Roof spacer systems from CSR Bradford Insulation are designed to help newly constructed commercial buildings meet the minimum energy efficiency standards mandated by Section J of the Building Code of Australia (BCA). Insulation plays a key role in achieving these energy-efficiency requirements.
While buildings will receive approval by meeting the minimum requirements of the BCA, long-term benefits can accrue to the building by adopting best practice and choosing optimal insulation through better control of condensation, dampening noise and controlling heat flow in and out of the building.
Improvements in insulation levels in a building also contribute to higher reductions in energy consumption, which is a critical factor in Green Star accreditation.
With the introduction of mandatory disclosure in commercial buildings in 2010, higher insulation levels may also assist in delivering higher rental returns and building valuations. This in turn will contribute to future-proofing the building against potential changes in legislation and building codes.
Choice of insulation is the starting point for achieving the best practice in addition to the BCA Section J requirement. The non-combustible inorganic fibrous insulation does not increase the fuel load in the building while offering high levels of thermal protection, noise dampening and condensation control.
A critical factor that needs to be considered during the building design phase but is often overlooked is that of the interface between the roof system and the insulation. The design must allow the correct amount of space under the roof sheet to ensure that the insulation can recover to its design thickness and provide its rated insulation value.
Failure to provide sufficient space will result in compression of the insulation between the roof purlin and the sheeting above, causing degradation of the performance characteristics of the insulation and subsequently reducing the full system rating.
Thermal bridging is also another consequence of insulation getting compressed by lack of sufficient space since the reduced space between the purlin and the roof sheet will allow increased heat gain or loss due to the highly conductive nature of the building materials.
Bradford roof spacer systems are designed to raise the roof sheet above the purlin, creating a defined space between the safety mesh and the roof sheet for the insulation, which will ensure the full recovery of insulation thickness.
Roof spacers therefore enable projects to surpass the minimum required levels of thermal performance. A well designed roof space system can be tailor-designed for different insulation heights to ensure the building design offers high thermal protection without impacting material or labour costs.
Bradford Insulation supplies a range of highly functional roof spacing systems with depths corresponding to specifically developed insulation blanket heights, designed to meet the BCA Section J requirements.