Is iroko as good as teak outdoors?

Very comparable in durability. Iroko is generally less expensive than genuine teak.

What are the white deposits in iroko?

Calcium carbonate. Natural and harmless but dulls cutting tools.

Yes, from golden yellow to medium-dark brown over time.

Countertops

outdoor furniture

boat building

joinery

flooring

garden structures

How to Finish Iroko: Complete Staining & Sealing Guide (2026)

Prepared by Lumberama's Wood Finishing Team

|Last updated June 8, 2026|Sources & methodology

Iroko is a durable African hardwood often called African teak for its similar outdoor performance, though the two species are unrelated. Its golden-brown color and natural weather resistance make it popular for countertops, outdoor furniture, and joinery.

Key Takeaways

Iroko is a durable African hardwood often called African teak for its similar outdoor performance, though the two species are unrelated.
Its golden-brown color and natural weather resistance make it popular for countertops, outdoor furniture, and joinery.
Penetrating oil for outdoor furniture; hardwax oil for countertops; water-based poly for interior use; exterior oil with UV inhibitors for outdoor applications.
Interlocked grain with medium to coarse texture.
Diffuse-porous with medium pores.

Wood Characteristics

Interlocked grain with medium to coarse texture. Diffuse-porous with medium pores. 1260 Janka. Golden yellow to medium brown, darkening with age. Moderate tannin. Contains calcium carbonate deposits that dull tools.

Recommended Finishes

Penetrating oil for outdoor furniture; hardwax oil for countertops; water-based poly for interior use; exterior oil with UV inhibitors for outdoor applications.

Preparation Steps

Sand through 120, 150, 180 grit. Calcium carbonate deposits dull sandpaper and blades. Use sharp abrasives. Wipe with acetone before finishing. No conditioner needed.

Application Steps

1. Sand smooth and clean with acetone. 2. Apply oil or finish in thin coats. 3. Allow penetration 10-15 min for oil finishes. 4. Wipe excess. 5. Dry 24 hours. 6. Sand 320 between coats. 7. Apply 2-3 coats.

Maintenance Schedule

Exterior oil: reapply every 6-12 months. Interior poly: recoat every 5-8 years. Hardwax oil countertops: refresh every 3-6 months. Iroko is very low-maintenance outdoors.

Common Mistakes

Not accounting for calcium deposits that dull tools quickly; using film-forming finishes outdoors; not allowing iroko to acclimate before interior installation; applying finish too thickly.

Interior vs Exterior

Interior: Excellent for countertops and furniture. Hardwax oil is ideal for food-contact. Exterior: Outstanding outdoor durability. Penetrating oil to maintain color or leave to weather to silver-gray.