5/4x4 Garapa Rainscreen Siding board profile diagram
Siding

5/4x4 Garapa Rainscreen Siding

This 5/4x4 Garapa Rainscreen siding board offers unmatched exterior cladding longevity, backed by Garapa's 1,510 Janka hardness and a natural lifespan of up to 30+ years. The rainscreen profile is designed for ventilated clip systems, allowing airflow behind the cladding for superior moisture management on exterior cladding and accent walls. In stock and ships nationwide — order Garapa siding 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-RAIN-SB-L1

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Durable, Aesthetic, and Weather-Resistant Siding Solution

Rainscreen

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 Rainscreen Siding — Complete Guide

Everything you need to know about rainscreen garapa siding

About 5/4x4 Garapa Rainscreen Siding

Garapa lumber is widely recognized for its outstanding performance in exterior siding and cladding applications. Known for its dimensional stability and robust weather resistance, Garapa is an ideal choice for construction environments subject to humidity and temperature fluctuations. The rainscreen profile enhances the aesthetics of structures by creating distinct shadow lines and allowing flexible installation orientations. This combination makes Garapa a valuable material for architects and builders seeking long-lasting and visually appealing exterior solutions.

  • Exceptional dimensional stability
  • High resistance to moisture and weathering
  • Aesthetic rainscreen profile enhances building design
  • Easy to install with various orientations
  • Ideal for both horizontal and vertical applications

Key Benefits

Durability

Garapa wood is known for its impressive resistance to rot and pests, making it exceptionally durable in outdoor conditions.

Visual Appeal

The natural grain patterns and warm color tones of Garapa enhance the visual interest of any siding project.

Longevity

With proper installation and maintenance, Garapa can last for decades, maintaining its integrity and appearance over time.

Value for Investment

Garapa offers a cost-effective solution in the long run due to its low maintenance requirements and longevity.

Technical Specifications

Janka Hardness

1650

Density

0.56 g/cm³

Durability Rating

Class 1 (Durable)

Dimensional Stability

Excellent, minimal shrinkage and expansion

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure all components are properly sealed to avoid moisture penetration
  • Leave adequate spacing for expansion and contraction
  • Follow the manufacturer's recommendations for fastening techniques

Recommended Tools:

Saws (circular, miter)
Cordless drill
Level
Measuring tape

Maintenance & Care

Cleaning

Occasionally clean with warm soapy water to remove dirt and debris.

Finishing

Consider applying a UV-blocking sealer to maintain color and protect against weathering.

Weathering

Garapa typically weathers to a silvery hue if left untreated, which can be desirable for a rustic appearance.

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 siding 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

Alternative Siding Option

This same Garapa 5/4 x 4 is also available in a different siding profile:

Shiplap

Overlapping profile for traditional siding applications

Related Garapa Products & Resources

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