Skip to main content

CosyWall Technical Specifications

CosyWall Technical Information

CosyWall™ insulation (CWI) is a full external wall cavity insulation system (EWCIS) for providing thermal insulation to wall cavities lined on both sides. The system includes an assessment of building suitability, licensed installation of water-resistant glass wool insulation and durable external cladding repair.

The insulation is manufactured in selected plants by melting and spinning a blend of inert, natural minerals. It is non-combustible, water-resistant, breathable, won’t settle or shrink and has a trouble-free history of insulating New Zealand external wall cavities since 2002. CosyWall™ is packed in plastic weather tight

Filling Internal Wall Insulation

Product Technical Information

CosyWall™ is designed to provide effective thermal insulation for external timber framed wall cavities constructed before 1990, with suitably fixed internal linings. It is suitable for the following external claddings.

TABLE ONE – THERMAL RESISTANCE COSYWALL® CAVITY WALLS
For a total R-value of:Requires material R-value of:Min thickness (mm)
2.2 (1)
2.8

90

2.6 (2)
2.9

105

3.3 (3)
3.9

138

1) Weatherboard >1950 with nogs. Deduct R0.2 if Sheet cladding.
2) Weatherboard <1950 510c/c, no horizontal nogs
3) Brick with 40mm cavity, no building paper

Total R-values assume 18% thermal bridging as per H1/AS1 & may alter in walls with more or less framing timber.