Your browser (Internet Explorer 6) is out of date. It has known security flaws and may not display all features of this and other websites. Learn how to update your browser.
X

Posts tagged ‘Fire Retardant spray’

Post

Fire retardants for thatched roofs

Statistically homes with a thatched roof are no more likely to catch fire than those with a conventional tile or slate roof and nationally represents a small percentage of house fires.

However, the results can be devastating and losses can be extremely high as many thatched properties are listed which invariably leads to higher repair costs. Thatch roofs are designed to repel water making them more difficult to extinguish, which can result in increased damage to the entire property.

There are many measures to reduce the risk of fire one of which is treating the roof with a fire retardant spray.

Which retardant?

A water-based solution of fire retardant and intumescent chemicals in a polymer emulsion binder specifically formulated for the protection of thatch roofing. It should be environmentally friendly with no detrimental effect to plants or animals and of course have no adverse reaction to the thatch.

Fire retardants for thatched roofs should not contain any borates or borate-based additives.

Application

Fire retardant sprays should be applied by trained personnel using high-pressure specialist equipment to treat not only the thatch surface but also the thatch stems to ensure a degree of protection for a number of years.

All too often fire retardants are applied to just the outer surface of the roof (often with a garden-type sprayer) only for them to ‘run-off’ due to the liquid repelling nature of the thatch.

The application should be carried out at a certain pressure using a specific tip spraying upwards into the thatch coat work at the angle of the roof ensuring penetration of between 50mm and 75mm.  This will ensure the fire retardant is applied to both the surface and thatch stems.  On an older roof or specific types of thatch, the pressure can be reduced.

When to apply?

There should be no rain for a minimum of four hours prior to applying a fire retardant, ideally the roof needs to have been exposed to direct sunlight for two hours prior to the application.

Due to the high levels of moisture in the air during the winter months the application is normally carried out between the end of March and at the very latest, depending on the long-range forecast, the end of October. After this time, the damp conditions can slow the curing process and leave the roof more vulnerable to the risk of a rain shower during this time.

Why treat a roof?

The latest report from fire investigators, Burgoynes revealed that out of the 103 thatch fires they investigated between December 2008 and July 2013, the most common cause identified was an ejected ember (64), with the next being a chimney fire (11).

http://www.burgoynes.com/fires-thatched-buildings

Which product?

Thatchsayf is a water-based solution containing fire retardant and intumescent chemicals for the protection of thatched roofing.

When applied correctly, Thatchsayf penetrates the stems of the thatch by up to 75mm and will also form a thin protective film on the surface of the thatch stems.

On exposure to heat, Thatchsayf will foam (intumesce) and form a carbonised char, binding the thatch stems together, cutting off the supply of oxygen to the fire and delaying the spread of flame and lowering the radiated heat output.

Thatchsayf is environmentally friendly, can help prevent bacterial and fungal growth and has no detrimental effect on the thatch.

What are the benefits?

  • Reduced insurance premiums
  • Fire penetration delayed for over 30 minutes
  • Can be applied to new or existing thatched roofs
  • Prevents bacterial and fungal growth inc. moss
  • Application is fully certified

A roof treated with Thatchsayf will offer protection from a number of fire risks, including sparks, ejected embers, bonfires, Chinese Lanterns, fireworks and barbecues.

Thatchsayf is tested to BS476: part 3: 2004 and achieved the designation of EXT.S.BA.

Once a roof is treated, the homeowner will be issued with a Certificate of Completion, which can then be issued to Architects, Building Control Officers, Insurance Companies etc. as proof that the thatch has been correctly treated with Thatchsayf. Certification is valid for 5 years before re-application is required.

Many specialist thatch insurance recognise the application of Thatchsayf and will offer a reduction in premiums to those taking a pro-active approach in reducing the risk of fire.

The application of Thatchsayf is undertaken by trained and approved contractors using a high pressure spraying system. This ensures that the correct pressure and coverage is applied to the thatch.

A typical roof should take no more than a day to treat and will dry within 3-4 hours.

Share
Post

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

 

Share
Post

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.

