Insulco Vapa-Chek™ is also a proven insulation
product for use in metal clad wall. Many factories,
warehouses and retail outlets benefit from installing
wall insulation – especially on east and west
facing walls that experience significant heat gain in
summer.
The inclusion of Vapa-Chek™ will further improve
the comfort and productivity of those occupying the
building and result in greater reductions in energy
required to condition the space.
Commercial Building Applications
Flat Metal Roof
Vapa-Chek™
With ceiling
(non-vented)
Without ceiling
(1)
Summer
Winter
Summer
Winter
No insulation
R0.6
R0.4
R0.1
R0.1
55mm
R2.7
R2.1
R1.5*
R1.5*
75mm
R3.2
R2.5
R2.0*
R2.0*
100mm
R3.7
R3.1
R2.5*
R2.5*
Domestic
Housing Applications
Pitched Metal Roof With Flat Ceiling
Vapa-Chek™
Summer
Winter
Vented
Non-vented
Vented
Non-vented
No insulation
R0.7
R0.5
R0.3
R0.4
55mm
R2.9
R2.7*
R1.8
R2.1*
75mm
R3.4
R3.2*
R2.3
R2.5*
100mm
R3.9
R3.7*
R2.8
R3.1*
Pitched Metal Roof With Cathedral Ceiling
Vapa-Chek™
Enclosed rafters
(2)
Exposed rafters
(3)
Summer
Winter
Summer
Winter
No insulation
R0.4
R0.4
R0.4
R0.4
55mm
R2.6
R2.0
R1.6
R1.5
75mm
R3.1
R2.5
R2.1
R2.0
100mm
R3.6
R3.0
R2.6
R2.5
1.
R0.2 is attributed to the reflective foil as recommended
in BRANZ Appraisal certificate No.00/016.
which concludes that occupied buildings
will have air circulation adjacent
to the foil laminate so
still air values do not apply.
2. Enclosed rafter systems have an
enclosed airspace
below the Vapa-Chek™ of
at least 100mm.
3. Exposed rafter systems have no airspace,
but it
is assumed that the insulation is
allowed to recover to
its full thickness (i.e. battens
are equivalent to
insulation thickness).
*Endorsed calculations to AS/NZS4859.I
Note: The above calculated system thermal resistance
should be used as a guide only and are based on BRANZ
accepted assumptions and Appendix E of AS2627.I. The
calculations do not take into account thermal bridging
effects at battens, purlins, etc.