Project Description

Glazing cost was reduced by increasing averaged U value from 2.6 to 2.7. This was achieved by adding 33% more insulation to the walls and 17% more insulation to the ceilings.

Proposed residential dwelling (class 1a) is located in the city of Lysterfield. It consists of 3 levels with net conditioned area of 270m2.

Through VURB method we managed to reduce overall glazing U-value by more than 4%.

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

Item NCC 2019 Reference Building Proposed Building
Floor No insulation added to the concrete slab on ground (garage, entry, living, kitchen, laundry, pantry)

No insulation added to the concrete slabs on ground (garage/store)

No insulation added to the concrete slab on ground (Bedrooms, Laundry, Rumpus, Study)

R1.0 added to the slab edges

R1.65 added to the intermediate floors above garage and store

No insulation added to the intermediate floors adjacent to the conditioned spaces

No insulation added to the upper floor walk in robe and Ensuite intermediate floors

Ground floor suspended floor modelled as slab on ground

R1.0 added to the concrete slab on ground (entry, living, kitchen, laundry, pantry)

No insulation added to the concrete slabs on ground (garage/store)

R1.0 added to the concrete slab on ground (Bedrooms, Laundry, Rumpus, Study)

R1.0 added to the slab edges

R1.0 added to the intermediate floors above garage and store

No insulation added to the intermediate floors adjacent to the conditioned spaces

R2.0 added to the upper floor walk in robe and Ensuite intermediate floors

R2.5 added to the living/dining external suspended floor

Internal and common walls Internal walls:

No insulation added to the timber stud walls adjacent to conditioned spaces

No insulation added to the timber stud walls adjacent to unconditioned spaces

R2.24 added to the stairs common wall with the garage

No insulation added to the timber stud walls adjacent to conditioned spaces

R2.0 added to the timber stud walls adjacent to unconditioned spaces

R3.0 added to the stairs common wall with the garage

External walls R2.24 added to the Class 1a masonry veneer with 110 mm thick masonry
Solar absorbance: 0.6No insulation added to the Class 10a masonry veneer with 110 mm thick masonry
Solar absorbance: 0.6
R3.0 added to the concrete-rendered brick veneer walls (WT01a)
Solar absorptance: 0.6R3.0 added to the white-rendered brick veneer walls (WT01b)
Solar absorptance: 0.35

R3.0 added to the Weathertex weatherboard walls (WT02)
Solar absorptance: 0.35

R3.0 added to the lightweight spandrel panels (WT03)
Solar absorptance: 0.35

R3.0 added to the basement stairs external concrete block walls (WT05b)
Solar absorptance: 0.6

R1.0 added to the below grade concrete walls (adjacent to the ground – excluding garage/store)

No insulation added to the black-rendered brick veneer walls (WT01c)

No insulation added to the garage and store new/retaining concrete block walls (WT04-WT05)
Solar absorptance: 0.6

No insulation added to the garage/store below grade concrete block walls (adjacent to the ground)

Roof/Ceiling R4.92 added to the pitched roof (23 degrees) with 2.4m high plasterboard ceiling
Solar absorbance: 0.6No insulation added to the Class 10a roof
Solar absorbance: 0.6
R5.8 Added to the flat ceilings of the skillion roofs with Colorbond cladding
Solar absorptance: 0.6No insulation added to the store roof under terrace,
Solar absorptance: 0.6
External shading All external eaves and have been incorporated into the analysis based on available drawings. Rumpus glazing (W10): Adjustable shading device capable of restricting at least 80% of summer solar radiation.

Study glazing (W17): Adjustable shading device capable of restricting at least 80% of summer solar radiation.

Glazing Ground floor glazing:
U-Value: 2.32, SHGC: 0.44Upper floor glazing:
U-Value: 3.05, SHGC: 0.62
Dining and living glazing (W02-W03-W04-W05-W06):
U-Value: 2.40, SHGC: 0.41All other glazing:
U-Value: 3.18, SHGC: 0.59

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.