Castleward: Cara Morgan 6yrs

The Listed Building owner’s forumThe Listed Building owner’s forum

Keeping the weather out Keeping the weather out Dermot Mac RandalDermot Mac Randal

The inevitability of changeThe inevitability of change

Changing climateChanging climate

Changing needsChanging needs

Changing materialsChanging materials

Changing societyChanging society

Changing functionChanging function

Changing materials Changing materials decay and patinadecay and patina

Changing society Changing society changing valueschanging values

Donato Bramante 1502 Rome

Tempietto

Before you change an historic building you must understand how it Before you change an historic building you must understand how it worksworks

Works be in accordance with the internationally recognised conservation principles Works be in accordance with the internationally recognised conservation principles as defined in the Burra Charter (1981), which has been adopted by ICOMOS (the as defined in the Burra Charter (1981), which has been adopted by ICOMOS (the International Council of Monuments and Sites) and is frequently utilised by International Council of Monuments and Sites) and is frequently utilised by Governments as a measure of ‘best-practice’ conservation. Four principles of Governments as a measure of ‘best-practice’ conservation. Four principles of conservation are contained within the Burra Charter - plus the (equally) important conservation are contained within the Burra Charter - plus the (equally) important principle of sustainable development.  These principles are: principle of sustainable development.  These principles are:

Minimum InterventionMinimum Intervention – Only undertaking that intervention which is essential – Only undertaking that intervention which is essential to preserve a structure or building, i.e. the minimum change to a historic building or to preserve a structure or building, i.e. the minimum change to a historic building or structure in order to retain, whenever possible, the original fabric and character;structure in order to retain, whenever possible, the original fabric and character;

Maximum RetentionMaximum Retention - The retention of the maximum amount of historic fabric; - The retention of the maximum amount of historic fabric; ClarityClarity - It should be possible to distinguish any new work from historic work;- It should be possible to distinguish any new work from historic work; ReversibilityReversibility – Ensuring that any interventions to a historic structure can be – Ensuring that any interventions to a historic structure can be

undone in the future.undone in the future. An additional principle has also been added to the four above – An additional principle has also been added to the four above – SustainabilitySustainability - The principle that any change proposed to a building, supports - The principle that any change proposed to a building, supports

a sustainable future for the structure, or at least does not preclude this.a sustainable future for the structure, or at least does not preclude this.

modern construction modern construction airtight, waterproof , rigidairtight, waterproof , rigid

Breather felts, polyurethanes, sealants

EPDM damp proof membranes, butyl rubber

Polythene sheet, acrylic resin, mastics

Silicone, polysulphide sealants, cement

traditional construction traditional construction mud, wood , stonemud, wood , stone

traditional construction traditional construction mud, wood , stonemud, wood , stone

traditional constructiontraditional construction mud, mud, wood , stone wood , stone

traditional constructiontraditional construction mud, mud, wood,wood, stone stone

traditional constructiontraditional construction mud, wood, mud, wood, stonestone

traditional constructiontraditional construction mud, wood, stonemud, wood, stone

•Absorption

•Deflection

•Dispersal

•Evaporation

•Transpiration

Durability, Sustainability, Performance

ROOFROOF COVERING COVERING

ROOFROOF CHIMNEYS & LEADWORK CHIMNEYS & LEADWORK

ROOFROOF GUTTERS & RAINWATER GOODS GUTTERS & RAINWATER GOODS

ROOFROOF GUTTERS & RAINWATER GOODS GUTTERS & RAINWATER GOODS

WALLSWALLS BRICK BRICK

WALLSWALLS BRICK BRICK

WALLS WALLS STONE STONE

WALLS WALLS MORTAR MORTAR

WALLS WALLS RENDER RENDER

WALLS WALLS RENDER RENDER

WOODWOOD

WOOD HEARTWOOD & SAPWOOD & DURABILITYWOOD HEARTWOOD & SAPWOOD & DURABILITY

WOOD WOOD DECAYDECAY

PAINTPAINT

LIME PUTTY, EARTH PIGMENTS, LINSEED OIL, MILK, (LEAD)

COPING WITH CHANGECOPING WITH CHANGE

COPING WITH CHANGECOPING WITH CHANGE

Castleward: Cara Morgan 6yrs