Subfloor Clearance and Ventilation: Why the Space Under Your Floor Matters

Fil Engineers

Published on: 12/10/2026

A plain-language guide to NZ subfloor clearance and ventilation rules under NZS 3604, and why getting them right protects your floor.

subfloorventilationtimber framingNZS 3604foundations

Fibre-Reinforced Concrete: When It Can (and Can't) Replace Mesh

Fil Engineers

Published on: 10/10/2026

A plain-language guide to fibre-reinforced concrete in NZ: when it can replace steel mesh in slabs, and when it can't under the Building Code.

concretefibre-reinforced concretemesh reinforcementNZS 3604slabs

Fil Engineers

Published on: 04/10/2026

A plain-language guide to when a geotechnical report is needed, and what scala tests, CPT and boreholes actually involve.

geotechnical reportfoundationssite investigationNZS 3604building consent

Fil Engineers

Published on: 04/10/2026

A plain-language look at foundation options for NZ homes — RibRaft-style rafts, piles and footings — and what decides which one fits your site.

foundationsribraftpilesNZS 3604residential construction