EXPOL Underfloor Insulation
- Appraisal number 256
- Valid from
- Information provider
- BRANZ Limited
- Information type
- BRANZ Appraisal
EXPOL Underfloor Insulation is an Expanded Polystyrene (EPS) foam board for use as a thermal insulation for timber frame floors.
The insulation is pre-cut and compressed to fit a range of flooring joist spacings.
EXPOL Underfloor Insulation has been appraised as a thermal insulation material:
- for timber framed floors in new or existing domestic and commercial buildings, and
- for use under floors which have an enclosed perimeter foundation as defined in NZS 4246, or
- for exposed subfloors and subfloors with wind exposure when clips are used to secure the insulation.