Conservation and Restoration of Clear Coatings on Furniture and ...

Conservation and Restoration of Clear Coatings on Furniture and ... Conservation and Restoration of Clear Coatings on Furniture and ...

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40 5. Has longevity, though once deteriorated can be removed easily ong>andong> safely without damage to underlying veneer, MDF 6. Does not discolour timbers or contaminate timber preventing use ong>ofong> alternative finishes in future Despite explaining this above scenario to many conservators, conservation scientists ong>andong> paint chemists, a solution was not forth-coming. The coating removal process was tackled by some with the confidence they could in time develop a removal solution ong>andong> process within the set parameters, the difficultly lies in creating an economically viable system for large scale operations, potentially by non-conservators. The second question was more contentious, choosing a product ong>andong> technique with which to then re-finish. These questions were out ong>ofong> field for many conservators used to older materials. The common response was that shellac has all the desired properties bar that it is not resilient to moisture ong>andong> is particularly vulnerable to cleaning chemicals. I agree that shellac may indeed be one solution, but one would hope that with today’s technology a modern material could be made to emulate the characteristics ong>ofong> shellac with the advantage ong>ofong> being more resilient, more stable with no discolouration. The modification ong>andong> adaptation ong>ofong> shellac has been toyed with on various levels however, further work is required to prove that these processes do in fact enhance ong>andong> improve the properties ong>ofong> shellac. Synthetic resins The use ong>ofong> natural resins in painting conservation has been superseded over the last decades by the use ong>ofong> synthetic coatings such as methacrylate resins, Paraloids B72 ong>andong> B67, ketone resins MS2A ong>andong> Laropal K resins. These synthetic resins have been implemented to overcome the discolouration ong>andong> insolubility problems ong>ofong> natural resins. Once polymerised, natural resins ong>andong> oils can be difficult to remove, endangering the painting itself. The developments ong>ofong> varnish removal techniques ong>andong> the use ong>ofong> re-coating with synthetic resin have slowly crossed over ong>andong> have had positive implications for furniture conservation, though these resins do not ong>ofong>fer an absolute solution as they are too song>ofong>t, brittle ong>andong> do not withstong>andong> wear ong>andong> tear. Paintings differ from furniture in that the majority ong>ofong> furniture remains functional ong>andong> requires protection not just against environmental factors but from mechanical abrasion ong>andong> accidental damage. Paint companies ong>andong> material scientists researching coatings are the most likely people to find solutions to these problems which are too complex ong>andong> too large for most conservators to tackle alone. Even conservation scientists may be years behind the game when it comes to working with the latest materials ong>andong> techniques in the area ong>ofong> manufacturing coatings. Certainly paint companies at this moment focus on producing products for longevity ong>andong> resilience, ong>ofong>ten designed to out last the object itself. ong>Conservationong> friendly coatings with trialled removal systems, repair ability ong>andong> maintenance ease with coatings that can be top-coated, have not been given much thought. To develop coating system with such characteristics may have not been previously viable, but in today’s climate where the awareness ong>ofong> conservation is growing, ong>andong> when the economics ong>ofong> removing ong>andong> replacing finishes every ten to twenty years is cost restrictive or environmentally unacceptable, perhaps there could be room for a commercial product.

