greendeal scheme skillsscheme skills &s f ... · 80’s energy world @ milton keynes80’s...

www.greenspec.co.uk

1www.capem.eu14/12/2010 © NGS 2006 Title 1

GreenDealGreenDeal Scheme SkillsScheme Skills

& S f& SpecificationpBrian Murphy GreenSpecBrian Murphy GreenSpec

20/06/2012 1

www.greenspec.co.uk


20/06/2012 © GreenSpec 2012 BrianMurphy GDSchemeSkillsSpec 2

This & contained presentations

• Scribd: www.scribd.com/brianspecman• > collection > • Summit Skills East• http://www.scribd.com/collections/3671253/SectorSkillsEast

• smartLIFE Low Carbon Centre• http://www.scribd.com/collections/3311795/SMARTLife-Hive-

Low-Carbon-Centre

• SusCon Retrofitting• SusCon Retrofitting• http://www.scribd.com/collections/2401889/SusCon-Retrofitting

• RefurbishmentRefurbishment• http://www.scribd.com/collections/2426007/Refurbishment-See-

also-SusCon-Retrofitting

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Scope

• Green Deal• importance of skills• good materials specification.g p


RetrofitRetrofit GreenDeal

Rev 11 %%% (with feedback)Rewards, Rational, Rhetoric,

Restructuring, Risks & Risk Management,


www.greenspec.co.uk


GreenDeal

• Education is everything– We need to re-educate ourselves– For a whole new set of problems

• What we learned 10, 20, 30, 40 years ago are not enoughg g

• Its not just craftsmen, applicators, installersinstallers

• But designers and managers too


Learning Curve Forgetting Curve

70’s & 2 Oil Crisis80’s Energy World @ Milton Keynes80’s Energy World @ Milton Keynes

AJ Energy StudiesFew individuals embraced the learningFew individuals embraced the learning

and carried the batten full time long termMost Forgot

20/06/2012 9

Most Forgot

Professional’sProfessional s ‘College Knowledge’College Knowledge

• Many of us studied 10, 20, 30, 40 years ago

• Diminishing relevanceg

10

Lecturer’sLecturer s ‘College Knowledge’College Knowledge

• Many of them studied 10, 20, 30, 40 years ago

• Diminishing relevance today & they are g y ystill teaching our future professionals

11

Trademan’s Skills Training

• Many of you learned 10, 20, 30, 40 years ago

• Diminishing relevanceg

12

Appropriate skillsAppropriate skills (new or better at them?)(new or better at them?)

• in order to design, specify and install– the right stuff, in the right way

• Builders work in connection with:– services:– drilling, coring & cutting, ducts & sleeves– Insulation, lagging, thermal bridge

avoidance, fire proofing, air tightness acoustic isolation

• no compromisesp20/06/2012 © GreenSpec 2012 BrianMurphy GDSchemeSkillsSpec 13

www.greenspec.co.uk



www.greenspec.co.uk


80% C b80% Carbon Reduction TargetReduction Target


Achieving 80% Carbon R d ti th i !

100% todayCurrent situation

Reduction the expensive way!100% todayCurrent situation

Cut the CarbonPower stations:Power stations:Build more NuclearReplace Coal, Oil, GasAdd Renewables

Quad efficiencyCut waste, CHP, CCHP

20%

EfficiencyReduce demand

Some time whenJTL Just too late

Achieving 80% Carbon R d ti th h d !


Reduction the hard way!100% todayCurrent situation

Cut the CarbonCut the CarbonHouses:Add renewables: PV PV T ST Wi dPV, PV-T, ST, Wind, GSHP, ASHP, WSHP

EfficiencyEfficiencyReduce demandInsulateLow flow tapsLow flow tapsAppliances

LifestyleSome time whenJTL Just too late

LifestyleTurn stuff off

Achieving 80% Carbon Reduction is easy!


Reduction is easy!UsableBuildings Bill Bordass


Halve the demand 50% (-50%)Insulation & AirtightnessThermal breaksPassive Design

( )

Double efficiencyEquipment Appliances

H l h b

25% (-75%)

Halve the carbonIn the supply/mainsGet off mains supply

12.5% (-87.5%)Some time soon

Achieving 80% Carbon Reduction is easy!


