1x6 Massaranduba Shiplap Soffit board profile diagram
Soffit

1x6 Massaranduba Shiplap Soffit

This 1x6 Massaranduba soffit board (Shiplap profile) combines the rich grain of Massaranduba (Brazilian Redwood) with 3,190 Janka hardness, making it ideal for exposed eave linings and covered ceilings that endure for decades. The overlapping shiplap profile sheds water naturally and creates a classic, weather-resistant look for eave linings, ceilings, and covered areas. In stock and ships nationwide — order 1x6 Massaranduba soffit boards online or call 1-844-674-4455 for expert guidance.

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

Configure Your Order

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

Durable, Moisture-Resistant, and Visually Appealing

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:2.01 lbs/LF
1' board:2.0 lbs

1x6 Massaranduba Shiplap Soffit — Complete Guide

Everything you need to know about shiplap massaranduba soffit

About 1x6 Massaranduba Shiplap Soffit

Massaranduba lumber, with its strong dimensional stability and impressive durability, is an ideal choice for soffit applications. This species of wood excels in areas exposed to moisture, resisting warping and degradation over time. The shiplap profile of Massaranduba provides clean lines and a polished look while allowing adequate ventilation for the space it covers. This makes it not only aesthetically pleasing but functionally superior in maintaining the integrity and performance of exterior structures.

  • Exceptional dimensional stability under varying humidity levels
  • High durability rating makes it resistant to impacts and wear
  • Moisture-resistant properties ensure longevity even in wet conditions

Key Benefits

Moisture Resistance

Massaranduba's composition makes it naturally resistant to moisture and humidity, making it suitable for outdoor applications like soffits.

Sustainability

Sourced from sustainable regions in South America, Massaranduba offers an environmentally responsible option for construction.

Aesthetic Appeal

The rich, warm colors and fine grain patterns create a stunning appearance that enhances any exterior.

Technical Specifications

Janka Hardness

3190

Density

68 lbs/ft³

Durability Rating

Very Durable

Dimensional Stability

Excellent due to low shrinkage and swelling characteristics

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper ventilation in the soffit space to prolong wood life
  • Use corrosion-resistant fasteners to prevent rust
  • Leave appropriate expansion gaps between boards to allow for natural wood movement

Recommended Tools:

Power saw
Drill
Measuring tape
Level

Maintenance & Care

Cleaning

Regularly clean the surface with a mild detergent and a soft brush to remove dirt and debris. Rinse thoroughly and allow to dry.

Finishing

Apply an exterior-grade sealant or stain to enhance wood longevity and protect against weathering.

Weathering

Over time, unsealed Massaranduba can develop a beautiful silver patina when exposed to the elements, but maintenance of finishes can help retain original color.

1x6 Massaranduba Shiplap Soffit — 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 soffit 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 soffit 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 soffit 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 soffit 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 Shiplap Soffit — 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 Soffit?

Massaranduba soffit and porch ceiling boards create a warm, premium overhead aesthetic that vinyl and aluminum simply cannot replicate. The natural grain pattern adds architectural character to any covered outdoor space. Properly installed 1x6 Massaranduba soffit 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 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.

1x6 Massaranduba Soffit — 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 soffit 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 Soffit — Frequently Asked Questions

1x6 Massaranduba soffit 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 1x6 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.

1x6 Massaranduba soffit pricing varies by profile, grade, and board length. 1x6 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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