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Posts tagged ‘TAS’

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Chimneys in thatch

There are approximately 60,000 thatched properties in the UK, of which 50-80 suffer a serious fire each year, most of which are completely destroyed. 90% of the homes struck by thatch fire have a combination of a wood burning stove either a flexible chimney liner or no liner at all.

Condition
Chimneys should be checked to ensure the brick or stonework is in good condition. Old or poorly maintained chimneys with loose or missing bricks & mortar and not lined, could allow hot gases and smoke to escape into upper rooms, the loft space or directly onto the thatch. If re-thatching works are taking place and the thatch around the chimney stack is removed, the thatcher will be able to advise on its condition.

Maintenance
Ensure chimneys are regularly swept by an experienced and qualified chimney sweep. This normally needs to be done at least twice a year, however if the chimney is used frequently during the winter period then additional sweeping may be required. Your sweep will be able to offer you further advice. Many chimney engineers and other specialist companies offer a CCTV survey, this is recommended to check the internal condition of the flue.  Again check with your property insurer because some of them have a list of approved companies.

Liner
A number of thatch fires occur as a result of old or inappropriate flue liners, therefore chimneys serving either an open fire  or multi-fuel appliance should be suitably lined. Contact an appropriate professional body such as HETAS so a registered  chimney engineer can review the liner (if already installed) to ensure it is fit for purpose for the type of appliance or fire in  use.

An engineer will also be able to advise on the condition of the liner and recommend on how often it should be  checked. If you are considering installing a wood-burner or similar, again contact HETAS who will advise on the most  suitable appliance and liner for the property.

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U-Values & Condensation in thatch

Thatch Roof Rafters

U-Values & Condensation in thatch
Modern living under thatch has changed in the last 10 to 15 years, with the introduction of modern central heating, double/secondary glazing, power showers and more home owners wanting fully vaulted ceilings. In addition, the requirements and associated recommendations from Building Control and insurance companies see the requirement for fire barriers and increased levels of insulation to be installed within the roof structure.

All these areas can have an effect on the performance of thatched buildings, therefore all components of the roof structure need to be built into U-Value calculations/reports.

U-Values are expressed in units of watts per degree of temperature difference W/m²K. Overall U-Values will vary according to actual thickness and density of the thatch. For example:

  • 300mm thickness of Water Reed – 0.29 W/m²K
  • 300mm thickness of Long Straw – 0.23 W/m²K

For comparison, the standard in Part L of the Building Regulations (2010) for replacement roof insulation at rafter level is 0.18 W/m²K.

A suitable insulation product to help achieve a U-Value of 0.18 would be Thatchbatts® as they are non-combustible, high density slabs which also offer additional protection in terms of fire resistance.

Vapour Control
It is widely accepted in the construction industry that in addition to sufficient levels of insulation, vapour control layers are required to control vapour and reduce the risk of condensation. A correctly fitted vapour check will also play an important part in the way the building continues to perform in the long term.

Bespoke U-Value & Condensation Risk Analysis reports can be generated for thatched roofs and will take into account the design and construction, type of materials used and location within the country.

See the Thatching Advisory Services website for further information and product details.

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Thatching Advisory Services – New Website

Thatched cliff-top shelter overlooking Seaton beach

Thatching Advisory Services (TAS) recently launched it’s new website. The new site contains the latest information on fire protection as well as comprehensive advice on buying, owning and maintaining thatched properties. There is a new section devoted to new builds and extensions which includes detailed information on roof construction and the latest building regulations.

There is comprehensive information on all our products and systems and a new facility to buy the products via our online shop.

Have a look around the site and feel free to contact us with feedback or if you have any further questions or queries.

www.thatchingadvisoryservices.co.uk

 

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Thatchsayf – Thatched Cottage

Thatched Cottage - front

Thatching Advisory Services, whilst taking advantage of the recent warm weather, continued their busy schedule of treating thatched roofs with Thatchsayf fire retardant with a comprehensive application carried out to the roof of the Thatched Cottage  in Shedfield, Hampshire.