Share
Post

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

Share
Post

Thatchsayf – Bilbrook Cottage

Bilbrook Cottage - front

Thatching Advisory Services have been out and about recently treating a number of thatched roofs with their fire retardant – Thatchsayf.

Mid-July saw Gary go off to Portadown in Northern Ireland where Master Thatchers (North) Ltd recently completed a full re-thatch of the roof at Bilbrook Cottage.

The cottage, which is one of Portadown’s oldest – dating back to 1642 – was extensively damaged by fire in April 2013.

The cottage also had TAS100 Thatch Fireboards and Thatchbatts® installed prior to the thatching taking place.

The 230m² roof was treated with clear Thatchsayf.

Share
Post

Grant Batchelor at Heritage Skills Hub; Thatching Advisory Services Products; advice available.

Grant Batchelor Master Thatcher recently demonstrated the art of thatching at Heritage Skills Hub Event at the NEC Birmingham.

Grant was one of the Heritage Skills Hub members that promoted traditional building crafts and skills,training and courses this weekend.

Grant also discussed the fire safety products available for thatched properties including  TAS100 Thatch Fireboards, Thatch Firewall membrane and Thatchbatts® – all available from  Thatching Advisory Services.

Visitors also had the chance to ask about our Thatchsayf fire retardant spray as Grant is a fully trained approved sprayer.

Click the link below to find out more about the Heritage Hub skills and what they do.

www.heritageskillshub.org/

Share
Post

Thatching Advisory Services presentation to Cheshire Fire and Rescue Service

Cheshire Fire & Rescue Service

Rob Norcott, Director of Thatching Advisory Services, recently gave a joint presentation with HETAS to Cheshire Fire and Rescue Service about the importance of fire safety for thatch roofs.

The presentation, attended by representatives from Cheshire Fire and Rescue Service and the North West regional office of the NFU Mutual, focussed on the common causes of thatch roof fires and the preventative measures and products available.

The attendees were made aware of the issues and contributing factors for thatch fires and the solutions, products and preventative measures available to help reduce the risk in the event of a fire.

The presentation included the use of comprehensive Thatch Fire Protection Systems which are a mix of either TAS100 Thatch Fireboards or Thatch Firewall with our non-combustible Thatchbatt® product.

Rob was also able to explain how the fire retardant spray ‘Thatchsayf’ works by foaming (intumesce) and forming a carbonised char, which binds the thatch stems together, cutting off the supply of oxygen to the fire, delaying the spread of flame and lowering the radiated heat output.

HETAS are the official body recognised by Government to approve biomass and solid fuel domestic heating appliances, fuels and services.

Share
Post

Rob Norcott of Thatching Advisory Services writes article for International Fire Fighter.

Rob Norcott of Thatching Advisory Services was invited to write an article for the International Fire Fighter magazine.

The IFF magazine reports world wide to professionals in municipal and industrial fire and rescue services. The magazine is subscribed to across the globe in 36 countries.

The 5 page piece was centered around the importance of separation in construction on thatched roofs. The article also takes you through common causes of thatch fires and the various systems and preventive measures available.

To read the article in full follow the link below.

www.mdmpublishing.com/mdmmagazines/magazineiff/newsview/1166/thatched-roofs-the-importance-of-separation-in-construction


 

 

Share
Post

Thatchsayf – Spraying season started

Thatching Advisory Services recently took advantage of an unexpected and very welcome break in the weather and carried out its first Thatchsayf fire retardant treatment of 2013.

The project saw TAS carry out the training for Toby Marr and Jack Stiles, thatchers with Greystone Moore Ltd, and treat the thatched roof of The Ley Arms public house in Kenn, Devon.

The 185m² roof, which was treated with ‘clear’ Thatchsayf, was completely re-thatched by Jack and Toby.

Share
Post

Thatchbatt® Installation – new recommendation in addition to friction fitting.

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.

Thatchbatts®
 
 
 
 
 

 

 

 Click the following link to our Thatchbatt® page (pdf  links located at bottom of page).

www.thatchingadvisoryservices.co.uk/Thatch_Batts.asp

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.

Share