Glasu are also supporting a day for the farming community in Powys on caring for traditional stone barns and outbuildings on Friday 10th September – contact us for further information.
Churches Conservation Trust
Eggsellent! We are over three-quarters of the way through delivering a three year training programme for the Twyi Afon Yr Oesoedd project – a project led by Carmarthenshire County Council, with funding from the Heritage Lottery Fund, the Rural Development Plan and support from the Countryside Council for Wales, Menter Bro Dinefwr and the National Trust. ˆ at the newly converted Training Centre in Llandeilo has included Training delivered by Ty-Mawr lime in building, lime plastering, specifying lime, energy efficiency and paint days. Course delegates on the paint day explored a wide range of traditional and natural paints all compatible with breathing buildings including limewash, soft distemper, silicate paints and the range of eco-paints (chemical, plant-based and mineral) currently available on the market. They finished the day by making some truly natural paints – glair from egg white and pigment from mint (turned bright purple!) and egg tempera from the egg yolk with yellow ochre pigment! Thank you ˆ eggs! Henry for the organic, free-range Ty-Mawr The Energy Efficiency Day in Old Buildings attracted a great deal of attention including from ˆ said “1 in 4 homes in the UK are built of solid wall BBC Radio Wales – Nigel Gervis, Ty-Mawr construction, it is estimated that around 45% of the heat loss in these buildings is through these un-insulated walls. The day therefore focussed on the technical aspects as well as the practical implications of various natural plaster, board and insulation systems that do actually maintain the breathability as well as reducing the energy consumption and hence environmental impact of running these buildings”.
Ty-Mawr ˆ were pleased to be part of a large gathering at Lancing College, West Sussex for the Churches Conservation Trust. Nigel Gervis presented the Ty-Mawr ˆ limecrete flooring system along with Louise Rendall, RIBA architect for St Ann's Gate Architects based in Salisbury. She presented a case study of the flooring system being installed in The Priory Church of St Mary and St Blaise, Boxgrove near Chichester. The building dates from the early twelfth century, major restoration work including the installation of the limecrete floor was completed in November last year. For a photographic record of the restoration work, see www.boxgrovepriory.co.uk Flagstones
Edge Insulation
Tˆy-Mawr Bedding Mortar The glaster® Screed
• ABLE
IN TA
deep grey
stone green
brick pink
yellow ochre
deep orange
Which Lime? At T yˆ -Mawr, we manufacture fat (nonhydraulic) lime plasters and mortars and we stock and sell both the Singleton Birch as well as the Castle hydraulic limes. We are often asked why we have such a wide range of limes, quite simply there is no one lime product that suits all! For anyone who has been on one of our courses or spoken to one of us, they will probably have heard “the specification should come from the building”, it is the needs of the building that should be considered first and foremost not what’s
Impurities which affect setting properties
Breather Membrane The Insulating Layer/ Hardcore
Further courses are planned for the autumn – email mike.scruby@lime.org.uk for details. Not to scale
Levelled & Compacted Ground
Courtesy: CADW and Capps and Capps Lime Hemp repairs at Tretower Court.
available on the shelf or what the builder/plasterer is use to, the trade-offs have to be understood – see graph below. The quicker, harder setting limes have become increasingly popular, they are seen as easier to use or as giving a ‘more guaranteed’ result and there are situations where they are invaluable. However, consideration should be given to the longer term implications when used on/in old buildings both in terms of reduced breathability and flexibility. Examples like the rebuilding of St Teilo’s 13th Century Church at St Fagan’s entirely with fat lime mortars has done much to rebuild confidence in the ‘strength’ of the ‘weaker’ limes! As well as technical performance criteria, we also consider the environmental footprint of all of our products, where we can, we support local and British products (hence minimising the road miles and supporting the local
Moderately Hydraulic NHL3.5
Eminently Hydraulic NHL5 (Z)
Portland Cement
Negligible
Under 12% natural active clay minerals
12 - 18% natural active clay minerals
18 - 25% natural active clay minerals
Artificial mix of limestone plus clay/slag >50%
Vapour Permeability (ng/Pa.s.m) Strong, rapid set poor permeability Soft, slower set good permeability
Set in water (days) 0.5
A IN ABL ST
U
While every effort is made to ensure the accuracy of colour, due to the limitations in the print process variations may occur. Call us for a sample to be sure.
Feebly Hydraulic NHL2
Strength (N/mm≤)
R
For more information download our lime hemp leaflet from our website or call us for a copy – 01874 611350.
