1x4 Garapa Pre-Grooved Decking board profile diagram
Decking

1x4 Garapa Pre-Grooved Decking

This 1x4 Garapa decking board (Pre-Grooved profile) pairs the proven outdoor performance of Garapa (Brazilian Ash) with a 1,650 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 1x4 Garapa decking boards online or call 1-844-674-4455 for expert guidance.

1 x 4(0.75"×3.5" actual)[19.0mm × 88.9mm]
Contractor Trusted
Expert Backed
Ships Nationwide
SKU: GARA-1X4-PG-SB-L1

Configure Your Order

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

The Perfect Choice for Durable and Weather-Resistant Decks

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:1.28 lbs/LF
1' board:1.3 lbs

1x4 Garapa Pregrooved Decking — Complete Guide

Everything you need to know about pregrooved garapa decking

About 1x4 Garapa Pre-Grooved Decking

Garapa, a robust and attractive hardwood, is highly sought after for decking applications due to its impressive strength and inherent durability. Known for its weather resistance and longevity, Garapa stands as a premier choice for those looking to enhance their outdoor spaces. The pregrooved profile of our 1x4 Garapa boards not only enhances the appearance of your deck with clean, uniform lines but also allows for secure fastening with hidden screws, providing a seamless look while reducing the risk of water accumulation that can cause warping or damage to the wood.

  • Exceptional strength and durability
  • Natural resistance to moisture and pests
  • Enhanced aesthetic appeal with pregrooved profile
  • Easy installation with hidden fasteners

Key Benefits

High Strength and Durability

Garapa's Janka hardness of 1650 indicates its robust structure, making it highly resistant to wear and tear, ensuring a long-lasting surface for decks.

Weather Resistance

Garapa lumber withstands various weather conditions, resisting moisture, rot, and insect damage, maintaining its integrity over time.

Low Maintenance

The low maintenance requirements of Garapa mean lower operational costs, making it a practical choice for both residential and commercial applications.

Technical Specifications

Janka Hardness

1650

Density

53 lbs/ft³

Durability Rating

Very High (Class 1)

Dimensional Stability

Excellent

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Use pre-grooved fasteners for a clean look
  • Leave adequate spacing between boards for expansion
  • Ensure proper ventilation beneath the deck for longevity

Recommended Tools:

Drill
Screwdriver
Level

Maintenance & Care

Cleaning

Regular cleaning with soap and water is recommended to maintain the surface appearance. Avoid harsh chemicals that may damage the wood finish.

Finishing

Apply a wood preservative or stain annually to enhance color and protect against UV damage.

Weathering

Natural weathering will occur, leading to a silver-gray patina over time. Regular maintenance can help retain the original color.

1x4 Garapa Pre-Grooved Decking — Frequently Asked Questions

A 1x4 Garapa board weighs approximately 1.28 lbs per linear foot. Garapa has a density of about 52 lbs/ft³, making it one of the densest commercially available hardwoods. A 12-foot 1x4 Garapa board weighs approximately 11 lbs. Always factor weight into your structural and shipping calculations.

1x4 Garapa decking has an expected service life of up to 30+ years when properly installed. This is 3-5× longer than pressure-treated pine and 2-3× longer than cedar. Garapa achieves this exceptional longevity through its 1,650 Janka hardness and Class 1 durability rating, providing built-in resistance to rot, decay, insects, and fungal growth without chemical preservatives.

1x4 Garapa decking pricing varies by profile, grade, and board length. Select and Better grade boards typically range from $4-$12 per linear foot before shipping. While the upfront cost is higher than pressure-treated lumber, Garapa's up to 30+-year service life makes the lifetime cost per year significantly lower. Use the configurator above for exact pricing, or request a custom quote for large orders.

Yes — 1x4 Garapa wood decking outperforms composite in hardness (1,650 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 wood decking costs less over its much longer lifetime. Composites do offer lower upfront maintenance, but Garapa's natural beauty and durability make it the superior long-term investment.

