1x3 Garapa Tongue & Groove Soffit board profile diagram
Soffit

1x3 Garapa Tongue & Groove Soffit

This 1x3 Garapa Tongue & Groove soffit board combines the rich grain of Garapa (Brazilian Ash) with 1,510 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 Garapa soffit online or call 1-844-674-4455 for expert guidance.

1 x 3(0.75"×2.5" actual)[19.0mm × 63.5mm]
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SKU: GARA-1X3-TG-SB-L1

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Durable, Moisture-Resistant, and Aesthetically Pleasing Tongue-Groove Profile

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:0.91 lbs

1x3 Garapa Tongue & Groove Soffit — Complete Guide

Everything you need to know about t&g garapa soffit

About 1x3 Garapa Tongue & Groove Soffit

Garapa lumber, known for its exceptional durability and resistance to moisture, is an ideal choice for soffit applications. Its dimensional stability ensures that it maintains its shape and integrity over time, while the tongue-groove profile provides an attractive finish and enhances ventilation, crucial for protecting the components of building structures. Designed to withstand outdoor environments, Garapa combines function and beauty, making it a trusted material for soffit use.

  • Excellent resistance to moisture and dimensional warping
  • Attractive tongue-groove profile for clean lines
  • Durable against rot and insect damage
  • Compatible with both vented and non-vented soffit designs

Key Benefits

Durability

Garapa lumber is exceptionally durable, resisting rot and insect damage, making it suitable for exterior applications where exposure to the elements is a concern.

Low Maintenance

The natural oils in Garapa wood reduce the need for frequent maintenance, allowing for longer intervals between treatments and upkeep.

Visual Appeal

Garapa presents an elegant appearance with varying shades of golden brown that enhance the overall aesthetics of any architectural project.

Long-Term Value

Investing in Garapa ensures longevity, reducing the need for replacements and repairs, and thereby delivering substantial long-term cost savings.

Technical Specifications

Janka Hardness

1650

Density

Around 46 lbs/ft³

Durability Rating

Highly durable with natural resistance to decay and insects

Dimensional Stability

Superior stability in various weather conditions

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper ventilation to prevent moisture buildup
  • Leave appropriate spacing for expansion during installation
  • Use stainless steel screws for better corrosion resistance

Recommended Tools:

Drill
Table saw
Tape measure
Angle square

Maintenance & Care

Cleaning

Clean with mild soap and water; avoid harsh chemicals that can damage the wood.

Finishing

Consider periodic application of UV protection to maintain color and grain integrity.

Weathering

Garapa naturally weathers to a beautiful silver-gray if left untreated; maintenance can slow this process.

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 soffit 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) 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 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

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