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TThe Role of BFRC and FENSA in the UK
Dr Gary MorganBFRC Technical Director
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FENSA
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FENSA
Fenestration Self Assessment SchemeUK Government-authorised Competent Persons Scheme for the replacement of windows, doors and roof lights in England and Wales – set up in 2002.When replacing fenestration products Homeowners must comply with all relevant Building RegulationsHomeowner must obtain a certificate from a CPS or Local Authority Building Control
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FENSA MembersMust demonstrate MMinimum TTechnical Competence: -
What you must knowWhat you must be able to doMTC for Fenestration SurveyingMTC for Fenestration Installing
Subject to annual inspectionSubject to random pre- and post-installation inspectionOffer an insurance backed guarantee
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Approved Document A - Structure
Adequate Structural Support
Bay windows
Lintels
Most common complaint -insufficiently supported bays
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Approved Document A - Structure
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Approved Document B – Fire Safety
Relatively low number of fails
Most cases - incorrect hinge
Few fails - complete removal of fire escapes
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Approved Document B – Fire Safety
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Approved Document C - Moisture Penetration
Voids under sills, sometimes foam & packers visible
Ends of sills & between frame & sill
Poor installation techniques
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Approved Document C – Moisture Penetration
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Approved Document F - Ventilation
2 Ventilation Types: -Purge – rapid air changeBackground - Trickle vents
Emotive subject – customers sometimes request that trickle vents arenot fitted - resulting in failure
Must “make no worse”
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Approved Document F - Ventilation
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Approved Document J –Combustion Devices
Very few failures but taken extremely seriously
AD J failure activates an emergency procedure – the inspector must call line manager immediately
2 areas of concern: -Combustion Ventilation removed but still requiredOpening sashes moved too close to flues
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Approved Document J –Combustion Devices
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Approved Document K – Risk of Falling
3 key areas of concern: -Openings created below 800mm from floor levelBalconies – particularly “Juliet” stylePatio door replacements with Frenchor Bi-Fold where original was at height.
Rare fail – usually down to early registration
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Approved Document K – Risk of Falling
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Approved Document L –Conservation of Fuel and Power
Introduced in 2002 – Main driverbehind fenestration CPSUpdated several times since 2002Compliance 53% WER and 47% U-ValueUw ≤1.6 or WER ≥ C rated
Main reasons for failure are: -Missing Low-EIncorrectly made units
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Approved Document L –Conservation of Fuel and Power
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Approved Document M – Access
Applicable to main access pointof building only
Threshold
“Make No Worse”
Not necessarily specialist low threshold
Very few failures
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Approved Document M - Access
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Approved Document N –Safety Glass
Most common reason for inspection failure
No single reason: -SurveyManufacturer errorInstallationEconomic
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Approved Document N –Safety Glass
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BFRC
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BFRC Mission Statement
To provide an easily-understood means
to allow homeowners to compare the
relative energy performance of
fenestration products, and thereby encourage them to purchase more
energy efficient solutions
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European Energy Labels
In 1992 EU Directive 92/75/EC established an energy consumption labelling scheme
Superseded in 2011 by EU Directive 2010/30/EU
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European Energy LabelsCookersOvensDishwashersRefrigeratorsWashing MachinesTumble DriersTelevisionsVacuum CleanersLight BulbsCarsTyres
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BFRC Rated Products
WindowsRoof Windows
French DoorsSliding Patio DoorsSliding / Folding (Bi-fold) Doors
External Pedestrian Doors (Front and Back Doors)
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BFRC Timeline1997 - Partners in Technology Proposal
2000 - Completion of SAVE II EWER Project
2001 - BFRC established by Dr Robin Kent
2005 - First WER Licences Registered
2006 - BFRC Ltd established as
subsidiary of GGF
2010 - Introduction of SEL
2011 - Introduction of DSER
2013 - Launch of A+ Band for Windows
and Glazed Doors
2015 - Launch of A++ Band and re-banding of
External Pedestrian Doors
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What Are Window And Doorset Energy Ratings?
Not a means of determining the specific energy performance of a given window or door in a given installation, location or orientation.
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What Are Window And Doorset Energy Ratings?
An easily understood metric to compare the energy efficiency of different window and door specifications.
