Project Description

Glazing cost was reduced by increasing averaged U value from 2.6  to 2.9. This was achieved by adding 30% more insulation to the walls and 14% more insulation to the ceilings.

Proposed residential dwelling (class 1a) is located in the city of Windsor. It consists of 3 levels with net conditioned area of 252m2.

Through VURB method we managed to reduce overall glazing U-value by more than 10%.

Here are some more details on the degree of insulation and glazing thermal performance for the Windsor project:

ItemNCC 2019 Reference BuildingProposed Building
FloorNo insulation added to concrete slab on ground floor and basement.
No insulation added to swimming pool floor.
R1.0
added to slab edges.
No insulation added to intermediate concrete floors.
R1.0 added to concrete slab on ground floor and basement.
R1.0 added to swimming pool floor.
R1.0 added to slab edges.
R1.0 added to intermediate concrete floors.
Internal  wallsNo insulation added to the internal walls.No insulation added to the internal walls.
Common wallsR2.24 added to the masonry veneer with 110 mm thick masonryR2.0 added to swimming pool and garage Durisol/Nexcem ICF Block common walls
External wallsR2.24 added to the masonry veneer with 110 mm thick masonry,
Solar absorbance: 0.6 
R2.0 added to all brick veneer, Durisol/Nexcem ICF Block external walls,
Solar absorbance: 0.35
R2.0 added to all timber cladding/battens, Durisol/Nexcem ICF Block external walls,
Solar absorbance: 0.68
R2.0
added to all metal cladding, Durisol/Nexcem ICF Block external walls,
Solar absorbance: 0.73
R1.0 added insulation to swimming pool concrete walls,
No insulation added to basement concrete walls,
Roof/CeilingR4.92 added to the Pitched roof (23 degrees) with 2.4m high plasterboard ceiling,
Solar absorbance: 0.6
R4.74 added to the ceilings of all external roofs,
Solar absorbance: 0.73
External shadingAll external eaves and have been incorporated into the analysis based on available drawings.No new shadings proposed
GlazingGround floor glazing:
U-Value: 3.10, SHGC: 0.45
First floor glazing:
U-Value: 2.40, SHGC: 0.46
Ground floor glazing:
U-Value: 3.01, SHGC: 0.49
First-floor glazing:
U-Value: 3.16, SHGC: 0.54
Triple glazed windows (GL1&2):
U-Value: 1.16, SHGC: 0.3

If you would like to save on your building construction costs, contact our team at Energy Compliance and one of our friendly staff will discuss the opportunities to save in your costs. Energy Compliance offers a unique service guarantee:
If we can’t reduce your construction costs by more than twice the value of our service fee, and you decide not to use our report, then you won’t have to pay the remainder of our invoice.