Reduction is easy!UsableBuildings Bill Bordass


6.25% (-93.75%)Some time soon

EducationChildren then adults

80% target is as easy as 1 2 3 4

• Demand reduction, – Fabric First, insulation, airtightness,

thermal breaks• Increase Efficiency,

– Kit and controls • Decarbonise,

– Renewables • Behaviour change

– let children take control (with defaults)let children take control (with defaults)20/06/2012 © GreenSpec 2012 BrianMurphy GDSchemeSkillsSpec 20

Design issues:

• 80% reduction in carbon consumption• Passive solar design:

– Capture heat in winter– Ventilate in summer

• Exploit thermal massp• Passive solar roofs with Renewables

20/06/2012 21© NGS+ECH2O 2010 BrianMurphyCathHassellRetrofitting

Personal behaviour: Occupants

• can undo everything• or exceed any interventions• Relish Project has been investigatingj g g• www.relish.org• 12 month report• 12 month report


www.relish.orgg

20/06/2012 © NGS 2008-10 SpecifyingForALowCarbonLifestyle 23

www.greenspec.co.uk


Relish

Insulated

E i d

Insulated

E i d

Worstbehaved

U i l t d

Best behavedUninsulated

Equipped

Behaviour Trained

Equipped

Behaviour Untrained

UninsulatedUnequippedBehaviour

Trained

UnequippedBehaviour Untrained

1 2 43Assumed 1 2 432 3 14Result

20/06/2012 25

Domestic use patterns: impactDomestic use patterns: impact on fabric & serviceson fabric & services

• Demands: morning and evening• Aged population: 24 hours heating

– Winter: cheap Spanish holidays • Fuel poverty: 0 hours• Insulation, Insulation, InsulationInsulation, Insulation, Insulation• Smoothing out the peaks and troughs• Morning sun• Morning sun• Collect heat in day for use in evening

E th l• Expose thermal mass• Avoid drafts

20/06/2012 26

1

www.greenspec.co.uk

www.capem.eu15/03/2011 © NGS 2006 Title 1

RefurbishmentSurveys, Tests

& A l i& Analysis1


Analyse what you have got

• before you start, • don’t assume anything• Or you send the wrong specialistsy g p

– With the wrong equipment – Wrong materialsg– To do the wrong job

• Abortive travel and timeAbortive travel and time– or abortive work


Visual/Manual Inspection

wo

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swo

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External face Vi l i ti

Internal face Vi l i ti

Bri

ckw

Gu

ess

Pla

sVisual inspectionState of repairPredict (Verify later)

Visual inspectionState of repair

Tapping:G

Bricks: Size, bondMortar strength: rub

plaster attachmentCondensation check

Mould check:With kit:Dimensional surveyMoisture content: meter

Olfactory check:Damp and mould

With kit:Moisture content: meter•Damp areasTorch & measure:Air brick inspections

With kit:Dimensional survey

Moisture content

29

Air brick inspectionsThickness

Dimensional survey20/06/2012

Equipped test/assessment

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swo

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E t l f I t l fB

rick

Gu

ess

Pla

sExternal face Visual inspectionPhotographic

Internal face Visual inspection

PhotographicInfrared thermographic:•Hot spots•Anomalies

Infrared thermographicCold spotsAnomalies

Acoustic test•Echo•Radar?

Acoustic testAir leakage test

Moisture contentRadar?Moisture contentAir leakage testDrilling: Endoscope

Moisture contentPipe and cable detection

Drilling: EndoscopeDrilling: DimensionsBed joint rebar detection

ThicknessDimensional survey

30

www.greenspec.co.uk



Equipped test/assessment

do

ws

swo

rk

zin

g

E t l f I t l f

Win

d

Gu

ess

Gla

zExternal face Visual inspection•State of repair

Internal face Visual inspection

BSI Kitemarked glassPhotographicInfrared thermographic:•Special camera for glass

PhotographicInfrared thermographic

Cold spotsp g•Hot spots•AnomaliesAcoustic test

pAnomalies

Acoustic testAir leakage testSpacer Bar infoAcoustic test

•EchoMoisture content frameAir leakage test

Air leakage testMoisture content frame

Spacer Bar infoBSI kitemarks

ThicknessDi i lAir leakage test

Match/lighter flame testDimensional survey

Edge seals/foilsLamination

32

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Flame Reflections

• Match or cigarette lighter• Outside face of glass• No brightly illuminated reflectionsg y• Darker room internally• Hold flame close to glass• Hold flame close to glass• See the reflections from each face of

each glass or film paneeach glass or film pane• Rough guide to thicknesses and cavities


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Th BiThe Bigger ggMEP PictureMEP PictureI t lli t &Intelligent &

