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Energy Presentation Warm
- 1. BFRC Window EnergyRatings
- 2. BFRC Window EnergyRatings Agenda BFRC Window Energy Ratings What Are They? The History How To Improve a Window’s Energy Rating The Three Stages The Costs Benefits To The Fabricator Benefits To The Consumer Potential Savings Energy Ratings The Right Time Building Regulations Questions
- 3. Heat loss throughthe window/glass (U value) Solar Gain through the glass (g value) Heat lost through perimeter seals (L50 value, Air Leakage) A Method of rating the thermal performance of replacement window systems of different framing materials. BFRC Ratings are calculated using 3 factors: Calculations carried out by approved BFRC Simulator using thermal simulation software 218.6 x Window Solar Factor -68.5 x (Window U value + Air Infiltration Factor) BFRC Window Energy Ratings What are they?
- 4. BFRC Window EnergyRatings The History 2001 – Group initiated BFRC Simulators First Meeting 2001-2004 – BFRC Scheme development 2004 – BFRC Ratings Launched Scheme launched at Glassex March 2004 2006 – Inclusion in Building Regulations Added as a method of compliance for Part L 2006-2009 - Scheme growth Registrations increase to over 1100 Energy Rated Windows by end 2008:- A rated windows - 280 B rated windows -306 C rated windows - 427 D rated windows - 58 E rated windows – 39 Registered window companies – 204 Current number of registered windows (19/02/2009) - 1353
- 5. BFRC Window EnergyRatings How to Improve a Window’s Energy Rating Multi Chamber Profile Improved Gaskets Non-Metallic Reinforcing Warm Edge Spacer Bar Low Emissivity Glass Argon Gas Low Iron Glass Slimmer Sightlines
- 6. BFRC Window EnergyRatings The Three stages…. Step 1. Specification Fabricator decides on window specification Step 2. Report Extruder produces a BRFC report Step 3. Audit The fabricator is audited by an IA
- 7. BFRC Window EnergyRatings Costs BFRC Registration £300 One off membership fee BFRC Product Fee £200 Annual fee per product registered. e.g. A rated window £200/year A,B,C rated windows £600/year Independent Agency (IA) Audit £ Varies*
- 8. BFRC Window EnergyRatings Benefits Improved Company Image The Green Message Replacing ‘replacement windows’ Opportunity To Market a Premium Product Specification Opportunities
- 9. BFRC Window EnergyRatings Benefits to the consumer? Improving the energy efficiency of their home Save money on heating bills Reduce CO² emissions Add value to the property
- 10. BFRC Window EnergyRatings Potential Savings C rated £ 5,530 ( £160 per year ) and a reduction of 30 tonnes of CO² C rated windows can reduce the amount of energy lost through the windows in an average home by up to 70% and an A rated window by up to 90% ….. That’s the equivalent to running 9 televisions for a year , driving 600 miles in an average sized car or making 34,000 cups of tea! A rated £ 6,580 ( £190 per year ) and a reduction of 60 tonnes of CO²
- 11. BFRC Window EnergyRatings UPVC Energy Ratings All ‘White’ Casement/Tilt & Turn windows can achieve an A rating Vertical Sliding Sash windows can achieve a C rating Reversible windows can achieve a C rating Woodgrain finish windows can achieve a B rating
- 12. BFRC Window EnergyRatings The right time Despite the scheme being launched in 2004 and articles appearing in window trade publications, it is only recently that the general public have been made aware of the existence of Energy Rated Windows. Consumer facing advertising campaigns have been launched within the last 6 months by a number of companies including: Pilkington Glass Everest Anglian
- 13. Building Regulations -Part L April 2010 Revisions New Windows In Extensions Window U Value – 1.8W/m²K Window Energy Rating – D Centre Pane U Value – 1.2W/m²K Replacement Windows in Existing Dwellings Window U Value – 2.0W/m²K Window Energy Rating – E Centre Pane U Value – 1.2W/m²K Windows - Current Regulations (minimum requirement) Windows – Proposed Regulations 2010 New Windows In Extensions Window Energy Rating – C Replacement Windows in Existing Dwellings Window Energy Rating – D
