Insulated unheated slab-on-ground concrete floors - Build 205 (2025)
- Abbreviation
- Insulated unheated slab-on-ground concrete floors
- Valid from
- 20/03/2025
- Information provider
- BRANZ Limited,
- Author
- Greg Burn
- Information type
- BUILD article,
- Format
- Website, PDF,
Description
The new H1 regulations provide performance tables for the various types of slab-on-ground concrete floor, which vary according to climate zone. Here’s what you need to know.
Scope
This article includes:
- When using H1/AS1
- Exterior wall types
- Effective wall thickness
- Floor slab A/P ratio
- Slab insulation material
- Slab edge insulation
- Slab-on-ground insulation options with masonry veneer cladding
- Proprietary slab-on-ground floors
- Slab-on-ground floor insulation considerations