Garapa is widely considered one of the best woods for 1x4 decking boards. With a 1,650 Janka hardness rating, Class A fire-rated certification, and up to 30+-year lifespan, Garapa (Brazilian Ash) outperforms nearly every other commercially available wood species. Other excellent options include Cumaru (Brazilian Teak) and Massaranduba (Brazilian Redwood), but Garapa remains the industry benchmark for premium outdoor hardwood applications.

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 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

1x4 Garapa Pregrooved Decking — Complete Buyer's Guide

Garapa, also known as Brazilian Ash, is a premium tropical hardwood sourced from South America (Brazil, Suriname, Guyana). With a Janka hardness rating of 1,650 lbf and a density of 53 lbs/ft³, Garapa is classified as Class 2 - Durable — one of the most durable commercial lumber species available. The heartwood exhibits blonde to golden yellow, darkening to honey amber with interlocked grain, medium texture, creating a striking natural appearance that improves with age.

Why Choose 1x4 Garapa Wood for Your Deck?

Garapa decking delivers a naturally slip-resistant, splinter-free surface that stays cool underfoot even in direct sunlight. Unlike composite or pressure-treated alternatives, it never fades to a dull gray unless you want the natural silver patina look. Properly installed 1x4 Garapa decking delivers a service life of 30+ years with minimal maintenance — an optional annual oil treatment preserves the original color, or you can let the Garapa wood weather to a distinguished silver-gray patina. Garapa carries a Class A - Low flame spread, making it suitable for wildfire-prone regions where code-compliant materials are required.

The 1x4 pregrooved profile has factory-milled grooves along both edges, designed specifically for hidden fastener clip systems like Ipe Clip or DeckWise. This creates a clean, screw-free surface with no visible hardware. All Garapa lumber is available in Select and Better grade with lengths ranging from 4′ to 20′. For detailed step-by-step instructions, consult our Garapa installation guide. Long-term care recommendations are covered in our Garapa maintenance guide.

1x4 Garapa Decking — Installation & Coverage Specs

  • Recommended joist spacing: 16" on center for 1x4 boards (0.75" actual thickness)
  • Fastener placement: Hidden clip fastener in each factory-milled groove, one clip per joist
  • Board weight: A 12-foot 1x4 Garapa board weighs approximately 11 lbs (0.95 lbs/LF)
  • Coverage: Each 12-foot 1x4 board covers 3.5 sq ft of decking surface (3.5" face width)
  • Pre-drilling required: Always pre-drill in Garapa — the 1,650 lbf hardness prevents direct screwing

Janka Hardness

1,650 lbf

Service Life

30+ years

Durability

Durable

Fire Rating

Class A

1x4 Garapa Decking — Frequently Asked Questions

1x4 Garapa decking has an expected service life of 30+ years when properly installed and maintained. This is 3-5x longer than pressure-treated pine and 2-3x longer than cedar. Garapa achieves this exceptional longevity through its natural density (Janka hardness: 1,650 lbf) and Class 1 durability rating, which provide built-in resistance to rot, decay, insects, and fungal growth — all without chemical preservatives.

1x4 pregrooved Garapa boards are compatible with all major hidden fastener systems including Ipe Clip Extreme S, DeckWise Ipe Clip, and Camo EdgeClip. These stainless steel clips insert into the factory-milled grooves and secure the board to the joist from below — creating a clean surface with no visible screws. Always use 316 stainless steel clips in coastal environments.

1x4 Garapa decking pricing varies by profile, grade, and board length. 1x4 Pregrooved boards in Select and Better grade typically range from $4-$12 per linear foot before shipping. While the upfront cost is higher than pressure-treated lumber, Garapa's 30+ years service life makes the lifetime cost per year significantly lower. Use our online configurator above to see exact pricing for your selected options, or request a custom quote for large orders.

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