TAS100 – Thatch Fireboard is an environmentally friendly magnesium oxide fire board that out performs cement based boards and regular gypsum plasterboard, due to its superior environmental credentials and performance characteristics.
- Dimensions: 1200x2400x8mm
- Weight: 24 kg per board
- Normal Dry Density (Average): 1,000 kg/m³
- Zero Spread of flame
- Easy to install
- Impact Resistant
- Water Resistant
- Water Vapour Permeable
- Termite, mould and insect proof
- Can be cut, drilled, nailed & screwed with no splitting
- *BS476: Part 3: 2004 – Classification and method of test for external fire exposure to roofs
- *CEN/TS 1187:2012, test 4 – Test method for external fire exposure to roofs
- *EN 13501-5:2005 – Classification report for external fire exposure to roofs
- Water Vapour Permeability Test – The determination of water vapour permeability was undertaken in accordance with BS EN1931: 2000
*These test reports are based on a combined test using a minimum 50mm Thatchbatt®, wire fixing kit and 300mm of thatch, see system information below.
We also have completed a further BS476: Part 3: 2004 test for just the fireboard on its own in which it achieves an AA designation due to this not being tested with thatch.
We recommend that TAS100 Thatch Fireboard be used in conjunction with Thatchbatts® to create a comprehensive fire barrier, meet the criteria of the Dorset Model and increase thermal insulation values.
For example if the underside of the TAS100 Thatch Fireboards are exposed to heat from the living space of the house, then consideration needs to be given to the provision of additional insulation such as Thatchbatts®.
Not installing correct levels of insulation can increase the risk of condensation. Depending on the layout of the living space within the property, consideration should also be given to the provision of a suitable vapour control layer (VCL).
Find out more about the Thatch Fireboard System.
TAS100 Thatch Fireboard is a very easy product to handle despite the apparent rigidity. It must be installed in a professional ‘tradesman – like’ manner to get the desired durability and perfect finish.
TAS100 Thatch Fireboards are positioned on top of the roof rafters with the smooth side facing upwards and fixed down with either nails or screws.
When fixing the boards, the first row is normally laid out horizontally along the eaves and then working towards the ridge, each subsequent row of fireboard is laid in a way so the joints are staggered.
All joints need to be sealed with a bead of intumescent joint sealant. Battens are then fitted horizontally over the top at 300mm centres, with the first batten 125mm from the arris rail.
All the framing and substances used must comply with relevant building regulations and standards.
TAS100 Thatch Fireboard sheets are cut very easily using a carbide tip knife. For rough cuts, place the TAS100 Thatch Fireboard sheet rough side up, scour along the straight line with a knife, then snap the other side to separate the two sheets to get a clean cut.
Finer cuts are achieved by using a saw.
Please review Health & Safety practices regarding dust/fibre development or confined spaces – wear a suitable disposable face mask or other suitable approved respirator.
TAS100 Thatch Fireboard may be screwed or nailed on to the frame as appropriate. Use fasteners suitable for the roof rafters in place, ensuring that the screws have enough length to provide a good grip to the roof rafters, with centres being between 150 and 200mm.
When using self-embedding screws ensure that they do not go more than 0.5mm below the surface of the board, and kept no more than 12mm away from the edges, and 50mm away from the corner of the board. Furthermore, ensure that screws do not over-spin, thus losing grip of the frame.
Please consult your architect or building control officer with regard to the required insulation values and the need for a vapour control layer (VCL).
- All the framing and substances must comply with relevant Building Regulations and Standards.
- All components of this system should be installed in a professional like manner and in strict accordance with our instructions.
- The materials should be kept in a dry and frost free environment before and during installation. Prior to thatching works taking place, the materials should be protected from the elements at all times.
- The components within the Thatch Fireboard System contribute to a part of the overall roof construction. Therefore please consult with your Architect with regard to the performance of the complete roof structure, to include requirements for other components such as vapour control layers etc.
- It is the responsibility of the end-user or his/her agent to gain any necessary permissions in the form of conservation/preservation orders or listed building consents in relation to using any of the products, designs or recommendations listed in this document.
- All products are supplied with Installation Instructions, which will need reviewing before completing any works.
COSHH & MSDS documents are available upon request
For more information on this and other Thatch Fire Protection Products and Systems, please contact us on 08455 20 40 60 or use our enquiry form.