5/4x4 Garapa Tongue & Groove Soffit board profile diagram
Soffit

5/4x4 Garapa Tongue & Groove Soffit

This 5/4x4 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.

5/4 x 4(1"×3.5" actual)[25.4mm × 88.9mm]
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SKU: GARA-54X4-TG-SB-L1

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Durable and Aesthetic Tongue-Groove Profile in 5/4x4 Size

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:1.70 lbs/LF
1' board:2 lbs

5/4x4 Garapa Tongue & Groove Soffit — Complete Guide

Everything you need to know about t&g garapa soffit

About 5/4x4 Garapa Tongue & Groove Soffit

Garapa lumber, particularly in a tongue-and-groove profile and 5/4x4 nominal size, is an excellent choice for soffit applications due to its exceptional dimensional stability and resistance to moisture. The tongue-and-groove design allows for a seamless installation that not only enhances aesthetic appeal with clean lines but also supports proper ventilation, helping to maintain the integrity of overhead structures by facilitating airflow.

  • Highly resistant to moisture and weathering
  • Dimensional stability minimizes warping and cracking
  • Tongue-and-groove installation for clean, professional appearance
  • Suitable for both vented and non-vented soffit designs

Key Benefits

Superior Durability

Garapa's natural properties provide resistance to rot and insects, ensuring longevity in soffit applications.

Low Maintenance

Requires minimal upkeep compared to other softwoods, making it ideal for hard-to-reach areas like soffits.

Aesthetic Appeal

Rich golden hue and fine grain pattern enhance the visual character of any exterior.

Technical Specifications

Janka Hardness

1650

Density

0.64 g/cm³

Durability Rating

Highly durable; naturally resistant to rot and insect damage

Dimensional Stability

Excellent, suitable for variable climates and extreme weather conditions

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Leave a gap between boards for expansion
  • Use stainless steel or coated fasteners to avoid corrosion
  • Ensure that there is adequate ventilation to prevent moisture buildup

Recommended Tools:

Power drill
Circular saw
Measuring tape
Level

Maintenance & Care

Cleaning

Regularly clean with a gentle wood cleaner and rinse with water to maintain appearance.

Finishing

Apply a UV-resistant finish annually to preserve color and finish integrity.

Weathering

Garapa will weather to a silver-grey finish if left untreated; periodic reapplication of finish can maintain its golden hue.

Frequently Asked Questions

A 5/4x4 Garapa board weighs approximately 1.70 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 5/4x4 Garapa board has actual finished dimensions of 1" × 3.5" (25.4 x 88.9 mm). The "5/4x4" 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" × 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