GreenGreen20/06/2012 34

1NTEGER Strategy1NTEGER StrategyThe Green Intelligence Basic Building

gSocial Needs

Environmental Systems

Information Systems

Future Social Needs

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Whole House PlanWhole House Plan


'Whole House Plan'

• For singular execution U i d id ll– Unoccupied ideally

– habitable at end of each day if occupied• Or phased execution• Or phased execution

– Churn room by room– Bathroom and Kitchen may be fixed– Bathroom and Kitchen may be fixed– Stairs probably fixed location

• Know the final outcome before you startKnow the final outcome before you start– Don’t undo or redo anything– Know the final details– Make renewable ready, with tails built in

20/06/2012 37

‘Whole House Plan’

• 80% reduction target at endIf it ’t b d i hit• If it can’t be done in one hit:– Phased/zoned approach

Ph• Phases: – Insulation first, EcoBling last

S t & Pi f E Bli i fi t h– Supports & Pipes for EcoBling in first phase• Zoned: room by room

S f d ti b– Spare room for decanting: room by room• Early services:

B t i l t d li i b f kit l t– But insulated linings, before kit, complete linings later20/06/2012 38

Whole House Replanning

• If there is an opportunity to re-plan the use of the rooms of the house take it

• Consider orientation– Consider which rooms what to be on the east,

south and westB d t t t– Bedrooms east not west

– Living rooms south to south westSi lif b th & kit h l t• Simplify bathroom & kitchen layout– Improve proximity to reduce hot water supply

distances & dead legsdistances & dead-legs• Make room for insulation at external walls20/06/2012 39

Whole house insulation

• Insulation continuity: No compromises• Thermal bridging

– Heat will find a way out of there is one– Add thermal breaks– Remove thermal brides– Wrap up thermal bridges

• Thermal bypassyp– Cavities are places for heat to escape to– Insulate all cavities– Insulate all ducts/housings/boxing in20/06/2012 42

Whole house weather tightness

• Draft lobbies on all external doors– Front, rear and side

• Internal or external?– External if possible– Internal may create a cold bridge

• Combine lobby with solar space?– Add solar gain absorbing walls and floorsg g– Add thermal mass to those walls

• Glazing to trap the heat in winterGlazing to trap the heat in winter• Ventilation top and bottom to vent in

summer20/06/2012 43

Services & Void Insulation

• As heating demands tumble• Hot water heat losses become very• Hot water heat losses become very

important• Cold water being warmed becomes g

important• Lagging of pipes seems to be difficult for

l bplumbers• Labour intensive cost cutting opportunity• So fully insulate the voids they run in• So fully insulate the voids they run in

– not the pipes• Every opening up must be insulated before

closing44

E t l ll

Plan

External wall

External wall Limited accessThermal insulationThermal bridgesThrough ducts &

to servicesTo connectTo insulateThrough ducts &

Party wallInternal party wall

To insulateTo make air tight

To maintainInternal party wall thermal insulationDuct Space Party Wall

To maintainTo fix leaksTo replace

insulationnot pipe lagging 45

chimney breast

E t l ll

Plan

External wall

Old G Rated BoilerInsulation

External wall Access to servicesNew A Rated Boiler

Thermal insulation must be firstIf Boiler replaced

To connectTo fire proof

To make air tightIf Boiler replaced earlyOut of sequence

To make air tightTo insulate

Out of sequence workingFraming, Insulation

Avoid removing and refitting boiler and

& LiningsThen Boiler 46

pipes to new insulated lining laterLater Phase

Efficient & effective layout &Efficient & effective layout & designdesign

• Bathrooms and kitchens close proximity• 1 above the other ideally• Boilers and cylinder and cisterns above y

each other• No dead legs• No dead legs• No long runs

Gravity & Thermal action• Gravity & Thermal action• insulated ducts/voids not lagged pipes• Inspected and signed off

20/06/2012 47

Heating: Radiators

• Radiators – Existing radiators: below windows

• External Insulation: Add reflective foil panels to wall– Add reflective foil panels to wall

– Or heat up the thermal mass too much• Internal Insulation:

– Radiators come off and pipes move– Opportunity to move– To internal partitionsTo internal partitions

– But if they are well very insulated external walls it may not make much differencey

20/06/2012 48

Heating: Under floor or in-wall

• Under floor heating– Disruptive to install– Opportunity to insulate the ground floor

• In wall piped heating– Insitu pipes and plaster– Boards with pipes and skim– Less disruptive to install– Internal wall partitions, – Non-domestic: screens, furniture

