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Internally insulated metal frame wall – CW007a

Internally insulated metal frame wall - CW007a

Products
Enviroseal ProctorWrap Commercial Wall (CW)
DCT Thermalcheck
Dow Styrofoam Thermal Break strips 

Location
External wall

Material 
Sarking Membrane:
Enviroseal ProctorWrap CW breathable (vapour permeable) membrane with vapour resistance of not more than 0.26MNs/g.

Thermal Break
9mm Dow Styrofoam Thermal Break Strip

Insulation
Approved [glass/polyester] batts

Total R-Value
[Complete]

Support & Fixing
Tightly fit batts between studs. Extend to roof line in gable walls. Fix breathable membrane to outside of frame with 150mm overlaps in accordance with AS4200.2 and the product user guide.

Flashings
Install flashings prior to installing sarking. Prevent entry of water behind the insulation boards.

Vapour Barrier
Fix  DCT Thermalcheck to underside of frame

A well installed vapour barrier may also be required in some cold climates and/or high humidity buildings. Proctor Group Australia recommends that a condensation risk analysis is undertaken to determine if required.

There are a large number of factors that need to be considered in assessing and managing condensation risk. Such factors include the local climate, building use, position, thickness and type of insulation, position and integrity of vapour barriers, and the degree and location of mechanical or passive ventilation. It is highly recommended that designers undertake a condensation risk analysis.