WHERE TO INSULATE
The building envelope is the construction elements that separates the internal and external environments, to maintain a level of thermal comfort for the occupants. Construction practices have the potential to impact upon the effectiveness of the building envelope in achieving and maintaining a thermally efficient building envelope. The building envelope is the combination of your home’s exterior walls, ceiling, floor, doors and windows. Insulation plays an important role in providing a thermally efficient building envelope.
Ceiling insulation
Select the highest R value appropriate for your climate to avoid heat loss in winter in cooler climates and heat entry in summer months. Avoid compressing batts and cover the entire ceiling area, whilst adhering to any clearance requirements about ceiling mounted downlights that are not IC rated, or exhaust outlets. To avoid heat loss consider installing IC rated downlights.
Wall insulation
Install insulation to avoid any compression of the batt, services pipes and wirings layed in walls are checked in to the batts, all areas of the external wall surface, including junctions and corners are insulated and choose the batt’s thickness relevant to the construction type. Select and install a pliable building membrane that achieves and maintains good air-tightness around the walls, doors, windows and service outlet points.
Underfloor insulation
Select a batt that provides good insulation for your climate and avoid compressing the batts.
Roof insulation
Select a product appropriate to your climate and site issues and install the product in accordance with the manufacturers instructions. Where the roof is pitched and has an eave sheet then use edge batts that are thinner than ceiling batts to ensure you receive good insulation coverage.
Ductwork
Insulating HVAC ducting will assist in delivering the intended heating and cooling load throughout the building and reduce energy lost into the roof space and the interstitial space between commercial floors. Insulation of ducts will also help to achieve the NCC energy efficiency targets, whilst delivering thermal and acoustic comfort to building occupants.
HEAT FLOW WITHOUT INSULATION
Energy Smart Housing Manual by Sustainability Victoria shows the impact of heat loss and heat entry of uninsulated homes.
Source: https://assets.sustainability.vic.gov.au/susvic/Guide-Energy-Smart-Housing-Manual.pdf pg 50
HEAT FLOW WITHOUT INSULATION
Energy Smart Housing Manual by Sustainability Victoria shows the impact of heat loss and heat entry of uninsulated homes.
Source:
https://assets.sustainability.vic.gov.au/
susvic/Guide-Energy-Smart-Housing-Manual.pdf pg 50