20/06/2012 © NGS+ECH2O 2010 BrianMurphyCathHassellRetrofitting 49

Ventilation MVHR

• ‘Build tight ventilate right’• Open windows in summer• Open windows in summer• Uncontrolled ventilation: loses heat in

winter• Mechanical ventilation: constant low

power during winter <100 wattsH t ffi i t i ti l >85%• Heat recovery: efficient is essential >85%

• Passivhaus accredited MVHR is suitable• Whole house• Whole house• Whole house retrofit available too• Supply via hall ceiling into roomspp y g• Return via hall, WC, bathroom and kitchen

20/06/2012 50

www.greenspec.co.uk


SMART working

• Customer focus• Comfort conditions• Minimise heat loss, dust, intrusion, , , ,

noise• Working out sequences• Working out sequences• Minimise last step intrusion and

completioncompletion


Ext. Store > Int. WC

• Turn an external accessed store• Into internal accessed WC• Work from outside only: conserve heaty• Rework space, install services, equip• Replace external door with external wall• Replace external door with external wall• Complete as far as possible

Protect everything from dust & damage• Protect everything from dust & damage• Cut through internal wall into house• Form opening and fit door

20/06/2012 52

Kit

che

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WC

Sto

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int

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Ext

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20/06/2012

Sealants

• Occupation during fitrefit

• 1st sealant lineE l i t l t• Early re instalment of sanitaryware b f fi i hbefore finishes applied2nd l t li• 2nd sealant line

• After wall tiling l t

wo

rk

complete20/06/2012 54

Bri

ck

New skills for a new role,

• or training 'to move companies sideways‘

• Refurbishment is not New Build• And the people in one wont transfer

easily to the othereasily to the other• Skills are different

Tasks are different• Tasks are different• New tasks are customer focussed and

need a lot of care to be successful20/06/2012 55

R t fit1

www.greenspec.co.uk

www.capem.eu03/05/2011 © NGS 2006 Title 1

Retrofit: Diversification ofDiversification of

BusinessBusiness Discussion Pod: From New-Build to Retrofit

ICE Retrofit Solutions 17-18 May 2011ywww.ice-retrofitsolutions.com


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Multi trades

• Insulation– Renderers must learn insulated render– Plumbers must learn insulating voids– Electricians must learn insulating voids

• Air tightness– Kitchen fitters must learn air tightness– Bathroom fitters must learn air tightness


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Trigger points

• Insurance repairs: leaks• Right off: Price to replace everything or

the job isn’t worth doingj g• Appropriate responses:

– No Betterment or pay moreNo Betterment or pay more– No insulation: will change the details– Must be challenged or the job is done twiceMust be challenged or the job is done twice


Renewables Ready

• Accommodate kit later• without reworking or wasting anything• Make provision now for securing laterp g• Strengthening?• Penetrations through weather barrier(s)• Penetrations through weather barrier(s)

– Envelop materials– VB VC BM ATL WTL– VB, VC, BM, ATL, WTL.

• Tails secured in place, Pass through insulation accurate fit– Pass through insulation, accurate fit

– sealed to membranes20/06/2012 59

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C t l M tControls Meters MonitorsMonitors


Visible meters in kitchen units


Intuitive Controls


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Human interface

• Visible meters in the work place• Monitors with learning opportunities• Defaults to fall back to

– when you are out of the room or at lunch


Controls with attitudeControls with attitudewill educatewill educate

• You asked me to do one thing• I am working flat out as it is to do it• We wont get there any faster setting it g y g

at 90 dedrees• Now you have contradicted the• Now you have contradicted the

previous instructionI will get there if you stop fiddling• I will get there if you stop fiddling


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AppropriateAppropriate Materials &Materials &

S fSpecificationp20/06/2012 © GreenSpec 2012 BrianMurphy GDSchemeSkillsSpec 65

Appropriate materials forAppropriate materials for specific applicationsspecific applications

• Risks of wrong choices• Science is increasingly important• Value Engineering is posh for cost g g p

cutting• Substitution is inevitable• Substitution is inevitable• Equivalency is essential

But rarely achieved– But rarely achieved– Don’t deny the science

For a quid here or there– For a quid here or there20/06/2012 © GreenSpec 2012 BrianMurphy GDSchemeSkillsSpec 66

Wall Insulation:

• Cavity walls: “easy to insulate”– insulation is easy but wholly inadequate

• Solid walls: “difficult to insulate”– Internal and/or external insulation– Internal insulation and drylining– External insulation and render or cladding– Not difficult, more money