- 14. BFRC Window EnergyRatings Summary BFRC Window Energy Ratings BFRC WER’s are a consumer friendly way of rating a windows thermal performance on a scale of A-G There are now in excess of 1350 rated windows. Ways of improving WER’s include, slimmer sightlines, multi-chamber profiles, warm edge spacer, argon, low e glass, low iron glass The Three Stages – specification / report / audit The Costs – Less than £2000 Fabricator Benefits – Premium product, Improved company image, green message, replacing replacement windows, Specification opportunities Consumer Benefits – Energy efficient home, reduced heating costs, reduced CO² emissions, add value to property Potential Savings – up to £190/year Energy Ratings – White casements = A, woodgrain = B, VSS = C Reversible = C The Right Time – Consumers are now aware WER’s Building Regulations – 2010= Minimum D Rating
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Editor's Notes
- #3 BFRC Window Energy Ratings Benefits to the consumer Improving the energy efficiency of their home Almost half of all the UK’s carbon dioxide emissions come from our buildings and homes? Around 20% of the heat lost from an average home occurs through the windows. The heat lost contributes half a tonne of CO² per home to the atmosphere. Save money on heating bills A homeowner could reduce their household energy bills by as much as £461 per year* if they have single glazed or pre 2002 double-glazing, by switching to Energy Efficient Windows. Reduce CO² emissions If you live in a single glazed house and install Energy Efficient Windows, you could reduce your CO² emissions by 0.30 tonnes or 18% Add value to the property With the introduction of Hip's (Home Information Packs) added importance has been placed on energy efficiency in the home.
- #4 BFRC Window Energy Ratings BFRC Who are they? BFRC Ltd (British Fenestration Rating Council) is a wholly owned subsidiary of the glazing industry’s trade association, The Glass and Glazing Federation (GGF). The BFRC evolved with the aim of producing a method of illustrating the equivalent performance of windows of all frame material types in an easy to understand format, to the end user. Window Energy Ratings What are they? BFRC Energy Ratings are a simple and easy to understand method of calculating the relative energy efficiency of a * replacement window. The windows are rated on an A to G scale, which is consistent with other products such as white goods. The results are calculated using the following information:- • Heat loss through the window/glass (U value) • Solar Gain through the glass (g value) • Heat lost through perimeter seals (Air Leakage) Conventional approaches (such as setting a glass or window U-value) simply assess how much energy a window loses. They do not take into account how much energy a window can gain.
- #6 BFRC Window Energy Ratings How to improve a windows Energy Rating Slimmer Sightlines – More glass = better rating Multi Chamber Profile – The chambers help reduce heat lost by convection Non Metallic Reinforcing – Metal is a conductive material. Steel is almost 300 times more conductive than PVCu Improved Gaskets – Reduces heat lost through perimeter seals Warm Edge Spacer Bar – gives the biggest improvemet of all, up to an extra 10 Energy index points Aluminium 1000 times more conductive that premium warm edge spacer bars Cause of condensation Low Emmisivity Glass – Two types, hard coat (Pilks K) on line coating and soft coat (SG Planitherm Total) off line coating Soft coat gives better results, up to 7 Energy Index Points Argon Gas – a dense inert gas that reduces heat transfer throughthe glass Can improve ratings by up to 9 Energy Index Points. Low iron Glass – A clearer float glass, allows more sunlight into house
- #7 BFRC Window Energy Ratings The Three stages…. Step 1. Specification The fabricator needs to decide on a specification of window that they want to manufacture and a DGU they can produce/source We have a database of hundreds of different glass and glazing combinations which have been simulated. A Report can be issued to a fabricator on any of these options. Step 2. Report Once a specification has been decided upon a report can be issued to the fabricator. This report outlines the manufacturing specification of the window and the glazed sealed unit and the rating that it achieves. This is provided FOC Step 3. Audit The next step is for an IA(Independent Agency) to be appointed to carry out an audit on the manufacture of the window in the report. There is no requirement for a fabricator to be ISO9001 etc. They just need to have some form of FPC (Factory Production Control) in place. The IA will then (with the manufacturer's permission) inform the BFRC of successful completion of the verification process and the BFRC will list the company on their website and allow use of the BFRC Window Energy Rating Label on certified products.
