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Soffit

1x3 Jatoba Tongue & Groove Soffit

This 1x3 Jatoba soffit board (Tongue & Groove profile) combines the rich grain of Jatoba (Brazilian Cherry) with 2,350 Janka hardness, making it ideal for exposed eave linings and covered ceilings that endure for decades. The interlocking tongue and groove profile creates tight, seamless joints for eave linings, ceilings, and covered areas, with no visible fasteners on the finished surface. In stock and ships nationwide — order 1x3 Jatoba soffit boards online or call 1-844-674-4455 for expert guidance.

1 x 3(0.75"×2.5" actual)[19.0mm × 63.5mm]
Contractor Trusted
Expert Backed
Ships Nationwide
SKU: JATO-1X3-TG-SB-L1

Configure Your Order

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

High-density Brazilian Cherry engineered for superior stability and moisture resistance in exterior overhead 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:0.91 lbs/LF
1' board:0.9 lbs

1x3 Jatoba T&G Soffit — Complete Guide

Everything you need to know about t&g jatoba soffit

About 1x3 Jatoba Tongue & Groove Soffit

Jatoba, often referred to as Brazilian Cherry, provides an exceptional balance of structural integrity and aesthetic refinement for exterior soffit installations. Its inherent resistance to moisture, combined with a precise tongue and groove profile, ensures a seamless, weather-resistant finish. This configuration promotes clean architectural lines while allowing for necessary thermal expansion and contraction in exposed environments.

  • Precision-milled tongue and groove profile for uniform alignment
  • High natural oil content provides inherent moisture and rot resistance
  • Excellent dimensional stability ideal for controlled exterior environments
  • Clean visual transition between board profiles for architectural appeal

Key Benefits

Natural Decay Resistance

Jatoba possesses high concentrations of natural extractives that inhibit fungal growth, wood-boring insects, and subterranean termites without the need for chemical treatment.

Structural Density

With a Janka hardness of 2350, this species provides rigid, impact-resistant performance, ensuring the material remains flat and stable as an overhead application.

Aesthetic Consistency

The deep reddish-brown tones and interlocking grain pattern provide a sophisticated, high-end visual result suitable for premium architectural projects.

Technical Specifications

Janka Hardness

2350

Density

950 kg/m3

Durability Rating

Class 1 (Very Durable)

Dimensional Stability

High

Installation Guide

Difficulty:
Professional/Advanced

Key Tips:

  • Allow for proper ventilation behind the soffit boards to manage moisture
  • Utilize stainless steel hidden fasteners or ring-shank trim nails for corrosion resistance
  • Acclimate material on-site for at least 48 hours prior to installation
  • Apply an end-grain sealer to all cut board ends to prevent moisture absorption

Recommended Tools:

Stainless steel fasteners
Miter saw with carbide-tipped blade
Pneumatic finish nailer
End-grain sealant

Maintenance & Care

Cleaning

Periodic cleaning with mild soap and water to remove airborne dust and debris is sufficient.

Finishing

If original color retention is desired, apply a high-quality, UV-inhibiting penetrating oil finish. If left unfinished, the wood will transition to a silver-grey patina.

Weathering

Jatoba is stable enough to remain unfinished, though UV exposure will alter the natural pigment over time.

1x3 Jatoba Tongue & Groove Soffit — Frequently Asked Questions

A 1x3 Jatoba board weighs approximately 0.91 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 1x3 Jatoba board weighs approximately 9 lbs. Always factor weight into your structural and shipping calculations.

1x3 Jatoba soffit 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.

1x3 Jatoba 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, 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 — 1x3 Jatoba wood soffit 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 1x3 soffit 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 1x3 Jatoba 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 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

1x3 Jatoba Tongue & Groove Soffit — 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 1x3 Jatoba Wood for Your Soffit?

Jatoba 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 1x3 Jatoba soffit 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 1x3 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′.

1x3 Jatoba Soffit — Installation & Coverage Specs

  • Recommended joist spacing: 16" on center for 1x3 boards (0.75" actual thickness)
  • Fastener placement: Secure per profile requirements, one fastener per joist minimum
  • Board weight: A 12-foot 1x3 Jatoba board weighs approximately 9 lbs (0.74 lbs/LF)
  • Coverage: Each 12-foot 1x3 board covers 2.5 sq ft of soffit surface (2.5" 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

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