The blog

Roger Hunt is an award winning writer and blogger specialising in sustainability, old houses, housebuilding and traditional and modern building materials. He is the co-author of Old House Handbook and the companion volume Old House Eco Handbook.

Beautiful brick

Conservation meets new build, meets sustainability. This was the theme that emerged from yesterday’s Brick Development Association (BDA) Conservation Day at the Building Centre in London.

Dr Gerard Lynch, the acclaimed expert on historic brickwork and master bricklayer, was first to speak, proving that the art of creating fine brickwork hasn’t vanished despite the loss of some 60,000 bricklayers to the First World War. His theme was gauged work, a technique for creating exceptionally high quality brickwork. It relies on bricks that are ‘rubbed’ flat so that they can be laid with very precise and thin joints; they may also be carved into decorative mouldings. The techniques were superbly demonstrated by Emma Simpson of Simpson Brickwork Conservation.

Although bricks have been a principal part of the UK’s building materials since Roman times, they are as relevant today as they have ever been. Architects are embracing bricks and are using them in innovative ways to add texture and layering to buildings. Meanwhile, brick makers are developing new products such as oversized bricks, prefabricating techniques and mortars.

Mortars cannot be excluded from any debate about bricks – they typically form around 18% of the surface of a wall. Until it was supplanted by cement in the early part of the twentieth century, lime was the material traditionally used. It’s now making a comeback, and not just in conservation work. It’s sustainable credentials coupled with is aesthetic appeal are finding favour with architects, as is its flexibility: it considerably lessens the need for movement joints along the length of a wall.

Ian Pritchett, of Lime Technology, is dedicated to pushing the use of traditional lime based building materials into the new build market as ecological alternatives to cement and petrochemical based products. Indeed he’s now supplying large sites with ready to use lime mortars in bulk silos.

His presentation was compelling. He believes lime mortars are a key to making buildings sustainable. Unlike cement, lime doesn’t glue bricks together so, when a building is demolished, lime mortars, renders and plasters are easily cleaned off the bricks allowing them to be reused. Conversely, bricks that have come into contact with cement are generally crushed and turned into low grade materials such as aggregates, consequently the embodied energy and carbon within them is lost.

Throughout the day, the building that was cited as an example of brick at its best was London’s magnificent St Pancras Station. Extensive repairs and a large amount of new build in brick have been undertaken using lime mortars, along with 50 bricklayers and stonemasons and approximately 1.5 million bricks to complete the project. I recommend anyone with an interested in brick or indeed fine Victorian architecture to pay a visit.

The BDA’s, Brick: Building a sustainable resource for the future can be downloaded here.

Image: St Pancras. Credit: BDA

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SPAB Working Party

For the last 25 years conservation experts and volunteer heritage enthusiasts have come together to join the annual Working Party run by the Society for the Protection of Ancient Buildings (SPAB). I went along to join them and created a video about the Working Party at Sullington Manor Farm near Storrington, West Sussex. They were working…

Listed building allure

Listed building allure

Every year, many of the estimated 450,000 listed buildings in the UK change hands on the property market. In England and Wales these properties are designated Grade I, Grade II* or Grade II having being deemed to be of historical, cultural or architectural interest. All buildings built before 1700

Environmental Pocketbook

Environmental Pocketbook

If you’re going to invest in just one book on sustainable, low carbon building I’d strongly suggest that you make it The Environmental Design Pocketbook. Now in its second edition, this useful volume by Sofie Pelsmakers should be essential reading for architects, designers, developers, planners, students, clients and anyone else involved in the construction and operation of buildings….

