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Decking

5/4x6 Jatoba Pre-Grooved Decking

This 5/4x6 Jatoba decking board (Pre-Grooved profile) pairs the proven outdoor performance of Jatoba (Brazilian Cherry) with a 2,350 Janka hardness rating — one of the hardest commercially available woods on earth. The pre-grooved profile accepts hidden clip fastening systems like Ipe Clip®, delivering a clean, screw-free surface ideal for exterior decks, patios, and pool surrounds. In stock and ships nationwide — order 5/4x6 Jatoba decking boards online or call 1-844-674-4455 for expert guidance.

5/4 x 6(1"×5.5" actual)[25.4mm × 139.7mm]
Contractor Trusted
Expert Backed
Ships Nationwide
SKU: JATO-54X6-PG-SB-L1

Configure Your Order

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

Architectural-grade Brazilian Cherry for superior outdoor structural integrity and aesthetic longevity.

Pregrooved

Grooves on both edges for field boards

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:2.67 lbs/LF
1' board:2.7 lbs

5/4x6 Jatoba Pregrooved Decking — Complete Guide

Everything you need to know about pregrooved jatoba decking

About 5/4x6 Jatoba Pre-Grooved Decking

Jatoba, commonly known as Brazilian Cherry, is an exceptionally dense hardwood chosen for high-traffic decking environments. Its cellular structure provides natural resistance to fungal decay and insect infestation, making it a reliable alternative to traditional temperate softwoods.

  • Pregrooved side-profile allows for the use of hidden fastener systems, providing a clean, fastener-free surface.
  • High natural oil content enhances resistance to moisture absorption and seasonal expansion.
  • Uniform surfacing facilitates consistent spacing and reduced installation labor costs.
  • The profile design ensures optimal tension distribution across the joist system.

Key Benefits

Exceptional Hardness

With a Janka rating of 2350, Jatoba resists surface scratching, denting from heavy furniture, and mechanical wear far better than softer alternatives.

Natural Longevity

High tannin and silica content provide a naturally durable surface that can last decades without chemical preservative treatments.

Aesthetic Consistency

The deep, reddish-brown hues provide a sophisticated look that matures into a stable silver-grey if left untreated, or maintains warmth with UV inhibitors.

Technical Specifications

Janka Hardness

2350 lbs

Density

Approx. 58 lbs/cu ft

Durability Rating

Class 1 (Highly resistant to decay and termites)

Dimensional Stability

High, though requires acclimation prior to install

Installation Guide

Difficulty:
Professional/Experienced DIY

Key Tips:

  • Acclimate boards for 48-72 hours in the install location prior to fastening.
  • Use high-quality stainless steel hidden fasteners specifically rated for hardwood grooved boards.
  • Maintain a 1/8 inch gap between boards to allow for potential expansion and drainage.
  • Always apply end-seal wax to freshly cut board ends to prevent moisture wicking.

Recommended Tools:

Carbide-tipped saw blades
High-torque drill/impact driver
Stainless steel hidden fastening system
End-grain sealer

Maintenance & Care

Cleaning

Remove debris regularly with a stiff-bristled broom; clean seasonally with mild soap and water.

Finishing

Apply a high-quality penetrating oil with UV inhibitors annually to preserve original color, or allow to weather naturally.

Weathering

Jatoba will transition to a silver-grey patina over time if left unfinished, which does not compromise structural integrity.

5/4x6 Jatoba Pre-Grooved Decking — Frequently Asked Questions

A 5/4x6 Jatoba board weighs approximately 2.67 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 5/4x6 Jatoba board weighs approximately 26 lbs. Always factor weight into your structural and shipping calculations.

5/4x6 Jatoba decking 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.

5/4x6 Jatoba decking 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 — 5/4x6 Jatoba wood decking 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 5/4x6 decking 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) This pre-grooved profile uses hidden clip systems like Ipe Clip® for a screw-free surface. (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 5/4x6 Jatoba board has actual finished dimensions of 1" × 5.5" (25.4 x 139.7 mm). The "5/4x6" 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 (1" × 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

5/4x6 Jatoba Pregrooved Decking — 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 5/4x6 Jatoba Wood for Your Deck?

Jatoba decking delivers a naturally slip-resistant, splinter-free surface that stays cool underfoot even in direct sunlight. Unlike composite or pressure-treated alternatives, it never fades to a dull gray unless you want the natural silver patina look. Properly installed 5/4x6 Jatoba decking 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 5/4x6 pregrooved profile has factory-milled grooves along both edges, designed specifically for hidden fastener clip systems like Ipe Clip or DeckWise. This creates a clean, screw-free surface with no visible hardware. All Jatoba lumber is available in Select and Better grade with lengths ranging from 4′ to 20′.

5/4x6 Jatoba Decking — Installation & Coverage Specs

  • Recommended joist spacing: 16"–24" on center for 5/4x6 boards (1" actual thickness)
  • Fastener placement: Hidden clip fastener in each factory-milled groove, one clip per joist
  • Board weight: A 12-foot 5/4x6 Jatoba board weighs approximately 26 lbs (2.18 lbs/LF)
  • Coverage: Each 12-foot 5/4x6 board covers 5.5 sq ft of decking 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

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