BU686 Building with 140 mm timber exterior wall framing (September 2023)

Abbreviation
BU686(2023)
Valid from
1/09/2023

Information provider
BRANZ Limited
Information type
BRANZ Bulletin
Format
PDF

Description

There are many ways to increase thermal performance in external walls – for example, a secondary insulation layer or using materials, such as structural insulated panels (SIP).

One way to improve performance is to increase the exterior wall framing depth from 90 mm to 140 mm to accommodate thicker bulk insulation.

The increase in the total upfront build cost will be offset by reduced operating costs (particularly heating costs) for the building’s service life.

Scope

This Bulletin includes:

  1. Introduction
  2. Improvement in thermal performance
  3. Other advantages of 140 mm framing
  4. Requirements in NZS 3604:2011
  5. Specifying 140 mm framing versus secondary insulation
  6. Resources
For assistance with locating previous versions, please contact the information provider.
View on Information Provider website Download this resource (PDF, 482KB)
For assistance with locating previous versions, please contact the information provider.
This resource is not cited by any other resources.

BU686 Building with 140 mm timber exterior wall framing (September 2023)

This document is not CITED BY any other resources:

BU686 Building with 140 mm timber exterior wall framing (September 2023)

Description

There are many ways to increase thermal performance in external walls – for example, a secondary insulation layer or using materials, such as structural insulated panels (SIP).

One way to improve performance is to increase the exterior wall framing depth from 90 mm to 140 mm to accommodate thicker bulk insulation.

The increase in the total upfront build cost will be offset by reduced operating costs (particularly heating costs) for the building’s service life.

View on Information Provider website Download this resource (PDF, 482KB)
BU686 Building with 140 mm timber exterior wall framing (September 2023)
Description

There are many ways to increase thermal performance in external walls – for example, a secondary insulation layer or using materials, such as structural insulated panels (SIP).

One way to improve performance is to increase the exterior wall framing depth from 90 mm to 140 mm to accommodate thicker bulk insulation.

The increase in the total upfront build cost will be offset by reduced operating costs (particularly heating costs) for the building’s service life.

View on Information Provider website Download this resource (PDF, 482KB)
This resource does not cite any other resources.

BU686 Building with 140 mm timber exterior wall framing (September 2023)

This resource does not CITE any other resources.
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