41 4.0 Recommendations Presently my findings are inconclusive, though I am confident solutions will be found that are conservation minded ong>andong> economically viable. Until these can be implemented, the best approach we can take is to learn from the mistakes ong>andong> misfortunes ong>ofong> others. It is highly important to communicate to ong>andong> to educate people ong>ofong> relevance so they better understong>andong> issues surrounding the use ong>ofong> clear coatings for furniture ong>andong> interior timbers in places ong>ofong> cultural significance. 4.1 Government –Federal, state ong>andong> local government Governments, whether federal or local invest heavily in local building infrastructure. The Federal Government particularly have been responsible for constructing Australia’s most iconic structures. These buildings represent the Australian people on both a national ong>andong> international level. Design ong>andong> function ong>ofong> these ‘show’ buildings are highly considered ong>andong> budgets for such structures reflect their national importance. These structures ong>andong> interiors have been designed ong>andong> constructed to become Australia’s lasting iconic buildings. Federal Parliament House was built around a brief to last 200 years. When governments decide to build such structures they need to look further ahead for longevity, cultural investment ong>andong> economic management. Parliament House may last 200 years as a concrete shell, however the materials employed in the construction ong>andong> manufacturing ong>ofong> the interior are in serious trouble less than 20 years after completion. The economic cost on maintaining ong>andong> conserving materials doomed to fail from the outset is a huge financial burden. And for the objects which were destined to become iconic art works ong>ofong> national significance, these may in fact not survive long enough to become significant at all. The budgets that are cut ong>andong> money saved now ong>ofong>ten indicate that money will need to be spent later, ong>ofong>ten at a greater cost ong>andong> in some instances at the loss ong>ofong> what may have been a lasting memorial to our young nation. The economics ong>ofong> treating objects that will eventually fail is one that requires consideration, ong>andong> is an easy point to demonstrate. Choosing the correct materials at the design stage is fundamental to the longevity ong>ofong> the object or building. Governments, architects, artists ong>andong> manufacturers should be conscious ong>ofong> the potential long term issues when choosing materials. Examples ong>ofong> material failure are commonly accessible, ong>andong> are a powerful demonstration tool. If objects are designed with correct material choices, then these problems will be minimised. Governments must be presented with the economic argument for good conservation policy. By choosing the correct materials in the design ong>andong> building processes, (which may well be more expensive initially), maintenance ong>andong> on going conservation costs will be minimised. A good example ong>ofong> this was the decision not to use Ultra-Violet (UV) filters in the glass at New Parliament House. For an added 10% to the glass budget, inbuilt UV filters may have prevented UV damage to thousong>andong>s ong>ofong> square meters ong>ofong> timber floors, to furniture, to carpets ong>andong> textiles. Without figures on hong>andong>, I am sure the repair ong>andong> replacement ong>ofong> these materials has exceeded the additional 10% many times over. And this is only in the first 20 years ong>ofong> the buildings life. At a large expense, UV films have now started to be installed throughout Parliament House.

41<br />

4.0 Recommendati<strong>on</strong>s<br />

Presently my findings are inc<strong>on</strong>clusive, though I am c<strong>on</strong>fident soluti<strong>on</strong>s will be found that are c<strong>on</strong>servati<strong>on</strong> minded<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> ec<strong>on</strong>omically viable. Until these can be implemented, the best approach we can take is to learn from the<br />

mistakes <str<strong>on</strong>g>and</str<strong>on</strong>g> misfortunes <str<strong>on</strong>g>of</str<strong>on</strong>g> others. It is highly important to communicate to <str<strong>on</strong>g>and</str<strong>on</strong>g> to educate people <str<strong>on</strong>g>of</str<strong>on</strong>g> relevance so<br />

they better underst<str<strong>on</strong>g>and</str<strong>on</strong>g> issues surrounding the use <str<strong>on</strong>g>of</str<strong>on</strong>g> clear coatings for furniture <str<strong>on</strong>g>and</str<strong>on</strong>g> interior timbers in places <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

cultural significance.<br />

4.1 Government –Federal, state <str<strong>on</strong>g>and</str<strong>on</strong>g> local government<br />

Governments, whether federal or local invest heavily in local building infrastructure. The Federal Government<br />

particularly have been resp<strong>on</strong>sible for c<strong>on</strong>structing Australia’s most ic<strong>on</strong>ic structures. These buildings represent the<br />

Australian people <strong>on</strong> both a nati<strong>on</strong>al <str<strong>on</strong>g>and</str<strong>on</strong>g> internati<strong>on</strong>al level. Design <str<strong>on</strong>g>and</str<strong>on</strong>g> functi<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> these ‘show’ buildings are highly<br />

c<strong>on</strong>sidered <str<strong>on</strong>g>and</str<strong>on</strong>g> budgets for such structures reflect their nati<strong>on</strong>al importance. These structures <str<strong>on</strong>g>and</str<strong>on</strong>g> interiors have<br />

been designed <str<strong>on</strong>g>and</str<strong>on</strong>g> c<strong>on</strong>structed to become Australia’s lasting ic<strong>on</strong>ic buildings. Federal Parliament House was built<br />

around a brief to last 200 years.<br />

When governments decide to build such structures they need to look further ahead for l<strong>on</strong>gevity, cultural investment<br />

