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1x3 Massaranduba Shiplap Siding board profile diagram
Siding

1x3 Massaranduba Shiplap Siding

This 1x3 Massaranduba Shiplap 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 overlapping shiplap profile sheds water naturally and creates a classic, weather-resistant look for exterior cladding and accent walls. In stock and ships nationwide — order Massaranduba siding online or call 1-844-674-4455 for expert guidance.

1 x 3(0.75"×2.5" actual)[19.0mm × 63.5mm]
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Ships Nationwide
SKU: MASS-1X3-SHIP-SB-L1

Configure Your Order

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

Durable, Aesthetic, and Weather-Resistant Solution

Shiplap

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:0.91 lbs/LF
1' board:0.9 lbs

1x3 Massaranduba Shiplap Siding — Complete Guide

Everything you need to know about shiplap massaranduba siding

About 1x3 Massaranduba Shiplap Siding

Massaranduba lumber, particularly in a shiplap profile, is an exceptional choice for exterior siding and cladding applications due to its inherent properties that cater to environmental challenges. This hardwood boasts remarkable dimensional stability and robust weather resistance, ensuring longevity and integrity in various climatic conditions. The shiplap profile enhances the visual appeal with its overlapping edges which not only facilitate water shedding but also become a focal point through defined shadow lines. Furthermore, the installation orientation allows for versatile patterns that can elevate the overall aesthetics of residential or commercial structures.

  • Exceptional weather resistance, ideal for exterior use
  • Dimensional stability reduces warping and movement
  • Aesthetic appeal with clean lines and shadow effects
  • Shiplap profile enhances water drainage and ventilation

Key Benefits

Weather Resistance

Massaranduba's natural oils provide excellent resistance to moisture, preventing rot and decay in wet conditions.

Technical Specifications

Janka Hardness

3190

Density

68 lbs/ft³

Durability Rating

Highly durable and resistant to decay

Dimensional Stability

High stability with minimal movement over time

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper expansion gaps between boards to allow for movement
  • Use stainless steel or galvanized fasteners to avoid corrosion
  • Consider a rainscreen system for optimal ventilation and moisture control

Recommended Tools:

Pneumatic nail gun
Circular saw
Measuring tape
Level

Maintenance & Care

Cleaning

Regularly clean with mild soap and water to remove dirt and grime.

Finishing

Reapply protective sealants every few years to maintain appearance and enhance longevity.

Weathering

Color may deepen with exposure but will not significantly fade, adding to the wood's character.

Frequently Asked Questions

A 1x3 Massaranduba board weighs approximately 0.91 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 1x3 Massaranduba board has actual finished dimensions of 0.75" × 2.5" (19.0 x 63.5 mm). The "1x3" 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" × 2.5") 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

Alternative Siding Option

This same Massaranduba 1 x 3 is also available in a different siding profile:

Rainscreen

Designed for rainscreen clip systems with ventilation gap

1 x 3 Massaranduba Shiplap 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 3 shiplap profile creates an overlapping joint with a distinctive shadow line between boards. Popular for siding, accent walls, and architectural cladding applications. 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 3 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.

Use 305 or 316 stainless steel screws for all Massaranduba installations — never use galvanized or coated deck screws, which will corrode and stain the wood. Pre-drill every hole using a countersink bit sized for your screw. For 1 x 3 boards, place screws approximately 1" from each edge and 3/4" from board ends. A combination drill/driver with a clutch setting prevents over-driving into this extremely hard wood.

Massaranduba siding pricing varies by size, profile, grade, and board length. 1 x 3 Shiplap 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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