Pure/Air Fat Lime Putty
The Limecrete Slab
Breather Membrane
© Ty-Mawr ˆ Lime Ltd 2010
pale grey
Type of lime / binder
LE • SUS
Cronfa Amaethyddol Ewrop ar gyfer Datblygu Gwledig: Ewrop yn Buddsoddi mewn Ardaloedd Gwledig The European Agricultural Fund for Rural Development: Europe Investing in Rural Areas
burnt umber
AB
“A superb day. Very informative and talks delivered with great knowledge. I've fallen in love with lime!!”
cream
STE
ABLE • S
Alan Jones, Master Thatcher, Pembrokeshire Thatch and Carpentry will be demonstrating traditional thatching techniques using local Welsh straw.
PLASTER
natural
PLA
economy). Having lost the last hydraulic lime product in the UK in 2003, we welcomed the Singleton Birch range of products. Darren Scutt, Singleton Birch said “We have been quarrying Lincolnshire chalk for nearly 200 years; today, we produce up to 400,000 tonnes of lime per annum. Whilst undertaking market research into potential production of a British range of hydraulic limes, we quickly became aware of the general consensus that the hydraulic limes available on the market were in many cases stronger than was required. Bearing this in mind Singleton Birch limes are designed to fit at the lower end of each of the NHL categories which are seen as being more appropriate for old buildings. We are pleased to be manufacturing the full range of hydraulic limes in the UK and to be working ˆ who are able to with companies like Ty-Mawr expertly support the products on the ground!”. The good news is that we have a wide range limes now, the bad news is that we have a ˆ we wide range of limes now, but at Ty-Mawr are absolutely committed to supporting our clients in making the right choices for the building and the environment, hence our investment in more Product Advisers (see page 4), and in the production of our Lime Handbook, NBS specification clauses, technical sheets and the website. Did you know? – around 10% of all UK energy consumption is in the production and transportation of our building products!
Hours
For the latest news, case studies, product list, descriptions, current prices, application guides, technical sheets, NBS clauses, quantity calculators and full electronic shopping – visit our new website www.lime.org.uk
E • B REA
We were particularly pleased to have over 30 delegates attend our Caring for Churches and Chapels day in June funded by GLASU – the European Leader programme in Powys. As well as hearing talks on lime in building, caring for buildings from the architects point of view and from the contractors point of view, the group also visited Llanywern Church and Pennorth Chapel to look at how to deal with some of the more common issues and problems caused by using inappropriate materials.
We look forward to welcoming them and will have more news in the autumn issue - to be sure of your copy register with www.lime.org.uk
Nigel Gervis, Operations Director said “we have received more and more interest in producing a premixed self-coloured plaster range; it is popular because of the obvious labour saving benefits on-site – as there is no gauging of components which reduces inaccuracies, it also makes for a cleaner site and ultimately there is no requirement to paint it. It is particularly attractive with the recycled glass aggregate, although if you do not wish to see the glass then that finish can be achieved too”. N O VATIV IN Tyˆ -Maw r
N O VA • IN T Tyˆ -M aw r
We receive more emails and positive feedback about our lime hemp plaster than any other product! Increasingly plasterers as well as conservation architects and organisations are recognising the merits in using a product that behaves in the same way as traditional lime plaster in terms of its breathability, but benefits from the added strength, flexibility and thermal qualities of the hemp fibres. Because the fibres also retain moisture fewer and thicker coats can be applied, it is therefore having a significant impact on reducing labour costs. The most popular application though has been lime hemp plaster onto our wood wool boards for ceilings or timber frame infills.
RE • B AT H
Training contractors for specific sites is getting increasingly popular with days delivered in Kent as well as North and West Wales in the last few weeks alone with more planned.
30 participants will spend the week at Ty-Mawr ˆ Training Centre working alongside thatchers, lime plasterers, timber framers and dry stone wallers. The group will be staying in near by Brecon and will also have tours of Brecon Town, evening lectures from Mr Rory Young, Stone Carver and Conservator and Ned Scharer who has recently completed a 21/2 year conservation project in Westminster Abbey.
We will be launching our new range of nine self-coloured finishes in our glaster® plaster range at the Royal Welsh Show in July.
E
Our work has continued over the last quarter in spreading the word and sharing the skills. Courses at Ty-Mawr ˆ have again been full with additional days being added to our programme of events (see page 4) Training days have also been run for Shepton Mallet THI scheme and the Overlooking The Wye project. We have also delivered Lime CPDs in Derbyshire, Manchester, Chester and several in London, as well as delivering talks at the SPAB Insulating Plasters day and demonstrations and talks at the IHBC event in Shropshire.
Following the visit to Ty-Mawr ˆ last summer by Their Royal Highnesses, The Prince of Wales and The Duchess of Cornwall, we are delighted to be hosting one week of the three week long Summer School for the Prince’s Foundation for the Built Environment.
Hemptastic!
®
E
IV
School Spreading the word, Summer at T y-Mawr ˆ sharing the skills
Product Update Self-Coloured glaster !
