External Wall Insulation
External wall insulation can prevent up to 15% to 25% winter heat losses and summer heat gains as it reduces radiant, conducted and converted heat transfer. This means that you can reduce your energy usage by up to 25% therefore increasing your energy savings and reducing greenhouse gas emissions. The ideal time to insulate your home is during a new build or renovation project when there is easier access to wall cavities, stud frames and solid walls. There are many external wall insulation products to choose from. Below are various types of external wall insulation products and categories.
Thermal Exterior Wall Insulation
Thermal insulation can be made of either glasswool or polyester. Both insulation types have millions of fibers that create tiny air pockets in the insulation which traps the air and prevents it from passing through the insulation. Additionally, insulation products are made from materials that are poor conductors of heat and do not assist the transfer of heat into and out of your home. When choosing external wall insulation, remember that the R-value describes the level of thermal resistance to heat flow, therefore the higher the R-value the greater the level of insulation.
The following thermal insulation products are suited for external wall applications and available at Pricewise Insulation;
• Knuaf Earthwool External Wall Batts
• Bradford Gold Batts (HP)
• Fletcher Thermal Pink ® Batts
Acoustic Exterior Wall Insulation
Acoustic insulation is much denser than thermal insulation giving the acoustic insulation more effective soundproofing properties. Acoustic insulation also has thermal benefits which keeps your home comfortable in both summer and winter. Installing exterior wall insulation reduces the disturbance of external noises such as traffic, aircraft and neighbours and works by adsorbing and redirecting noise as it travels from outside to inside the house which significantly reduces the impact of loud noises. According to Australian standards, less than 40 decibels of external noise is recommended to enter your living room and less than 35 decibels to enter a bedroom. This ensures that you can comfortably maintain low volume conversations and sleep soundly without being interrupted by external noise. Remember that acoustic insulation is made in varying densities for different sound absorbing performance levels to suite your individual needs.
Acoustic products suitable for external wall insulation applications include;
• Knauf Earthwool Sound Shield
• Fletcher Pink Soundbreak Insulation batts
• Autex Polyester sound solution
• Bradford SoundScreen