1x3 Garapa Pre-Grooved Decking board profile diagram
Decking

1x3 Garapa Pre-Grooved Decking

This 1x3 Garapa Pre-Grooved decking board pairs the proven outdoor performance of Garapa (Brazilian Ash) with a 1,510 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 Garapa decking 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: GARA-1X3-PG-SB-L1

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

Reliable Performance, Durability, and Visual Appeal

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:0.91 lbs/LF
1' board:0.91 lbs

1x3 Garapa Pre-Grooved Decking — Complete Guide

Everything you need to know about pregrooved garapa decking

About 1x3 Garapa Pre-Grooved Decking

Garapa lumber, particularly in a pre-grooved profile and 1x3 nominal (0.75x2.5 actual) sizing, stands out as an exceptional choice for decking applications. Known for its impressive strength, durability, and weather resistance, Garapa offers a long-lasting solution for both residential and commercial decking needs. The pre-grooved design simplifies fastening and provides a seamless appearance, ensuring that your deck not only performs well but also enhances the overall aesthetics of your outdoor space.

  • High strength-to-weight ratio
  • Excellent resistance to moisture and decay
  • Easy installation with pre-grooved profile
  • Natural resistance to insects
  • Attractive grain patterns and color variations

Key Benefits

Strength and Durability

Garapa's high Janka hardness of 1650 ensures that it withstands heavy foot traffic and adverse weather conditions without warping or cracking.

Weather Resistance

Naturally resistant to moisture, Garapa resists rot and decay, making it ideal for outdoor environments.

Aesthetic Appeal

The pre-grooved profile allows for hidden fastening, resulting in a clean, smooth surface that enhances the visual appeal of your deck.

Low Maintenance

Garapa requires minimal maintenance due to its durability and resistance to wear and tear, saving time and costs for deck owners.

Technical Specifications

Janka Hardness

1650

Density

Not specified

Durability Rating

Very durable

Dimensional Stability

Excellent

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper joist spacing for optimal support
  • Leave adequate expansion space between boards
  • Utilize hidden fasteners for a smooth finish

Recommended Tools:

Drill/driver
Hidden fastener system
Measuring tape
Saw

Maintenance & Care

Cleaning

Clean regularly with a mild detergent and water to remove dirt and debris. Avoid using harsh chemicals that can damage the finish.

Finishing

Apply a protective finish suitable for outdoor use to maintain the wood’s appearance and enhance its longevity. Reapply as necessary based on environmental exposure.

Weathering

Natural weathering will occur, causing color changes over time. This is normal and can be managed with consistent maintenance.

Frequently Asked Questions

A 1x3 Garapa board weighs approximately 0.91 lbs per linear foot. Garapa has a density of about 50-60 lbs/ft³, making it one of the densest commercially available hardwoods. Always factor weight into your structural and shipping calculations.

Yes — Garapa 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 decking applications. While ground contact is possible, we recommend elevating Garapa boards at least 6" above grade for maximum lifespan.

Garapa outperforms composite in hardness (1,510 vs ~200 Janka), lifespan (up to 30+ years vs 25-30 years), and heat resistance. Unlike composites, Garapa won't melt, warp in extreme heat, or fade significantly. While initial cost is similar ($8-15/LF installed), Garapa costs less over its much longer lifetime. Composites do offer lower upfront maintenance.

Garapa 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.

Garapa is DIY-friendly with proper preparation. Key requirements: (1) Always pre-drill all screw holes — Garapa 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 1x3 Garapa 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 Garapa. We work only with suppliers who follow responsible forestry practices with full chain-of-custody transparency. Note: We are not FSC certified. Garapa trees grow naturally in diverse tropical forests and regenerate well under managed harvest. The extremely long lifespan (up to 30+ 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