Posts tagged ‘Thatchbatt® fitting’
TAS recently carried out the application of its Thatchsayf Fire Retardant Spray System to a new build property, which is part of the Maudslay Park development – a new Retirement Village in the Warwickshire village of Great Alne. The thatched property is intended to be a shop for the village and provide warden accommodation. The roof which is approximately 210m² – 22 thatchers’ sq was thatched by Parkinson Master Thatchers.
Prior to the thatching, the roof benefited from the installation of the Thatch Fireboard Protection System comprising TAS100 Thatch Fireboards and 100mm of Thatchbatts®.
The application of the fire retardant was partly carried out using a boom lift (cherry picker). TAS operatives are licenced to operate boom and scissor lifts, which can often reduce the time it takes to treat a roof and also ensures close contact with the thatch. This also allows for greater control and coverage when treating the roof. You can see from this image where the Thatchsayf has already been applied.
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.
Thatching Advisory Services (TAS) were recently involved in an unusual but unique thatched project in Liverpool.
The Lighthouse in Formby saw the majority of the building, including the sides being completely thatched.
The project saw TAS working closely with the main contractor – Kirklake Developments and D-K Architects to advise on and provide the most suitable and comprehensive fire barrier system for the building.
After consultation and submission of test reports, it was deemed that the newly designed and tested ‘TAS Thatch Fire Membrane System’ would be the most suitable system to use for the project.
The TAS Thatch Fire Membrane System, which incorporates Thatch Firewall Membrane and Thatchbatts® is tested to BS476: Part 3: 2004 and CEN/TS 1187:2012, test 4, as recommended by Building Control – Approved Document B.
Thatching Advisory Services (TAS) recently provided its Thatch Fireboard System for a new property in Milton Keynes. The thatched property was built by Acorn Construction (Newbury) Ltd as part of the Rivar New Homes Maltings Farm development comprising eleven new properties and three barn conversions.
Graham Knowles of Acorn and Rob Norcott from TAS worked closely together on the project, which saw the new Thatchbatt® wired fixing system being built into the design. This was then submitted to the NHBC who gave its approval for the system.
Our Thatch Fireboard System is made up of: TAS100 Thatch Fireboard, Thatchbatts®, intumescent joint sealant and the wired fixing system. This combination produces a system that will meet the current insulation and fire requirements for building control and also meets the performance criteria of the Dorset Model.
The roof was thatched by Jason Duggan using combed wheat reed.
Thatching Advisory Services have update their Installation instructions for Thatchbatts®
Since the release of the 100mm Thatchbatt® with its increased fire protection and thermal values, we have seen most architects selecting this over the traditional 50mm Thatchbatt®. Both 50mm and 100mm Thatchbatts® are designed to be friction fitted between rafters set at 400mm centres. Although the 100mm slabs, in most cases, are self supporting we still recommend that the consideration be given to the following one of the wired fixing systems as detailed on our website.
Click the following link to our Thatchbatt® page (pdf links located at bottom of page).
Although Thatchbatts® offer increased fire protection, where permitting they should be used in conjunction with either Thatch Firewall or Thatch Fireboard to create a comprehensive fire barrier system. For further thatch advice please go to our website.