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1x3 Red Balau Shiplap Soffit board profile diagram
Soffit

1x3 Red Balau Shiplap Soffit

This 1x3 Red Balau soffit board (Shiplap profile) combines the rich grain of Red Balau (Bangkirai) with 1,580 Janka hardness, making it ideal for exposed eave linings and covered ceilings that endure for decades. The overlapping shiplap profile sheds water naturally and creates a classic, weather-resistant look for eave linings, ceilings, and covered areas. In stock and ships nationwide — order 1x3 Red Balau 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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SKU: REDB-1X3-SHIP-SB-L1

Configure Your Order

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

Shiplap

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

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1x3 Red Balau Shiplap Soffit — Complete Buyer's Guide

Red Balau, also known as Bangkirai, is a premium tropical hardwood sourced from Southeast Asia (Malaysia, Indonesia, Philippines). With a Janka hardness rating of 1,580 lbf and a density of 59 lbs/ft³, Red Balau is classified as Class 2 - Durable — one of the most durable commercial lumber species available. The heartwood exhibits light to medium red-brown with interlocked grain, moderately coarse texture, creating a striking natural appearance that improves with age.

Why Choose 1x3 Red Balau Wood for Your Soffit?

Red Balau 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 Red Balau soffit delivers a service life of 40+ years with minimal maintenance — an optional annual oil treatment preserves the original color, or you can let the Red Balau wood weather to a distinguished silver-gray patina. Red Balau carries a Class A - Low flame spread, making it suitable for wildfire-prone regions where code-compliant materials are required.

The 1x3 shiplap profile creates an overlapping joint with a distinctive shadow line between boards. Popular for siding, accent walls, and architectural cladding applications. All Red Balau lumber is available in Select and Better grade with lengths ranging from 4′ to 20′. For detailed step-by-step instructions, consult our Red Balau installation guide. Long-term care recommendations are covered in our Red Balau maintenance guide.

1x3 Red Balau 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 Red Balau board weighs approximately 9 lbs (0.77 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 Red Balau — the 1,580 lbf hardness prevents direct screwing

Janka Hardness

1,580 lbf

Service Life

40+ years

Durability

Durable

Fire Rating

Class A

1x3 Red Balau Soffit — Frequently Asked Questions

1x3 Red Balau soffit has an expected service life of 40+ years when properly installed and maintained. This is 3-5x longer than pressure-treated pine and 2-3x longer than cedar. Red Balau achieves this exceptional longevity through its natural density (Janka hardness: 1,580 lbf) and Class 1 durability rating, which provide built-in resistance to rot, decay, insects, and fungal growth — all without chemical preservatives.

Use 305 or 316 stainless steel screws for all Red Balau installations — never use galvanized or coated deck screws, which will corrode and stain the wood. Pre-drill every hole using a countersink bit sized for your screw. For 1x3 boards, place screws approximately 1" from each edge and 3/4" from board ends. A combination drill/driver with a clutch setting prevents over-driving into this extremely hard wood.

1x3 Red Balau soffit pricing varies by profile, grade, and board length. 1x3 Shiplap 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, Red Balau's 40+ 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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