1x4 Garapa Tongue & Groove Soffit board profile diagram
Soffit

1x4 Garapa Tongue & Groove Soffit

This 1x4 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 4(0.75"×3.5" actual)[19.0mm × 88.9mm]
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SKU: GARA-1X4-TG-SB-L1

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

1x4 Size Perfect for Soffit 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:1.28 lbs/LF
1' board:1 lbs

1x4 Garapa Tongue & Groove Soffit — Complete Guide

Everything you need to know about t&g garapa soffit

About 1x4 Garapa Tongue & Groove Soffit

Garapa lumber, especially in a tongue-and-groove profile, is an ideal choice for soffit applications. Known for its exceptional dimensional stability and durability, Garapa stands up to moisture exposure, making it a reliable material for exterior use. The tongue-and-groove design allows for clean lines and efficient installation, enhancing both the aesthetic appeal and ventilation of any soffit application.

  • Dimensional stability ensures minimal warping or movement over time.
  • Highly durable and resistant to moisture, making it suitable for exterior environments.
  • Tongue-and-groove profile provides a seamless, finished look while promoting airflow.

Key Benefits

Durability and Longevity

Garapa has a proven track record of performance in outdoor applications, with a durability that enhances the life of soffit installations.

Low Maintenance

Requires minimal upkeep compared to other wood species, retaining its integrity and appearance without frequent refinishing.

Aesthetic Appeal

With a natural, warm color variation and attractive grain pattern, Garapa enhances the visual appeal of any architectural design.

Technical Specifications

Janka Hardness

1650

Density

0.75 g/cm³

Durability Rating

Above Average

Dimensional Stability

Excellent dimensional stability, resistant to warping and splitting.

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper ventilation when installing to prevent moisture buildup.
  • Use corrosion-resistant fasteners to maintain the integrity of the installation over time.
  • Follow spacing guidelines to allow for natural expansion and contraction.

Recommended Tools:

Power drill
Measuring tape
Saw (ideally a miter saw)

Maintenance & Care

Cleaning

Regularly sweep or wash the soffit to remove debris; a gentle cleaner can be used for tougher stains.

Finishing

Consider applying a penetrating oil or sealant to protect from UV exposure and moisture.

Weathering

Garapa naturally weathers to a beautiful silver patina if left untreated, although yearly maintenance can preserve its original color.

Frequently Asked Questions

A 1x4 Garapa board weighs approximately 1.28 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 1x4 Garapa board has actual finished dimensions of 0.75" × 3.5" (19.0 x 88.9 mm). The "1x4" 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" × 3.5") 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