TH
Training Update
Ty-Mawr ˆ
Sustainable Supply Chain
courses at Ty-Mawr ˆ Ty-Mawr ˆ has been running specialist courses in traditional and ecological building since 1996 on the site of their head office, formerly a working farm and still the home of the founders of Ty-Mawr ˆ Lime in the heart of the Brecon Beacons National Park. The newly restored grade 2* listed training centre was officially re-opened by Their Royal Highnesses, The Prince of Wales and Duchess of Cornwall in June 2009. Delegates attend from all over the world not only attracted by the quality of teaching but also the ‘backdrop’ – the on-going restoration of the whole farm complex provides an exemplar for what can be done using traditional and ecological materials and technologies.
Introduction to Lime - 2nd July, 2nd September Lime Plastering - 9th July, 12th-13th August (2 day course) Introduction to Lime and Lime Plastering (2 day course) 12th-13th August Drystone Walling - 7th-8th August (2 day course), 15th October Pargetting - 2nd October Decorative Plasterwork - 2nd October We also design and deliver training tailored to meet individual requirements, either at our training centre or on site. Over the last year clients have included contractors, developers, Local Authorities, The National Trust, British Waterways and educational establishments such as the Welsh School of Architecture and the University of Bath. We also offer a RIBA accredited information seminar 'Lime - traditional building products for today's world' which we deliver all over the UK. Please e-mail training@lime.org.uk for further information.
The Demonstration House has again had a busy few months attending events such as Green Horizons and the Greener Homes and Buildings Show. On June the 25th, it went down to Coed D'arcy, the 4,000 eco-home development in South Wales being undertaken by the Prince’s Foundation for the Built Environment on the former oil refinery site. They held an event for potential suppliers of local natural materials and gave everyone the chance to show off what skills there were locally. Ty-Mawr ˆ ran a lime hemp plastering demonstration with some young, local men who are involved in a wonderful project called Positive Directions. They did a demonstration for The Prince of Wales as he toured the exhibition, much to their delight, he stopped to talk to them about what they were doing. Their enthusiasm for the products and associated skills was evident. Afterwards, the Prince of Wales launched the Sustainable Supply Chain that His Foundation for the ˆ said “it was quite a moving Built Environment has been co-ordinating. Joyce Gervis, Ty-Mawr moment in our lives, after 16 years of trying to make these materials valid and credible and so often being rejected for a whole variety of reasons/concerns, it was truly wonderful to hear what was being said and to feel the enthusiasm and support for indigenous businesses like ours who were attending the event. I think we all left feeling a renewed enthusiasm to continue our work and to being part of the networks envisaged through the Sustainable Supply Chain. It is hoped that work at Coed D’arcy will be a much needed catalyst to support and develop the sector in Wales and it will be fascinating to see how it progresses over the next 25 years”.
Summer 2010
Manufacturers & Suppliers of traditional & ecological building materials Manwerthwyr a chyflenwyr deunydd adeiladu traddodiadol ac ecolegol
Products
UK First at Roch Castle!
Manufacturers & suppliers of: • Traditional Fat Lime Mortars and Plasters. • Limewashes and Pigments. • glaster® - Plasters and Mortars. • Lime Hemp Plasters.
New Recruits We are pleased to welcome Bravin Bowker to the team as Business Development Manager, Bravin has worked for an independent builders merchants for the last nine years and so comes to us with an estimating and purchasing background as well as a good knowledge of building construction methods and materials. Greig Wilkinson also joins us as Product and Sales Adviser based in Brecon, Greig has set-up and been running his own accommodation business locally and has previously worked in the building and restoration industry and so joins us with a good practical knowledge. Sam Bloyce joins the manufacturing team as a production assistant and for our busy period over the summer we are also joined by Paul Keenan and ˆ site and Dan Brown at the Ty-Mawr Joe Edwards, carpenter and Issy Fraser as caretaker and hospitality looking after the many visitors to Ty-Mawr ˆ over the coming months.
More hits than most!
All delegates attending lime courses at Ty-Mawr ˆ will get a free copy of “The Lime Handbook” (rrp £15.00).
Special Offer for 2010 – we would like to offer all those who attend our courses a 10% discount off their lime, insulation and paint products if ordered within twelve months of attending a course. See website for conditions.
