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Siding

1x6 Jatoba Tongue & Groove Siding

This 1x6 Jatoba siding board (Tongue & Groove profile) offers unmatched exterior cladding longevity, backed by Jatoba's 2,350 Janka hardness and a natural lifespan of up to 40+ 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 1x6 Jatoba siding 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: JATO-1X6-TG-SB-L1

Configure Your Order

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

Architectural grade 1x6 cladding for high-performance 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:2.01 lbs/LF
1' board:2.0 lbs

1x6 Jatoba T&G Siding — Complete Guide

Everything you need to know about t&g jatoba siding

About 1x6 Jatoba Tongue & Groove Siding

Jatoba, often referred to as Brazilian Cherry, is an exceptional choice for exterior siding and cladding due to its remarkable density and natural resistance to environmental stressors. The tongue and groove profile provides a secure interlocking fit that minimizes water infiltration, creates crisp shadow lines, and allows for both vertical and horizontal installation orientations. This system facilitates a uniform, seamless facade that accommodates natural wood movement while maintaining structural integrity.

  • Interlocking tongue and groove profile for enhanced weather resistance.
  • Creates clean, continuous lines suitable for modern architectural designs.
  • Excellent dimensional stability when properly acclimated.
  • Versatile orientation options for custom facade detailing.

Key Benefits

Exceptional Durability

With a Janka hardness of 2350, Jatoba offers superior protection against physical impact and wear compared to softer siding species.

Natural Resistance

Inherently resistant to fungi, termites, and wood-boring beetles, ensuring longevity in varied climates.

Aesthetic Evolution

Features rich, reddish-brown tones that weather to a sophisticated silver-gray if left unfinished, or can be maintained with UV-inhibiting sealers.

Technical Specifications

Janka Hardness

2350 lbf

Density

Approx. 58-60 lbs/ft³

Durability Rating

Class 1 (Highly resistant to decay and insects)

Dimensional Stability

High

Installation Guide

Difficulty:
Professional/Advanced

Key Tips:

  • Always allow for proper acclimation on-site for 48-72 hours prior to installation.
  • Ensure a ventilated rainscreen system is used to allow back-side airflow.
  • Use stainless steel fasteners to prevent staining from tannin reaction.
  • Provide adequate expansion gaps at terminations and corner joints.

Recommended Tools:

Stainless steel ring-shank siding nails or exterior-rated trim screws
Pneumatic finish nailer
Miter saw with carbide-tipped blade
Moisture meter

Maintenance & Care

Cleaning

Periodic washing with a mild detergent and water solution to remove surface dirt and debris.

Finishing

Apply a high-quality, penetrating UV-inhibiting oil finish if the original color is to be maintained. Reapply according to manufacturer specifications.

Weathering

If left untreated, the wood will naturally gray over time due to UV exposure; this does not affect the structural integrity of the boards.

1x6 Jatoba Tongue & Groove Siding — Frequently Asked Questions

A 1x6 Jatoba board weighs approximately 2.01 lbs per linear foot. Jatoba has a density of about 57 lbs/ft³, making it one of the densest commercially available hardwoods. A 12-foot 1x6 Jatoba board weighs approximately 20 lbs. Always factor weight into your structural and shipping calculations.

1x6 Jatoba siding has an expected service life of up to 40+ years when properly installed. This is 3-5× longer than pressure-treated pine and 2-3× longer than cedar. Jatoba achieves this exceptional longevity through its 2,350 Janka hardness and Class 1 durability rating, providing built-in resistance to rot, decay, insects, and fungal growth without chemical preservatives.

1x6 Jatoba siding 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, Jatoba's up to 40+-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 Jatoba wood siding outperforms composite in hardness (2,350 vs ~200 Janka), lifespan (up to 40+ years vs 25-30 years), and heat resistance. Unlike composites, Jatoba won't melt, warp in extreme heat, or fade significantly. While initial cost is similar ($8-15/LF installed), Jatoba wood decking costs less over its much longer lifetime. Composites do offer lower upfront maintenance, but Jatoba's natural beauty and durability make it the superior long-term investment.

Jatoba is widely considered one of the best woods for 1x6 siding boards. With a 2,350 Janka hardness rating, Class A fire-rated certification, and up to 40+-year lifespan, Jatoba (Brazilian Cherry) outperforms nearly every other commercially available wood species. Other excellent options include Cumaru (Brazilian Teak) and Massaranduba (Brazilian Redwood), but Jatoba remains the industry benchmark for premium outdoor hardwood applications.

Jatoba 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.

Jatoba is DIY-friendly with proper preparation. Key requirements: (1) Always pre-drill all screw holes — Jatoba 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 Jatoba 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 Jatoba. We work only with suppliers who follow responsible forestry practices with full chain-of-custody transparency. Jatoba trees grow naturally in diverse tropical forests and regenerate well under managed harvest. The extremely long lifespan (up to 40+ 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 Jatoba Tongue & Groove Siding — Complete Buyer's Guide

Jatoba is a premium tropical hardwood sourced from Central & South America (Brazil, Peru, Bolivia). With a Janka hardness rating of 2,350 lbf and a density of approximately 60 lbs/ft³, Jatoba is classified as Class 1-2 - Durable — one of the most durable commercial lumber species available.

Why Choose 1x6 Jatoba Wood for Your Siding?

As exterior cladding, Jatoba 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 Jatoba siding delivers a service life of 40+ years with minimal maintenance — an optional annual oil treatment preserves the original color, or you can let the Jatoba wood weather to a distinguished silver-gray patina. Jatoba 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 Jatoba lumber is available in Select and Better grade with lengths ranging from 4′ to 20′.

1x6 Jatoba 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 Jatoba board weighs approximately 20 lbs (1.63 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 Jatoba — the 2,350 lbf hardness prevents direct screwing

Janka Hardness

2,350 lbf

Service Life

40+ years

Durability

Class 1-2 - Durable

Fire Rating

Class A

Related Jatoba Products & Resources

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