Protect Your Thatched Roof with Thatchsayf

Micon Thatchsayf is applied to both the interior and exterior of the thatch roof. Once applied to the interior it remains effective until the roof is disturbed by re-thatching. The interior does not have to be treated again before that. Certification for the exterior of the roof is for either 5 or 7 years depending on the climatic conditions and geographical area of the structure. Coastal areas, areas of high humidity have certification valid for 5 years. Inland highveld areas get certification for 7 years. It is important to note though that any brushing and combing, rethatching, and roof disturbance will require reapplication to the effected sections. We do recommend that all maintenance work be done to SANS 10407 (Thatch Roof Construction Specification) specifications just prior to application to take advantage of the whole certification period.

Micon Thatchsayf neither extends nor shortens the life span of the thatched layer. The single most important aspect of a long lasting thatched roof is ensuring it has been constructed to SANS 10407 and that the grass or reed has been sourced and cut at the correct time of the year. There are some products on the market who say that their products extend the life of the thatch. That should be a reg flag to any prospective clients. Always request copies of weathering test reports from respected testing agencies for products who make claims around lifespan extension.

Micon Thatchsayf has been tested to British Standard (BS476 PART 3), it has been tested all sections of the ASTM E108 test method by the Firelab. This subjects test panels to :

• Intermittent Flame Exposure Test
• Burning Brand Test
• Spread of Flame Test
• Flying Brand Test

   

In 2025 Micon Thatchsayf has undergone testing as per SANS 10400 PART – T : 2024, which requires products to be tested to SANS 10177 Part 12. This test method is based on the ASTM E 108 test, but adapted for the South African market. It will subject panels to :

• Intermittent Flame Exposure Test
• Burning Brand Test
• Spread of Flame Test
• Flying Brand Test

   

It is important to request test reports from all thatch protection companies and ensure that their tests comprehensively include ALL sections of the above and not just one or 2 of them.

Having a certified fire retardant that has been tested to national stardard requirements, can be the difference between being paid out by insurance in event of a fire and not. SANS 10400 – T Fire, requires thatched roof fire protection systems be tested to the SANS 10177 -12. Beware of companies advertising conformance to the standards who have not been tested as required. It could be the most expensive mistake you make.

On exposure to heat the first stage of protection occurs when intumescent material foams and forms an insulating char on the surface limiting the heat flow and supply the of oxygen which supports combustion. The second stage of protection occurs when the fire retardant chemicals react with the cellulose and charring takes place, again having the effect of limiting the flow of oxygen.

While Thatchsayf has undoubtedly saved many structures from devastating fires over the years it is extremely important that the application of Micon Thatchsayf goes hand in hand with a solid fire safety plan. Thatchsayf application, creating fire breaks, clearing bush, fire extinguishers, smoke alarms, fire blankets in the kitchen, water hoses which reach to all sections of the roof, properly constructed roofs, proper chimney installation, evacuation plans and building plans are all important factors in creating the safest possible space in case your thatched property is affected by fire and guarding against a total loss.