WALLS & ROOFS looks at the regulations and specifications surrounding the installation of insulation and thermal control systems.
According to the South African National Building Regulations’ website (www.buildingregulations.co.za), legislation is primarily concerned with the need for all buildings to be designed, constructed and equipped so that in the event of a fire, the occupants or people using the building will be protected.
It also aims to promote materials that minimise the spread and intensity of fire in the building and to other buildings. Regulations ensure that adequate means of access and equipment for detecting, fighting, controlling and extinguishing such fires will be provided.
According to the website, the requirements of the Act will be satisfied if the design, construction and equipment of buildings comply with SANS 10400 Part T and satisfy the local authority. The Act also specifies several offences that owners of buildings need to avoid, including the need for fire extinguishers that comply with SANS 10105.
According to the Thermal Insulation Association of South Africa (TIASA), any style of home or building can be designed to be energy-efficient.
Passive design does not require mechanical heating or cooling. Buildings that are passively designed take advantage of natural energy flows to maintain the conditions required for human thermal comfort.
There are many factors that contribute to smart design. Some are present in the planning and design process, while others may be added after construction. According to TIASA’s Guide to energy-efficient thermal insulation in buildings, the key principles of smart design include:
• Designing for climate.
• Appropriate siting.
• Orientation – daytime living areas with large north-facing windows to receive unobstructed winter sun.
• Internal planning to create zones which reduce the amount of energy required for heating and cooling.
• Windows which are appropriately orientated and sized with protection from winter heat loss and summer heat gain.
• Adequate thermal mass to stabilise indoor temperatures.
• Adequate thermal insulation in roofs, ceilings, walls and floors.
• Good draught proofing.
• Cross-ventilation for summer cooling.
• An efficient hot water system and fittings, located close to the user station.
• Efficient lighting and appliances.
• Landscape design that assists in modifying the microclimate.
Get more information by downloading TIASA’s Guide to energy-efficient thermal insulation in buildings online at www.aaamsa.co.za.
Full thanks and acknowledgement are given to www.buildingregulations.co.za and TIASA for the information given to write this article.