1x3 Ipe Tongue & Groove Soffit board profile diagram
Soffit

1x3 Ipe Tongue & Groove Soffit

This 1x3 Ipe soffit board (Tongue & Groove profile) combines the rich grain of Ipe (Brazilian Walnut) with 3,680 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 1x3 Ipe soffit boards 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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Ships Nationwide
SKU: IPE-1X3-TG-SB-L1

Configure Your Order

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

Durable, Attractive, and Easy to Install

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:0.9 lbs

1x3 Ipe T&G Soffit — Complete Guide

Everything you need to know about t&g ipe soffit

About 1x3 Ipe Tongue & Groove Soffit

Ipe lumber, particularly in a tongue-groove profile, is an exceptional choice for soffit applications. Renowned for its superior dimensional stability and remarkable durability, ipe is resistant to moisture, making it ideal for exterior overhead installations. The tongue-groove feature ensures seamless joins that not only improve aesthetic appeal with clean lines but also allow for effective ventilation, crucial for maintaining healthy airflow in enclosed spaces.

  • Exceptional dimensional stability
  • High durability and rot resistance
  • Moisture-resistant properties for exterior applications
  • Tongue-groove profile provides seamless installation and ventilation compatibility

Key Benefits

Rot and Insect Resistance

Ipe lumber exhibits a natural resistance to decay and insect damage, extending the lifespan of soffit installations even in challenging weather conditions.

Aesthetic Appeal

The rich, dark color and fine grain of ipe add distinctive character to any architectural project, enhancing the overall appearance of soffits.

Low Maintenance Requirements

Once installed, ipe requires minimal maintenance compared to other wood species, making it an economical choice in the long run.

Technical Specifications

Janka Hardness

3680

Density

69 lbs/ft³

Durability Rating

Class 1 (very durable)

Dimensional Stability

Excellent dimensional stability with low movement due to moisture fluctuations

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Use stainless steel or coated fasteners to prevent corrosion
  • Allow for expansion by maintaining proper spacing between boards
  • Ensure proper ventilation to avoid moisture buildup

Recommended Tools:

Circular saw
Miter saw
Hammer or nail gun
Drill with screws

Maintenance & Care

Cleaning

Clean with a soft brush and mild soap solution to remove dirt; avoid harsh chemicals that can damage the wood.

Finishing

Apply UV-resistant wood oil or sealant to maintain color and enhance moisture resistance, reapplied as necessary, typically every 1-3 years.

Weathering

Over time, ipe will naturally weather to a silver patina if left untreated; regular finishing can preserve its rich color.

1x3 Ipe Tongue & Groove Soffit — Frequently Asked Questions

A 1x3 Ipe board weighs approximately 0.91 lbs per linear foot. Ipe has a density of about 69 lbs/ft³, making it one of the densest commercially available hardwoods. A 12-foot 1x3 Ipe board weighs approximately 11 lbs. Always factor weight into your structural and shipping calculations.

1x3 Ipe soffit has an expected service life of up to 75+ years when properly installed. This is 3-5× longer than pressure-treated pine and 2-3× longer than cedar. Ipe achieves this exceptional longevity through its 3,680 Janka hardness and Class 1 durability rating, providing built-in resistance to rot, decay, insects, and fungal growth without chemical preservatives.

1x3 Ipe soffit 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, Ipe's up to 75+-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 — 1x3 Ipe wood soffit outperforms composite in hardness (3,680 vs ~200 Janka), lifespan (up to 75+ years vs 25-30 years), and heat resistance. Unlike composites, Ipe won't melt, warp in extreme heat, or fade significantly. While initial cost is similar ($8-15/LF installed), Ipe wood decking costs less over its much longer lifetime. Composites do offer lower upfront maintenance, but Ipe's natural beauty and durability make it the superior long-term investment.