- #8 Costs BFRC Registration £300 One off membership fee BFRC Product Fee £200 Annual fee per product registered. e.g. A rated window £200/year A,B,C rated windows £600/year Independent Agency (IA) Audit £ Varies*
- #9 BFRC Window Energy Ratings Benefits to the fabricator Opportunity To Market a Premium Product With many people being familiar with A rated appliances and light bulbs etc. consumers not only associate A rated with performance but quality too. Improved Company Image Gives fabricators an opportunity to distinguish themselves from their competitors The Green Message Allows the fabricator to market Energy Efficient Windows in a positive way to convey the message to their customers that their windows offer environmental and financial benefits Replacing ‘replacement windows’ Window Energy Ratings give customers a reason to replace their existing windows Specification Opportunities Housing Associations and Local Authorities are increasingly specifying Energy Rated Windows
- #10 BFRC Window Energy Ratings Benefits to the consumer Improving the energy efficiency of their home Almost half of all the UK’s carbon dioxide emissions come from our buildings and homes? Around 20% of the heat lost from an average home occurs through the windows. The heat lost contributes half a tonne of CO² per home to the atmosphere. Save money on heating bills A homeowner could reduce their household energy bills by as much as £461 per year* if they have single glazed or pre 2002 double-glazing, by switching to Energy Efficient Windows. Reduce CO² emissions If you live in a single glazed house and install Energy Efficient Windows, you could reduce your CO² emissions by 0.30 tonnes or 18% Add value to the property With the introduction of Hip's (Home Information Packs) added importance has been placed on energy efficiency in the home.
- #11 BFRC Window Energy Ratings Potential Savings Replacing single glazed windows with energy rated double glazed PVCu windows the following cost and emissions savings could be made over the life of the window. C rated £ 5,530 ( £160 per year ) and a reduction of 30 tones of CO² A rated £ 6,580 ( £190 per year ) and a reduction of 60 tonnes of CO² C rated windows can reduce the amount of energy lost through the windows in an average home by up to 70% and an A rated window by up to 90% ….. That’s the equivalent to running 9 televisions for a year , driving 600 miles in an average sized car or making 34,000 cups of tea!
- #12 BFRC Window Energy Ratings Eurocell Energy Ratings All ‘White’ Eurocell Casement/Tilt & Turn windows can achieve an A rating Woodgrain finish windows can achieve a B rating Vertical Sliding Sash windows can achieve a C rating Reversible windows can achieve a C rating The Eurocell Thermalogik window with PVCu Thermal Inserts is the only double glazed PVCu window on the market that can achieve a BFRC ‘A’ rating without low iron glass
- #13 BFRC Window Energy Ratings The right time Despite the scheme being launched in 2004 and articles appearing in window trade publications, it is only recently that the general public have been made aware of the existence of Energy Rated Windows. Consumer facing advertising campaigns have been launched within the last 6 months by a number of companies including: Pilkington, Everest, Anglian
- #15 BFRC Window Energy Ratings Benefits to the consumer Improving the energy efficiency of their home Almost half of all the UK’s carbon dioxide emissions come from our buildings and homes? Around 20% of the heat lost from an average home occurs through the windows. The heat lost contributes half a tonne of CO² per home to the atmosphere. Save money on heating bills A homeowner could reduce their household energy bills by as much as £461 per year* if they have single glazed or pre 2002 double-glazing, by switching to Energy Efficient Windows. Reduce CO² emissions If you live in a single glazed house and install Energy Efficient Windows, you could reduce your CO² emissions by 0.30 tonnes or 18% Add value to the property With the introduction of Hip's (Home Information Packs) added importance has been placed on energy efficiency in the home.