Name: FOSB Flooring
Brand: KeyFloor
SKU: 1965
Availability: InStock

KeyFloor FOSB is a next-level sub-flooring product, designed to redefine performance. By combining a precision finish with the superior structural integrity of oriented strand board (OSB), KeyFloor FOSB delivers a best-of-both-worlds solution for modern construction.

Engineered specifically for New Zealand’s demanding environments, this panel provides an ultra-smooth substrate for underlays and membranes while maintaining exceptional dimensional stability. Manufactured to exceed AS/NZS 1860.1:2017 standards, it offers a tougher, more reliable foundation that stands up to site conditions and long-term structural demands.

KeyFloor FOSB Tongue and Groove Flooring Panel

High density engineered core provides structural strength and stability.
Withstands up to 12 weeks of weather exposure during build.
Smooth, precision surface ensures a flat, clean finish ideal for underlay, membranes and finishing.
Works with standard adhesives/fixings (Gorilla Grip, Sika Nail Premium)
Manufactured from certified plantation forests using 100% hardwood fibre.

Structural Strength and Stability

High-density engineered core
Meets/exceeds AS/NZS 1860.1:2017 and NZBC B1
Performs under load up to 600mm joist spacing

Moisture Resistance and Site Durability

Manufactured using moisture-resistant resins
Built for NZBC B2 Durability. 50 years Structural.  15 years Non-Structural
Withstands up to 12 weeks of weather exposure during build

Smooth, Precision Surface

Flat, clean finish ideal for underlay, membranes and finishing
Ready-to-install substrate for flooring applications

Sustainability and Safety

Manufactured to formaldehyde emission standards
Complies with F2 Hazardous Materials
FSC-certified production

EASY INSTALLATION

Tongue & Groove, no blocking required
Works with standard adhesives/fixings (Gorilla Grip, Sika Nail Premium)

Compliance and Certification

AS/NZS 1860.1:201
NZBC B1, B2, F2
CodeMark (pending). FSC Certified

KeyFloor FOSB is manufactured to meet or exceed all New Zealand building codes and is intended for use in residential and commercial flooring applications, with up to 12 weeks of weather exposure during construction when installed according to guidelines.

Keyland sources timber products from suppliers operating under PEFC and FSC-endorsed certification systems, ensuring our products originate from responsibly managed forests and transparent supply chains.