Caring for buildings…Caring for the environment…Caring for health…
The Ty-Mawr ˆ website – www.lime.org.uk - now receives between 12,000 and 30,000 page requests per day with 3-5,000 page
North Wales Outlet We are delighted that Ned Scharer is resuming his conservation work in North Wales after spending two © Dean and Chapter of Westminster Abbey and a half years conserving the Great Sanctuary Pavement at Westminster Abbey (you may have seen him and his work on the latest Time Team special!). Ned is a lime expert and Scharer Conservation has been using our products to repair heritage buildings in North Wales since 2002. Ned has worked for Ty-Mawr ˆ in the past as product and technical support but is now an independant stockist of our materials, holding a large range of competitively priced products and offering expert help in choosing the right materials for your project. If you want materials or advice and you live in the North Wales area telephone 07970 949 104 or email post@scharerconservation.co.uk. Ned and Sophie have an exciting project ahead of them, relocating home and the business to a Grade II* 16th Century farm in the Conwy Valley, news of developments coming soon!
downloads from 120 countries. No wonder our phones and email inboxes have reached unprecedented levels! The interest in the industry and in natural materials is obviously expanding rapidly, and we feel extremely privileged and excited to be part of it! The most popular searches on the website include: - the quantity calculator (which allows people to work out how much of any one product that they may need) - lime hemp plaster - natural paints and limewash - courses - limecrete floors And new this month – the T yˆ -Mawr blog – this is especially for those of you who have visited the farm and been part of our growth over the years as our story has unfolded – long may there be more to share!
…breathing life into buildings… www.lime.org.uk
• Limecrete (concrete alternative) floors. • Ty-Mawr ˆ Thermafleece® Insulation. • Singleton Birch Hydraulic Lincolnshire Lime - the only British hydraulic lime and Castle Hydraulic Lime. • Aglaia Plant-based Paints - including: ■
Natural emulsions (internal wall paints).
■
Paints, glazes, oils and waxes for wood.
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Paints for metalwork and radiators.
• Beeck’s Pure Mineral Paints. • Building boards/plaster carriers including Reed Mats, Reed Boards, Wood Wool Boards and Woodfibre Boards. • Laths, Wattle and Battens. • Tools and Books.
Services
We at T y-Mawr ˆ are delighted to be working with Acanthus Holden Architects and the client Mr Keith Griffiths on the first ever installation of calsitherm silicate board in the UK at Roch Castle, a privately owned 13th Century castle in the Pembrokeshire Coast National Park. The current owner, Pembrokeshire-born architect Keith Griffiths who is principal shareholder of Aedas Architects is working with local architects Acanthus Holden to realise his vision at this building and 2 others in St Davids - “to match the contemporary luxury in hospitality provided by the international Armani and Bulgari hotels within an historic building” without detracting from any of these iconic Welsh properties’ own unique structure and style. The calsitherm board has been used to upgrade the insulation value of the C13th walls of the castle without compromising their breathability. Mark Vines, Architect said “together we have developed details and specifications that will hopefully provide a solution to the age old problem of how to insulate stone walls whilst still allowing the walls to breathe. ˆ long experience and knowledge have been invaluable”. As ever Ty-Mawr's Calsitherm Silicate Board is just one option offered by T yˆ -Mawr for upgrading the insulation value of solid walls without compromising the breathability - please visit our website or call for a copy of our solid wall insulation leaflet which contains further information.
• Site Visits or meetings with one of our Product Advisers.
Campaign for Wool! Ty-Mawr ˆ is playing an active role in supporting the “Campaign for Wool” at this years Royal Welsh!
• Product Support (including NBS clauses). • Established Courses see back page for dates and for details of a 10% product discount for all course delegates in 2010! • Product Information Days and RIBA accredited CPD seminars. • Visits to Ty-Mawr ˆ for interested groups (by prior arrangement). • Hire of the Training Centre. Email info@lime.org.uk for more information.
Ty-Mawr ˆ
THERMAFLEECE
®
Sheep’s wool thermal and acoustic insulation Building products for today’s world Deunydd insiwleiddio thermol ac acwstig o wlân defaid Cynnyrch adeiladu ar gyfer byd heddiw
News that HRH The Prince of Wales has officially become Patron of the Campaign for Wool has been described as ‘the best thing that has happened to the wool industry for years’ by Ian Hartley CEO of the British Wool Marketing Board (BWMB).
The Prince announced his official commitment at a small gathering of the farming, wool and building industry and retail sectors at the National Woollen Museum in Llandysul, West ˆ were pleased to be amongst Wales on Monday 28th June. Nigel and Joyce Gervis, Ty-Mawr the invited guests because of their commitment to making and promoting the Welsh wool insulation product (Ty-Mawr ˆ Thermafleece). As part of the Campaign, T yˆ -Mawr is working with Second Nature and the Wool Marketing Board to raise awareness of wool and particularly wool insulation at this year’s Royal Welsh Agricultural show. They are encouraging a wide range of businesses, organisations and individuals to come along on Wednesday 21st July to stand CCA796 in the Countryside Care Area to find out more about the campaign as well as their work in the building industry.
…breathing life into buildings… Distribution warehouse: Unit 12, Brecon Enterprise Park, Brecon, Powys LD3 8BT Tel: 01874 611350 Fax: 01874 658502 Training: T y-Mawr, ˆ Llangasty, Brecon, Powys LD3 7PJ Tel: 01874 658000 Fax: 01874 658502 www.lime.org.uk