<str<strong>on</strong>g>and</str<strong>on</strong>g> ec<strong>on</strong>omic management. Parliament House may last 200 years as a c<strong>on</strong>crete shell, however the materials<br />

employed in the c<strong>on</strong>structi<strong>on</strong> <str<strong>on</strong>g>and</str<strong>on</strong>g> manufacturing <str<strong>on</strong>g>of</str<strong>on</strong>g> the interior are in serious trouble less than 20 years after<br />

completi<strong>on</strong>. The ec<strong>on</strong>omic cost <strong>on</strong> maintaining <str<strong>on</strong>g>and</str<strong>on</strong>g> c<strong>on</strong>serving materials doomed to fail from the outset is a huge<br />

financial burden. And for the objects which were destined to become ic<strong>on</strong>ic art works <str<strong>on</strong>g>of</str<strong>on</strong>g> nati<strong>on</strong>al significance, these<br />

may in fact not survive l<strong>on</strong>g enough to become significant at all. The budgets that are cut <str<strong>on</strong>g>and</str<strong>on</strong>g> m<strong>on</strong>ey saved now<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g>ten indicate that m<strong>on</strong>ey will need to be spent later, <str<strong>on</strong>g>of</str<strong>on</strong>g>ten at a greater cost <str<strong>on</strong>g>and</str<strong>on</strong>g> in some instances at the loss <str<strong>on</strong>g>of</str<strong>on</strong>g> what<br />

may have been a lasting memorial to our young nati<strong>on</strong>.<br />

The ec<strong>on</strong>omics <str<strong>on</strong>g>of</str<strong>on</strong>g> treating objects that will eventually fail is <strong>on</strong>e that requires c<strong>on</strong>siderati<strong>on</strong>, <str<strong>on</strong>g>and</str<strong>on</strong>g> is an easy point to<br />

dem<strong>on</strong>strate. Choosing the correct materials at the design stage is fundamental to the l<strong>on</strong>gevity <str<strong>on</strong>g>of</str<strong>on</strong>g> the object or<br />

building. Governments, architects, artists <str<strong>on</strong>g>and</str<strong>on</strong>g> manufacturers should be c<strong>on</strong>scious <str<strong>on</strong>g>of</str<strong>on</strong>g> the potential l<strong>on</strong>g term issues<br />

when choosing materials. Examples <str<strong>on</strong>g>of</str<strong>on</strong>g> material failure are comm<strong>on</strong>ly accessible, <str<strong>on</strong>g>and</str<strong>on</strong>g> are a powerful dem<strong>on</strong>strati<strong>on</strong><br />

tool. If objects are designed with correct material choices, then these problems will be minimised.<br />

Governments must be presented with the ec<strong>on</strong>omic argument for good c<strong>on</strong>servati<strong>on</strong> policy. By choosing the correct<br />

materials in the design <str<strong>on</strong>g>and</str<strong>on</strong>g> building processes, (which may well be more expensive initially), maintenance <str<strong>on</strong>g>and</str<strong>on</strong>g> <strong>on</strong><br />

going c<strong>on</strong>servati<strong>on</strong> costs will be minimised. A good example <str<strong>on</strong>g>of</str<strong>on</strong>g> this was the decisi<strong>on</strong> not to use Ultra-Violet (UV)<br />

filters in the glass at New Parliament House. For an added 10% to the glass budget, inbuilt UV filters may have<br />

prevented UV damage to thous<str<strong>on</strong>g>and</str<strong>on</strong>g>s <str<strong>on</strong>g>of</str<strong>on</strong>g> square meters <str<strong>on</strong>g>of</str<strong>on</strong>g> timber floors, to furniture, to carpets <str<strong>on</strong>g>and</str<strong>on</strong>g> textiles. Without<br />

figures <strong>on</strong> h<str<strong>on</strong>g>and</str<strong>on</strong>g>, I am sure the repair <str<strong>on</strong>g>and</str<strong>on</strong>g> replacement <str<strong>on</strong>g>of</str<strong>on</strong>g> these materials has exceeded the additi<strong>on</strong>al 10% many<br />

times over. And this is <strong>on</strong>ly in the first 20 years <str<strong>on</strong>g>of</str<strong>on</strong>g> the buildings life. At a large expense, UV films have now started<br />

to be installed throughout Parliament House.

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