Ipe is widely considered one of the best woods for 1x3 soffit boards. With a 3,680 Janka hardness rating, Class A fire-rated certification, and up to 75+-year lifespan, Ipe (Brazilian Walnut) outperforms nearly every other commercially available wood species. Other excellent options include Cumaru (Brazilian Teak) and Massaranduba (Brazilian Redwood), but Ipe remains the industry benchmark for premium outdoor hardwood applications.

Ipe 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.

Ipe is DIY-friendly with proper preparation. Key requirements: (1) Always pre-drill all screw holes — Ipe 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 Ipe 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 Ipe. We work only with suppliers who follow responsible forestry practices with full chain-of-custody transparency. Note: We are not FSC certified. Ipe trees grow naturally in diverse tropical forests and regenerate well under managed harvest. The extremely long lifespan (up to 75+ 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

1x3 Ipe Tongue & Groove Soffit — Complete Buyer's Guide

Ipe, also known as Brazilian Walnut, is a premium tropical hardwood sourced from Central and South America (Brazil, Bolivia, Peru). With a Janka hardness rating of 3,680 lbf and a density of 69 lbs/ft³, Ipe is classified as Class 1 - Very Durable (Up to 75+ Years) — one of the most durable commercial lumber species available. The heartwood exhibits rich brown to olive-brown, darkening to reddish-brown with age with interlocked to irregular grain, fine to medium texture, creating a striking natural appearance that improves with age.

Why Choose 1x3 Ipe Wood for Your Soffit?

Ipe soffit and porch ceiling boards create a warm, premium overhead aesthetic that vinyl and aluminum simply cannot replicate. The natural grain pattern adds architectural character to any covered outdoor space. Properly installed 1x3 Ipe soffit delivers a service life of 75+ years with minimal maintenance — an optional annual oil treatment preserves the original color, or you can let the Ipe wood weather to a distinguished silver-gray patina. Ipe carries a Class A (0-25 flame spread), making it suitable for wildfire-prone regions where code-compliant materials are required.

The 1x3 tongue & groove (T&G) profile features interlocking edges that create a seamless, flush surface with no visible gaps. Ideal for porch ceilings, soffit installations, and covered porch floors. All Ipe lumber is available in Select and Better grade with lengths ranging from 4′ to 20′. For detailed step-by-step instructions, consult our Ipe installation guide. Long-term care recommendations are covered in our Ipe maintenance guide.

1x3 Ipe Soffit — Installation & Coverage Specs

  • Recommended joist spacing: 16" on center for 1x3 boards (0.75" actual thickness)
  • Fastener placement: Secure per profile requirements, one fastener per joist minimum
  • Board weight: A 12-foot 1x3 Ipe board weighs approximately 11 lbs (0.90 lbs/LF)
  • Coverage: Each 12-foot 1x3 board covers 2.5 sq ft of soffit surface (2.5" face width)
  • Pre-drilling required: Always pre-drill in Ipe — the 3,680 lbf hardness prevents direct screwing

Janka Hardness

3,680 lbf

Service Life

75+ years

Durability

Very Durable (Up to 75+ Years)

Fire Rating

Class A (0-25 flame spread)

1x3 Ipe Soffit — Frequently Asked Questions

1x3 Ipe soffit has an expected service life of 75+ years when properly installed and maintained. This is 3-5x longer than pressure-treated pine and 2-3x longer than cedar. Ipe achieves this exceptional longevity through its natural density (Janka hardness: 3,680 lbf) and Class 1 durability rating, which provide built-in resistance to rot, decay, insects, and fungal growth — all without chemical preservatives.

1x3 tongue & groove Ipe boards interlock via a milled tongue on one edge and a corresponding groove on the other. Secure each board by blind-nailing through the tongue at a 45° angle using stainless steel ring-shank nails or by face-screwing with countersunk stainless steel screws. Always pre-drill holes in Ipe to prevent splitting. T&G Ipe should only be used in covered or semi-protected areas.

1x3 Ipe soffit pricing varies by profile, grade, and board length. 1x3 Tongue & Groove 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, Ipe's 75+ 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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