Tag Archive for Conservation

How Many Churches Are Falling Down?

Churches in Ireland retain a considerable significance, they are often the most prominent buildings in their locality and possess architectural, historical and social significance.

Many churches have become neglected or abandoned. And many have suffered from incorrect repairs that were done most of the times with the best of intentions.

How many churches are falling down we don’t know but we know what can be done to avoid further damage:

  • Do use experts. When it comes to repairing a church building getting the right advice is very important. Churches can be amongst the most complex of historic building types and the nature of their conservation often requires specialist advice. It is a false economy not to get proper advice before carrying out work. Bad repair works can be difficult and expensive to undo and can damage a building in the long-term.
  • Do repair the parts of the building that need it. Remember, an aim of good conservation works is to do as much as necessary, yet as little as possible.
  • Do make sure appropriate materials and repair techniques are used.
  • Do make sure all interventions are reversible and where appropriate visually identifiable.
  • Do identify and understand the reason for failure before undertaking repairs.
  • Don’t over do it. Remember, minimal intervention should be the aim.
  • Do engage tradespeople with skills in traditional building methods or experienced conservation professionals.

 

The primary aim of conservation is to prolong the life of something of value. Churches provide unique evidence of our past, they are witnesses to centuries of worship, architectural skill and community history. Let’s do what we can to avoid seeing churches falling down.

Isabel Barros is a RIAI registered Architect accredited in Conservation at Grade 3, please contact us today if you need assistance with your Church project. We can also help in the procurement of grant funding to assist with repair and/or maintenance works.

 

Recommended reading: Old Buildings: Why Things Go Wrong

 

The Power of Pozzolans

 

The use of lime dates back to pre-historic times. Lime is derived from limestone, a sedimentary rock formed mainly of skeletal fragments of marine organisms such as coral and molluscs. Its major materials are the minerals calcite and aragonite, which are different forms of calcium carbonate.

It is generally held that the Greeks began the large scale production of lime-based mortars in Europe and it was from there that the technology spread to Rome.

The Romans early recognized the need for a mortar that could be used under ground and under water – the development of hydraulic mortars is credited to them and the use of Pozzolans was crucial for this.

 

Pozzolana

 

Pozzolans would include volcanic ash or clay brick/tile dust – these would be added to the lime mortar mix to create a faster set and reduce the mortar’s vulnerability to frost and rain.

Vitrivius describe Pozzolans as producing “astonishing results” and he explains the process behind them:

 

The Ten Books on Architecture, Vitrivius

 

Lime Pozzolan binders are obtained by the addition of a Pozzolan (natural or artificial) to the lime while mixing mortar. A natural Pozzolan is a volcanic material, which originally derives from Pozzuoli, an Italian region around Vesuvius. Pozzuoli earth was used in the Roman mortars but other natural Pozzolan are Santorini earth (Greece) and trass (Germany).

Artificial Pozzolans include metakaolin, silica fume, brick dust (preferably low fired brick) and others such as fly ash.

 

Caesarea is the earliest known example to have used underwater Roman concrete technology on such a large scale. Photo by James Cocks www.jamescocks.com.

 

Pozzolans became the backbone of Roman construction and were incorporated in the ‘Roman Concrete’.

Pozzolans of Pozzuoli were used to build ‘La Via Appia’, the Colosseum and the Pantheon of Rome. The fact that the mix could harden under water allowed the Romans to extend their empire along their coastines which gave them a strategic advantage.

Interestingly, lime Pozzolan concrete still has a place in today’s construction technology, not only because of its original characteristics but particularly because it can also offer significant carbon savings and potentially present huge environmental benefits. After all, lime is a remarkably efficient natural absorber of carbon dioxide and it could sequester carbon emissions in a very effective way.

Interesting readings:

 

River House – Kilkenny

 

 

There is something magical about being so close to the water.

From the very first visit we felt this was a unique location and we wanted to make the most of it. The brief asked for additional accommodation to meet current lifestyle demands.

 

 

 

The site presents a number of challenges, including a house over 150 years old, the proximity to a Special Area of Conservation (River Nore),  the existing topography, and so on…

 

 

Early in the design process a strong direction was identified as being the one that would respect the existing wood while taking full advantage of the river views.

 

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The proposal calls for an adaptive reuse of the existing house. The new volumes create an amicable relationship with the old house, mimicking it in a contemporary way.

A new axis is created to link the different elements. This axis regulates the space by creating a clear circulation path that works like a journey of discovery around the house. The light and views are captured and framed to enhance the all experience.

The main living space offers a full open view to the river. Framed views of the surrounding landscape are provided by projecting windows that puncture the main structure.

The concept resolves the complex constraints on site by designing a house that is in harmony with the site and with the existing old house, which dates back to the early 1800’s or possibly late 1700’s.

 

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The main living space offers a full open view to the river.

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Framed views of the surrounding landscape are provided by projecting windows that puncture the main structure.

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See more animations here.

Do you have a similar project? Talk to us today!

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