1x8 Ipe Tongue & Groove Siding board profile diagram
Siding

1x8 Ipe Tongue & Groove Siding

This 1x8 Ipe siding board (Tongue & Groove profile) offers unmatched exterior cladding longevity, backed by Ipe's 3,680 Janka hardness and a natural lifespan of up to 75+ years. The interlocking tongue and groove profile creates tight, seamless joints for exterior cladding and accent walls, with no visible fasteners on the finished surface. In stock and ships nationwide — order 1x8 Ipe siding boards online or call 1-844-674-4455 for expert guidance.

1 x 8(0.75"×7.25" actual)[19.0mm × 184.1mm]
Contractor Trusted
Expert Backed
Ships Nationwide
SKU: IPE-1X8-TG-SB-L1

Configure Your Order

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

Unmatched Durability and Aesthetic Appeal

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:2.64 lbs/LF
1' board:2.6 lbs

1x8 Ipe T&G Siding — Complete Guide

Everything you need to know about t&g ipe siding

About 1x8 Ipe Tongue & Groove Siding

Ipe lumber, renowned for its exceptional durability and stability, is an ideal choice for exterior siding and cladding applications. Its natural resistance to harsh weather conditions and pests makes it a preferred material for various architectural styles. The tongue-and-groove profile not only enhances the aesthetic appeal through clean lines and shadow gaps but also facilitates easy installation and alignment, offering versatility in orientation for both vertical and horizontal applications.

  • Superior dimensional stability
  • Outstanding weather resistance
  • Elegant tongue-and-groove profile for seamless appearance
  • Robust and long-lasting material suitable for exterior use.

Key Benefits

Exceptional Durability

Ipe wood possesses a Janka hardness rating of 3680, making it one of the hardest and most durable woods available, ideal for challenging exterior environments.

Natural Resistance

This wood is naturally resistant to rot, insects, and decay, ensuring a long lifespan with minimal maintenance.

Stunning Appearance

With rich colors and a fine grain, the aesthetic quality of ipe enhances any building design, creating a timeless and sophisticated look.

Sustainable Choice

Sourced from responsibly managed forests, ipe is a sustainable option for environmentally conscious projects, offering both performance and ethics.

Technical Specifications

Janka Hardness

3680

Density

69 lbs/ft³

Durability Rating

Very Resistant to Rot and Insects

Dimensional Stability

Minimal shrinkage or swelling under varying moisture conditions.

Installation Guide

Difficulty:
Moderate

Key Tips:

  • Ensure proper spacing for expansion and contraction
  • Utilize corrosion-resistant fasteners to maximize longevity
  • Follow the recommended installation guidelines for tongue-and-groove profiles

Recommended Tools:

Circular saw for cutting
Drill/driver for fastening
Level to ensure straight installation

Maintenance & Care

Cleaning

Regularly clean surfaces with a gentle soap solution and a soft brush to remove dirt and debris.

Finishing

Consider an oil-based finish to maintain the original color and reduce graying; reapply every 1-2 years depending on exposure conditions.

Weathering

Over time, ipe naturally weathers to a silver-gray patina if left untreated, though it retains its structural integrity.

1x8 Ipe Tongue & Groove Siding — Frequently Asked Questions

A 1x8 Ipe board weighs approximately 2.64 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 1x8 Ipe board weighs approximately 31 lbs. Always factor weight into your structural and shipping calculations.

1x8 Ipe siding 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.

1x8 Ipe siding 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 — 1x8 Ipe wood siding 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 1x8 siding 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 1x8 Ipe board has actual finished dimensions of 0.75" × 7.25" (19.0 x 184.1 mm). The "1x8" 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" × 7.25") 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

1x8 Ipe Tongue & Groove Siding — 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 1x8 Ipe Wood for Your Siding?

As exterior cladding, Ipe siding provides a weather-tight barrier with exceptional impact resistance. The dense grain resists dents, hail damage, and woodpecker damage far better than cedar, pine, or fiber cement alternatives. Properly installed 1x8 Ipe siding 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 1x8 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.

1x8 Ipe Siding — Installation & Coverage Specs

  • Recommended joist spacing: 16" on center for 1x8 boards (0.75" actual thickness)
  • Fastener placement: Secure per profile requirements, one fastener per joist minimum
  • Board weight: A 12-foot 1x8 Ipe board weighs approximately 31 lbs (2.61 lbs/LF)
  • Coverage: Each 12-foot 1x8 board covers 7.3 sq ft of siding surface (7.25" 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)

1x8 Ipe Siding — Frequently Asked Questions

1x8 Ipe siding 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.

1x8 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.

1x8 Ipe siding pricing varies by profile, grade, and board length. 1x8 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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