Put simply – “a better ruler”
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BFRC Principles
Fair Accurate
Credible
Accurate ratings are produced as a result of precise thermal simulation of the frame, the
glass and the interaction between the two, carried out by trained and certified simulators
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BFRC Principles
Fair Accurate
Credible
Homeowners can easily compare competing products on
a fair and equitable basis
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BFRC Energy Rating Equation
Standard house
Standard domesticoccupancy
UK climate data forselected locations
The house, occupancy and climate information is used with a computer model to find the UK values of the coefficients A and B
A x g window – B x (Uwindow + Lfactor)The BFRC Rating Formula, where: A = 218.6 B = 68.5
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Applicable Standards
European CE Marking Regulations (BS EN 14351) dictates standards used.
Uw BS EN ISO 10077
gw BS EN 410
L50 BS EN 1026
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Assess standard
window style
1230m
1480mm
Perform Calculation
Assess bands
Check QualityManagement
Issue license
Obtaining a BFRC Energy Licence
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Band Cut-Offs
A++ WER ≥ +20
A+ WER +10 to +20
A WER 0 to +10
B WER -10 to 0
C WER -20 to -10
Units are kWh/(m2.yr)
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Factors Affecting Growth of Window Energy Licences
Prior to 2006, WER scheme was a marketing tool only2006 – WERs Cited in UK Building Regulations (band E Or UW = 1.8)2010 – Building Regulations Revised (band C or UW = 1.6)2013 – Building Regulations Revised (Windows Unchanged, Introduction of Roof Windows and DSER band E or UD = 1.8)
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0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Total WER Licences
Growth of BFRC Licence Registrations
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FENSA Energy Ratings
Technically identical to BFRC scheme
Just branded FENSA
Scheme operated on FENSA’s behalf by BFRC
Independently verified by BFRC
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Detailed Energy Licences Full WER Simulation Report
Specific Frame and IGU Combination
Provides details of: -U valueg valueAir Leakage FactorSpecific Energy Index
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Issues with Detailed Energy Licences
Too prescriptive
Inflexible
No changes of components
Difficult to bring new products to market
Installers wanted greater involvement
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Simplified Energy Licences
A Simplified Energy Licence is a group of simulations within a WER banding
Covers multiple specifications for a given window system
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0
1000
2000
3000
4000
5000
6000
Mar
-11
Jun-
11
Sep-
11
Dec-
11
Mar
-12
Jun-
12
Sep-
12
Dec-
12
Mar
-13
Jun-
13
Sep-
13
Dec-
13
Mar
-14
Jun-
14
Sep-
14
Dec-
14
Mar
-15
Jun-
15
Sep-
15
Dec-
15
Mar
-16
Jun-
16
Effect Of Simplified Energy Licences
Simplified Detailed Total
Migration of Energy Licences
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Substitution of ComponentsSimplified Energy Licences
No substitution allowedNew combinations must be added to scope
Detailed Energy LicencesSubstitution is allowed provided window rating does not decrease
GlassUg must be same or lowerg must be the same or higher
Spacer BarIndicative Psi value must be the same or lower
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Substitution of Components
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BFRC
Cascading of Energy Licences
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Consumer ConfidenceEvery Licence Application
Checked by BFRC Staff
Every Rating CalculationIndependently Verified
Energy Licence HoldersAudited by either Independent Agency or Systems Company(in turn audited by BFRC)
Authorised RetailerAudited by FENSA’s inspection body
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BFRC / FENSA Energy Certificate
“How do I know I’ve gotthe windows I paid for?”
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BFRC Certified Simulators
No restriction other than competence
Initial training and assessment
Ongoing professional development and training
Annual re-certification
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UK coated glass market split: -ε=0.01 used for low U value for new-build and commercial (non-dwelling)ε=0.05 used for WERs for replacement domestic market
Warm Edge spacer bars now dominate market (must pass BS EN 1279)
Uptake of low iron glass – approx. 40%
Introduction of A+ and A++ bands driving adoption of triple glazing
Impact of Energy Licences on Component Suppliers
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Has BFRC Been Successful?
2015 – 78% of rated windows sold exceeded minimum Building Regulations (Part L) requirements (FENSA registered installations)
WERs have driven technical innovation (frames, glass coatings, warm-edge spacers)
Installed Windows By WER Banding
A+ A B C
2010 0% 40% 6% 54%
2011 0% 42% 11% 47%
2012 0% 51% 9% 40%
2013 0% 59% 7% 34%
2014 4% 64% 6% 26%
2015 5% 67% 6% 22%
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Thank You for Listening
Any questions?
BFRC: www.bfrc.org
FENSA: www.fensa.org