, continuous lines but also plays a crucial role in effective water drainage, minimizing moisture accumulation, thus prolonging the lifespan of the structure.

  • Excellent dimensional stability
  • Inherent resistance to weather-related deterioration
  • Visually appealing tongue-groove profile for seamless installations
  • Ideal for high-end residential and commercial applications

Key Benefits

Durability

Massaranduba is classified as Class 1 durable, making it one of the strongest woods for exterior usage, resistant to rot and insect damage.

Aesthetic Versatility

The tongue-groove profile offers a clean, polished look while allowing for shadow lines that create visual interest throughout the cladding surface.

Low Maintenance

Requires minimal upkeep due to its natural properties, making it a cost-effective choice over time as it resists fading and weathering.

Technical Specifications

Janka Hardness

3190

Density

68 lbs/ft³

Durability Rating

Class 1 (very durable)

Dimensional Stability

Extremely stable; minimal movement with temperature and humidity changes

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper spacing for expansion and contraction due to temperature changes.
  • Use high-quality, corrosion-resistant screws or nails for fastening.
  • Maintain a ventilated environment to allow for water drainage.

Recommended Tools:

Saw for precise cuts
Drill for fastening
Level for alignment

Maintenance & Care

Cleaning

Regularly clean with mild soap and water to maintain appearance and prevent build-up of dirt or mildew.

Finishing

Apply a UV-absorbing sealant to enhance the natural color and protect against weathering.

Weathering

Massaranduba naturally weathers to a silver-gray hue when left unfinished; periodic maintenance can enhance longevity and aesthetic appeal.

Frequently Asked Questions

A 1x2 Massaranduba board weighs approximately 0.55 lbs per linear foot. Massaranduba has a density of about 65 lbs/ft³, making it one of the densest commercially available hardwoods. Always factor weight into your structural and shipping calculations.

Yes — Massaranduba is rated Durability Class 1 (Very Durable) and is naturally resistant to rot, decay, insects, and fungal attack without chemical treatment. It is naturally durable and performs exceptionally well in full exterior exposure including siding applications. While ground contact is possible, we recommend elevating Massaranduba boards at least 6" above grade for maximum lifespan.

Massaranduba 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 costs less over its much longer lifetime. Composites do offer lower upfront maintenance.

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 1x2 Massaranduba board has actual finished dimensions of 0.75" × 1.5" (19.0 x 38.1 mm). The "1x2" 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" × 1.5") 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.

Related Guides & Resources

Understanding Tongue-and-Groove SidingBest Practices for Siding InstallationMassaranduba vs. Other Hardwoods

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

1 x 2 Massaranduba Tongue & Groove Siding — 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.

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 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 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 1 x 2 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.

Janka Hardness

3,190 lbf

Service Life

50+ years

Durability

Very Durable

Fire Rating

Class A

1 x 2 Massaranduba Siding — Frequently Asked Questions

Massaranduba siding 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.

1 x 2 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.

Massaranduba siding pricing varies by size, profile, grade, and board length. 1 x 2 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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