20/06/2012 67© NGS+ECH2O 2010 BrianMurphyCathHassellRetrofitting

(Illustration courtesy of the Architects Journal)Cellular glass (Recycled glass E.g. Foamglas) Long Decrement Delay

Plant based insulation LongDecrement Delay

Slag wool fibre insulation

M di D t D l

68

Medium Decrement Delay

Insulation Thickness

• Different k values– Reducing thickness– High cost of thin insulation

• Reasons for choosing worse k value materials– Carbon Sequestration: plant based– Decrement Delay: dense materialsy– Moisture management: plant & wool based– Wind and Air Tightness: dense materialsg

• T&G jointed– Acoustic performance: dense materials

69

Future Constructions

• Breathing walls– Airtightness layers

• not vapour barriersM i t bl• Moisture permeable

– Wind tight outer layers, • moisture permeable• moisture permeable

– Resistance 5:1 Inner : Outer– Hygroscopic insulation– Hygroscopic insulation

• Absorbs moisture into fibers not into insulation trapped air spacepp p

• Absorbs moisture aways from timber

Approved installers,

• Certification– Persuading the main contractor of the

benefits of skilled installers– Demonstration of the benefits by financial

records• No compromises

– Skills, workmanship and no compromises


Where to thermally insulateWhere to thermally insulate External wall?External wall?

• Cavity walls: in the cavity, – but not enough needs much more

• Solid walls: – Outside: optimum exposed thermal mass

• if architecture permits• If T&CP permits• If not too many services and signs attached

Inside: hides thermal mass– Inside: hides thermal mass• If plan layouts permit

– Kitchens and Bathrooms– If staircase not at external wall

20/06/2012 75

Appearance

• Older properties may have architectural merit

• Terraces may be designed to be seen y gas a terrace

• Crumble details at eaves corners and• Crumble details at eaves, corners and openings may discourage over cladding and external insulationand external insulation

• Internal skirting, cornice, dado, wall linings may discourage internal insulation

20/06/2012 77

Where to thermally insulateWhere to thermally insulate Roof?Roof?

• Lack thermal mass: risk overheating– Add decrement delay to protect from

summer radiant heat from sun• Insulation between rafters: cold bridge

through insulation g– Add insulation above the rafters

• Avoid insulation below the rafterAvoid insulation below the rafter– Prevent cold bridging through insulation

close to inside faceclose to inside face20/06/2012 © NGS+ECH2O 2010 BrianMurphyCathHassellRetrofitting 78

Airtightness

• Dry trade:– Plasterboard and skim can be airtight– But provides cavities for air to flow around

in– Also air leaky at skirting and ceiling level

• Wet trade– Plaster has greater prospect for being

airtight• Wet and dryy

– Plaster parge coats are used before plasterboard

20/06/2012 79

Airtightness Approach

• Brown envelops wont achieve 80% reduction– Testing comes too late– Testing comes too late

• Testing should occur before finishes– Test the building fabric

• But airtightness awareness starts on day one– Design it: Specify who fixes it

Educate the trades– Educate the trades• Blower in user throughout the works that affect

the external envelop and hollow constructionsp• Every drill or cut: air in your face

– You made it, you fix it

20/06/2012 80

Flood Risk: Services:

• High level electrics above flood level• Flood valve to WC• Removable Covers for Air bricks• Removable Covers for external doors,

gates and windowsgates and windows


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Success?

• We can always do better• But we must strive to do it as well as

was intended• Design it, specify it well• Competent: Design Drawings• Competent: Design, Drawings,

Specification, BofQ, no slackConfident about: tender documents• Confident about: tender documents, intention, minimise slack in pricing, competitive price, winning tender

•20/06/2012 83

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Feedback

• These files are created by generalists with a big dollop of green flavour

• These files are updated from time to ptime

• We are not experts so from time to time• We are not experts so from time to time these file may get out of date or may be wrongwrong.

• If you feel that we have got it wrong please let us know so we can put it right

8620/06/2012

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© GreenSpec

• Brian Murphy BSc Dip Arch (Hons+Dist)• Architect by Training• Specification Writer by Choice• Greening up my act since 1999• Founder of www.greenspec.co.ukg p• E [email protected]• Twitter: http://twitter.com/brianspecmanTwitter: http://twitter.com/brianspecman• Scribd: www.scribd.com/brianspecman• Facebook:

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8720/06/2012

greendeal scheme skillsscheme skills &s f ... · 80’s energy world @ milton keynes80’s...

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