The 220m² roof was treated with clear Thatchsayf.

For further details about Thatchsayf fire retardant, please give us a call on 08455 204060.

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Thatchsayf – Stream Cottage

 

 

 

 

 

 

 

 

 

 

 

 

Thatching Advisory Services recently completed the application of Thatchsayf fire retardant to Stream Cottage in Glynde, East Sussex.

The Grade II listed cottage is one of the oldest in the Glynde parish, dating back to 1556.

Prior to the new thatch, the roof structure also had TAS100 Thatch Fireboards and Thatchbatts® installed.

The 127m² roof was thatched by Gavin MacDonald Master Thatcher

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New Meeting room at Thatchers Cider

Thatching Advisory Services - Thatchers Cider

A new meeting room currently being built at Thatchers Cider has been designed to showcase sustainable construction techniques. With that in mind, the Sandford cider maker asked Somerset master thatchers, Dunbar & Bunce to install a new thatched roof.

Passionate about conservation, both Tom and Nigel – together with their team of highly skilled thatchers, provide an extremely knowledgeable and sympathetic approach to both historic buildings as well as modern applications, such as new houses and extensions.

It is being built with a solid oak framework and natural stone walls. Prior to the actual thatching,  the roof  timbers were covered with Thatch Firewall Membrane, which is one of the fire barriers provided by Thatching Advisory Services.

Martin Thatcher, Managing Director says, “Our new meeting room is being built in the heart of a beautiful part of one of our orchards, in a thicket, overlooking a pond. It is an opportunity for us to show how we embrace nature. Beinyears.”

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Dorset Model – Technical guide to planning requirements for thatched properties.

Dorset Model

Thatch is enjoying a resurgence. Architects, builders and owners increasingly acknowledge the advantage of thatch insulation and aesthetic qualities. Recognising this increasing popularity the eight building control authorities throughout the county of Dorset reviewed current building controls for a thatched roof.

The result of these controls will:

  • Either protect the main structure of the building if a fire occurs.
  • Or provide better protection for the roof members if a fire occurs.
  • Require an acceptance to treat the thatch as sacrificial in a fire.

Companies specialising in thatch roof insurance welcome the “Dorset Model” and recognise that it will reduce the premiums paid.

www.thatchingadvisoryservices.co.uk/Dorset_Model.asp

 

 

 

 

 

 

 

 

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Thatchbatt® The Real Thing!! from Thatching Advisory Services.

---- Imitation Flyer - April 2014.

TAS has recently embarked on a campaign to highlight the authenticity of one its products – Thatchbatts® and has sent out information highlighting the levels of testing and approvals that the product has gone through.

In summary, when specifying a non-combustible insulation product for a thatched roof, this needs to been done on a like for like basis and therefore careful consideration should be given to the specification. Thatchbatts® are a vital component of both the TAS-Thatch Firewall & TAS-Fireboard systems.

For more information about Thatchbatts® or other Thatch Fire Barriers, please contact Thatching Advisory Services on 08455 20 40 60.

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Thatching Advisory Services attend NSMT AGM

Rob and Gary from Thatching Advisory Services attended the National Society of Master Thatchers Annual Conference and AGM on Saturday 15th March.

The conference, which was held at the Norfolk Arms Hotel in Arundel, was well attended and included some excellent presentations and discussions. These included the Thatchmark programme, Fire Barriers and Insulation, health and safety with the  NFU and chimney safety.

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Thatching Advisory Services to Attend National Society of Master Thatchers AGM

 

 

Thatching Advisory Services will be attending

The National Society Of Master Thatchers Annual Conference and AGM.

Entitled ‘For the Good of Thatch’

Friday 14th to Sunday 16th March 2014

 

It is to held at The Norfolk Arms Hotel, Arundel in West Sussex.

The agenda will include discussions on: The Thatch Mark Standard, Chimney safety and Fire barriers and insulation.

 

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