Fire in old buildings

Fire in old buildings

The devastating fire at the Grade I listed, 18th century National Trust mansion at Clandon Park, Surrey, once again highlights the need to do everything we can to protect old buildings. Whatever the size of the building, there are simple measures that can be taken to reduce the risk of fire, ensure early warning of a…

Adapting old buildings

Adapting old buildings

The need for fresh air and light in buildings is something I’m often talking and writing about because it’s central to creating a good home, but the theme is nothing new. I was reminded of this when I recently visited the King Edward VII Estate, near Midhurst, West Sussex. Here, the former sanatorium is being…

Building lime knowledge

Building lime knowledge

Lime, in the form of mortars, renders, plasters and paints, is a key component of old buildings and essential to their repair – or at least it should be. Today lime-based materials are also emerging into the mainstream and being used within low carbon construction systems, employed in everything from homes to superstores. All this…

Drain problems

Drain problems

A blocked drain is not a pleasant thing to wake up to. What’s worse is the realisation that it’s something that can generally be avoided by doing what I’m always talking about: maintenance. The drainage system is easily forgotten because much of it is hidden away underground but, as with any element of a building, it…

Building remembrance

Building remembrance

Visiting Blood Swept Lands and Seas of Red, the poppy installation at the Tower of London, reminded me that the built environment frequently plays an important part in both remembrance and memory. Each of the 888,246 ceramic poppies that flood the moat of the Tower depicts a death in the British forces in the First…

Materials testing

Materials testing

New techniques and materials aimed at producing low carbon solutions mean this is an exciting time to be involved with new build and retrofit. There are dangers though, in the rush to innovate there may be failures along the way so it’s vital that there’s scrupulously testing and monitoring at all stages. This is why…

Hidden London

Hidden London

Impending development often means there is a chance to step back in time because archaeological investigation may be undertaken as part of the work. This is especially true in London where layers of history have been laid down by successive generations as the city has evolved. Visiting Barratt London’s Landmark Place site close to the…

SPAB Working Party

For the last 25 years conservation experts and volunteer heritage enthusiasts have come together to join the annual Working Party run by the Society for the Protection of Ancient Buildings (SPAB). I went along to join them and created a video about the Working Party at Sullington Manor Farm near Storrington, West Sussex. They were working…

Listed building allure

Listed building allure

Every year, many of the estimated 450,000 listed buildings in the UK change hands on the property market. In England and Wales these properties are designated Grade I, Grade II* or Grade II having being deemed to be of historical, cultural or architectural interest. All buildings built before 1700 Tweet

Environmental Pocketbook

Environmental Pocketbook

If you’re going to invest in just one book on sustainable, low carbon building I’d strongly suggest that you make it The Environmental Design Pocketbook. Now in its second edition, this useful volume by Sofie Pelsmakers should be essential reading for architects, designers, developers, planners, students, clients and anyone else involved in the construction and operation of buildings….

Fire in old buildings

Fire in old buildings

The devastating fire at the Grade I listed, 18th century National Trust mansion at Clandon Park, Surrey, once again highlights the need to do everything we can to protect old buildings. Whatever the size of the building, there are simple measures that can be taken to reduce the risk of fire, ensure early warning of a…

Adapting old buildings

Adapting old buildings

The need for fresh air and light in buildings is something I’m often talking and writing about because it’s central to creating a good home, but the theme is nothing new. I was reminded of this when I recently visited the King Edward VII Estate, near Midhurst, West Sussex. Here, the former sanatorium is being…

Building lime knowledge

Building lime knowledge

Lime, in the form of mortars, renders, plasters and paints, is a key component of old buildings and essential to their repair – or at least it should be. Today lime-based materials are also emerging into the mainstream and being used within low carbon construction systems, employed in everything from homes to superstores. All this…

Drain problems

Drain problems

A blocked drain is not a pleasant thing to wake up to. What’s worse is the realisation that it’s something that can generally be avoided by doing what I’m always talking about: maintenance. The drainage system is easily forgotten because much of it is hidden away underground but, as with any element of a building, it…

Building remembrance

Building remembrance

Visiting Blood Swept Lands and Seas of Red, the poppy installation at the Tower of London, reminded me that the built environment frequently plays an important part in both remembrance and memory. Each of the 888,246 ceramic poppies that flood the moat of the Tower depicts a death in the British forces in the First…

Renovation tale – Part 1

Renovation tale – Part 1

This is the tale of my first major renovation project some years ago… On the table is the surveyor’s report; yellow Post-it notes stick from its pages in such profusion that they no longer have any relevance. Phrases like “needs attention”, “must be thoroughly overhauled” and “a fair amount of dampness” are highlighted by marker… Continue Reading