Saint-Gobain Commitment Chairman and CEO, Pierre-Andre de Chalendar: … Our challenge is to save energy and protect the environment by aiding in the creation of healthy buildings that are comfortable to live in. This significant opportunity comes with an obligation to be above reproach in the way we conduct our business. Sustainability is at the core of Saint-Gobains habitat and construction strategy.
Saint-Gobain Construction Products – South Africa Gyproc - Saint-Gobains Gypsum Activity, supply a complete gypsum-based product range. Isover - Saint-Gobains Insulation Activity; local operations include Glasswool, Mineral Wool and Expanded Polystyrene. Weber - Saint-Gobains Mortars Activity; manufacture tile adhesive and grout, wall and floor coatings, Marbelite and other swimming pool coatings; and an external insulation system for new and retrofitted buildings. PAM - Saint-Gobain Pipelines; manufacture Cast Iron products for the building and civil construction industry. It has the distinction that it manufactures a complete range of manhole covers and frames, storm water gratings and the iconic South African three-legged pot. Norton - Saint-Gobain Abrasives; manufacturer and supplier of performance engineered abrasives for technical and commercial applications, as well as general household and automotive refinishing solutions.
Government - National Energy Efficiency Regulation & Research
Energy Efficiency Standards & regulation - Buildings Energy Efficiency Standard for Buildings - SANS 204 Published (Parts) in Oct 2008 2 nd publication July 2011 National Building Regulation – Sustainability – NBR-X National Building Regulation – Energy Efficiency – NBR- XA Gazetted Sept 2011 Promulgated Nov 2011 Applicable to new plans & renovations needing plan approval Deemed- to-Satisfy standard for NBR-XA – SANS 10400-XA Based on SANS 204 with slightly less stringent requirement Published July 2011 Requirements will be increased within 3 to 5 years
Department of Energy Research Report – OR13554 Before any building standard can be made mandatory, it has to be demonstrated that it will not be inflationary. Dept of Energy commissioned report to investigate if the interventions in SANS 204 complied with this criterion Demonstrated the interventions had a positive LCC (life cycle cost) i.e. Interventions have a pay back in less than the life span of buildings Pay back worked out much shorter than this Insulated ceilings & walls are an energy efficiency intervention with relatively short pay-back periods
Building Envelope 35% Roof Walls 25% Glazing Thermal bridges 10% Ground Floor 10% Summer Winter Principle of insulation Correctly insulating the building envelope in combination with energy saving techniques can control energy losses and reduce energy consumption by up to 78% 10% Air gaps
What does NBR-XA mean in terms of energy saving? Applicable to new plans & renovations needing plan approval New buildings & renovation sections will show energy saving & increased comfort Proportion of new buildings to existing building stock is low Suppressed (depressed) economy = lower proportion of new to existing building stock
How can we redress this? Retrofitting program for existing buildings Insulation & ceiling interventions Performance parameters according to SANS 204 Many countries have programs such as this where energy savings are used to fund or partially fund programs Assist Department of Energy in their strategy of achieving Energy Savings in Buildings (and more) Residential Commercial Others
Interventions Low cost/affordable/RDP/BNG/government subsidized houses do not have ceilings No insulation in roofs/ceilings Many buildings do not have ceiling/roofing insulation Most buildings do not have insulated walls These interventions can be retrofitted – generally easily (depending on design of building) Energy saving (& better comfort) would result
Types of buildings Retrofitting program should be applicable to the same types of buildings that must comply with NBR-XA People/personnel occupied buildings – where driving need for energy is people comfort Heating, cooling, ventilation Residential, Commercial (Offices), Schools, Clinics, Hospitals, Hotels, Hostels, Shops, Shopping Centres etc.
Other Solutions Cavity wall, dry lining R = 1.69 Cavity wall, insulation R = 1.00 Traditional wall R = 0.26 ETICS on steel frame R = 3.76 ETICS on single brick wall; R = 2.21 Lightweight steel frame wall R = 2.50 R-value required for Zone 1 = 2.20 Quoted R-value is subject to thickness of intervention insulation material
Health Nedlac report (2003) – R2.3 billion spent on healthcare due to respiratory diseases caused by poor indoor air quality from the burning of wood, paraffin and other fossil fuels for heat & cooking Increased energy efficiency = better comfort = decreased driver for burning fossil fuels = better health Decreased health costs result
Job Creation In countries with similar programs, it has been measured that the jobs created by retrofitting programs are more than those created by generating energy (electricity) Skilled & semi-skilled jobs Labour from communities implementing program Training On site Facilities such as those at Saint-Gobain or others New training programs = new opportunities for employment
New Building Regulation will go some way to achieving energy saving in building stock To achieve the energy savings goals in the Department of Energy Strategy, a retrofitting program for buildings must be implemented Ceilings & insulation have a good pay back = ideal retrofitting intervention This program can create jobs Improved occupant health will also result.
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