Retrofitting Historic Buildings - Westminster City Council

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For further information see:• Factsheet produced by English Heritage:http://www.climatechangeandyourhome.org.uk/live/insulating_timber_ground%20floors.aspx• ‘An Introduction to Low Carbon Domestic Refurbishment’Construction Products Association(2010)http://www.constructionproducts.org.uk/publications/dbfiles/Domestic%20Refurbishment%20Revised11010%20(low%20res).pdf• Information from the Energy Saving Trusthttp://www.energysavingtrust.org.uk/In-your-home/Roofsfloors-walls-and-windows/Floor-insulation20
Internal solid wall insulationDoesBuildingRegs apply?YesDoes Part L1B require this?http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADL1B_2010.pdfPart L1B requiresimprovements to thermalelements, such as walls whererenovation work is taking placeon more than 50% of thesurface of that element (or 25%of the whole building envelope)Note: exemptions for buildingswhich are:1. listed2. in conservation areas3. of architectural andhistorical interest,4. of traditional construction.These buildings should‘improve energy efficiency asfar as is reasonably practicable.The work should not prejudicethe character of the hostbuilding or increase the risk ofdeterioration of the buildingfabric or fittings’.English Heritage haveproduced guidance onapplying part L to historicbuildings 18Permissions and consents...Disruption Risks Unlisted within a Listed buildingconservation areaHigh - this willprobably bebest donewith a vacantproperty orwhen a wholehouse isbeingrefurbishedas the kitchenandbathroommay needrefitting.Very high-Specialistadvice andinstallationrequired dueto possiblemoisture andventilationproblems.Internal alterationsof an unlistedproperty in aconservation areadon’t requireplanningpermission.Would require listedbuilding consent forchanges affectingthe building’scharacter as one ofspecial architecturalor historic interest,such as materials,details and finishes.This may begranted in limitedcircumstances,such as whereoriginal finisheshave already beenlost.Unlisted outside aconservation areaInternal alterationsof an unlistedproperty don’trequire planningpermission.21
Page 1 and 2: Retrofitting Historic Buildingsfor
Page 3 and 4: ContentsIntroduction 4Limitations o
Page 5 and 6: This guidance will be of most use t
Page 8: Article 4 DirectionsFor some buildi
Page 12 and 13: competent person’ scheme exists.
Page 14 and 15: MeasuresThis section outlines measu
Page 16 and 17: Installing insulation in existing r
Page 18 and 19: Floor insulation (suspended timber
Page 22 and 23: Solid wall insulation can be a way
Page 24 and 25: For further information see:• Fac
Page 26 and 27: Solid wall insulation can be a way
Page 30 and 31: Advantages: This can improve the th
Page 32 and 33: Disadvantages: It can be more expen
Page 34 and 35: A significant amount of heat is los
Page 36 and 37: Boiler upgradeDoesBuildingRegsapply
Page 38 and 39: Heating controlsDoesBuildingRegs ap
Page 40 and 41: Micro Combined Heat and Power (CHP)
Page 42 and 43: Ground source heat pumpsDoesBuildin
Page 44 and 45: Air source heat pumpsDoesBuildingRe
Page 46 and 47: For further information see:• ‘
Page 48 and 49: Solar PV panels convertenergy from
Page 50 and 51: Solar thermal panelsDoes BuildingRe
Page 52 and 53: Living roofDoesBuildingRegsapply?Is
Page 54 and 55: Case Study: 15 Passmore Street, SW1
Page 56 and 57: Case Study: The Flagship HomeArchit
Page 58 and 59: SummaryMeasureUnlisted, within acon
Page 60 and 61: Westminster’s Planning PolicyThis
Page 62 and 63: Notes and References1 Westminster H
Page 64 and 65: 35 Town and Country Planning (Gener

Retrofitting Historic Buildings - Westminster City Council

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