This depends on the system used and direction that the heat travels. Reflective insulation products are effective at resisting radiant heat but less effective with convective heat. As a basic “rule of thumb” reflective wall wraps (when combined with a non-ventilated still air space in the stud void) can add around R1.1 in summer.
Insulation's ability to resist heat flow (prevent heat leaking in or out) is described as its 'R-value'. Incorrect installation, such as compressing or damaging insulation, or leaving gaps between sheets or batts, can result in a product not achieving its specified R-value.
It’s important that you understand what R-values mean because they can result in you getting the best product for your home. Understanding the R-value for your home is regarded as the best way to compare the different products that are out there in the market.
R-values are the measuring tool we use to rate the level of thermal resistance. Essentially, the higher the R-Value the more effective the insulation is.
All new homes being built in Australia have certain energy efficiency levels they must meet as required by their state. By taking into account the R-values of the product this will help you comply with what your state requires.
Ceiling batts are too thick and not rigid enough to be fitted into studs without compression (and subsequent R-value). Wall batts have a water repellent added whereas ceiling batts don't.
Installing acoustic insulation in external walls when you're building your home is the easiest way to effectively reduce unwanted outside noise from heavy traffic, aircraft or noisy neighbors. Also, installing acoustic insulation in interior walls or between first floor ceiling and second storey floor can reduce sound power by up to 75%.
This depends very much on the operating temperature of the system, the desired level of control of heat loss (or gain), maximum surface temperature for personnel protection and the requirements for condensation control. In addition, the reflective properties (surface coefficient) of the insulation cladding also affects heat loss and surface temperature at a given insulation thickness. If you are specifying for an industrial project see our minimum thickness calculator. Find details of this in ICANZ’s free Handbook
Yes, it can. Although, there are some loose fill products that will exceed the weight recommendations by plasterboard manufacturers.