Project Description
Glazing cost was reduced by increasing U value from 3.0 to 3.5. This was achieved by adding 11% more insulation to the walls and 100% more insulation to the floors.
Proposed residential dwelling (class 1a) is located in the city of Sorrento. It consists of 4 levels with a net area of 465m2.
Through VURB method we managed to reduce overall glazing U-value by more than 18%.
Here are some more details on the degree of insulation and glazing thermal performance for the Sorrento project:
| Item | NCC 2019 Reference Building | Proposed Building |
| Floor | No insulation added to the concrete slab on ground R1.0 added to the Slab edges No insulation added to the intermediate floors adjacent to conditioned spaces No insulation added to the intermediate floors adjacent to unconditioned spaces |
R1.0 added to the concrete slab on ground R1.0 added to the Slab edges No insulation added to the intermediate floors adjacent to conditioned spaces R0.5 added to the intermediate floors adjacent to unconditioned spaces |
| Internal and common walls | No insulation added to the timber stud walls R2.24 added to the Class 1a masonry veneer common walls with Class 10a building |
No insulation added to the stud walls adjacent to conditioned spaces R1.0 added to the timber stud walls adjacent to unconditioned spaces R2.5 added to the garage and plant common walls, |
| External walls | R2.24 added to the Class 1a masonry veneer with 110 mm thick masonry Solar absorbance: 0.6 No insulation added to the Class 10a 110mm thick masonry veneer external wallsSolar absorbance: 0.6 |
R2.5 added to the rendered thick concrete block walls (excluding basement) Solar absorbance: 0.3 R2.5 added to the ground-adjacent thick concrete block walls, R2.5 added to the rendered thin concrete block walls Solar absorbance: 0.3 R2.5 added to the stud walls with metal cladding on fibre-cement sheet, Solar absorbance: 0.73 No insulation added to the basement entry, garage and plant external concrete block walls Solar absorbance: 0.3 |
| Roof/Ceiling | R4.91 added to the pitched roof (23 degrees) with 2.4m high plasterboard ceiling Solar absorbance: 0.6 No insulation added to the class 10a pitched roof (23 degrees) with 2.4m high plasterboard ceiling Solar absorbance: 0.6 |
R5.0 added to the ground floor Lysaght Trimdek cladding roof Solar absorbance: 0.73 R5.0 added to the first floor new gravel roof – Games room, Bed2, Bed3 & Bed4 exposed roof (excluding plant) Solar absorbance: 0.6 No insulation Added to the plant roof – garage and entry new gravel roof, Solar absorbance: 0.6 |
| External shading | All adjoining structures and features, window shading and shading devices have been incorporated into the analysis based on available drawings | No new shading proposed |
| Glazing | Lower ground floor glazing (10% of total glazing): U-Value: 5.66, SHGC: 0.75Ground floor glazing (50% of total glazing): U-Value: 3.49, SHGC: 0.65First floor glazing (40% of the total glazing): U-Value: 1.85, SHGC: 0.52 |
Lower ground floor glazing (10% of total glazing): U-Value: 3.96, SHGC: 0.61Ground floor glazing (50% of total glazing): U-Value: 3.61, SHGC: 0.62First floor glazing (40% of the total glazing): U-Value: 3.61, SHGC: 0.62 |
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.