Four Counties ​Thatchingltd

​Properties of Thatch-Safe

Fire retardant – 60 minutes integrity
Insulating – 30 minutes
Micro-porous – Maximises the opportunity of the thatch to breathe – so reduced risk of premature rotting of thatch associated with non breathable solutions.
Flexible – 5m X 1m sheets 20mm thick. It is not a fireboard but a fire barrier.
Lightweight – <4kg per m2

​Member of The Thatch Advice Centre

Thatch-safe and magma fire stop fire barriers

Thatch-Safe® is a layered product designed especially for thatch which has had LABC (National Building Control Approval) since 2008. Thatch-Safe achieved LABC (National Building Control) System Approval, Certificate Number 422-12-7177. It is a flexible barrier (1M X 5M) which is placed horizontally over the rafters and under the thatch.

Thatch-Safe® meets building regulations for new build (as the
Dorset Model) but has added value, namely:

Thatch-Safe® has both 1/2 hour fire resistance and 1 hour fire integrity.
It is light, flexible and easy to fit so that it has benefits for both new builds and also for older properties with more undulating roofs.
It is designed to go under the thatch but also around the chimney if a risk of heat transfer is identified. Unlike other solutions it addresses the major cause of thatch fires which is heat transfer from chimneys to the thatch.
Many thatchers, architects, surveyors, firemen, builders and thatched home owners have been involved in the development of this product so that it addresses everyones requirements.
It has insulation of 1/2 hour and so is a one product solution in meeting fire retardant and insulation requirements. With the thatch, it meets 0.2 u value so that no additional insulation products are required to meet building regulation requirements.
The lack of counter battening required to fix, means that there is no gap between the thatch and fire barrier which can produce a ‘chimney effect’ should the thatch catch fire, and no ‘dew’ points (condensation) should it not.
The fact that it is quick and easy to fit, compared to other solutions, makes it a cost effective option in meeting fire retardant and insulation requirements. Savings are made in both the product and the labour element required to fix it to the rafters.
Not only does Thatch-Safe® meet building regulation and insulation requirements it is tested as micro-porous. Should the thatch not catch fire (which the majority should not) it reduces the sweating potential and thus the premature rotting associated with solid boards and barriers. It has benefits for the lifespan of your thatched roof.

The Thatch-Safe® Model is a simple and effective solution. The Thatch-Safe® Model Plus has the addition of a fire retardant spray called Magma Firestop on the outside of the thatch making a fire retardant sandwich.


About Magma Firestop®

Magma Firestop specialise in the development, manufacturing and marketing of an extensive range of fire retardant products and high performance coatings.  The world-wide established distributors and agents are controlled from Magma’s Head Office in the Netherlands.

All of the products are both environmentally as well as user friendly and make greater fire safety available to as many people as possible.

Magma has seen a 500% global increase in production (2014) in response to increased demand for its excellent products.

Magma Firestop for thatched roofs has been tested and used internationally so it is proven and trusted in the fight against thatch fires. It is a spray which gives protection from fire risks in the form of sparks, flying embers, fireworks, Chinese lanterns, bonfires, barbeques. There are external and internal sprays for thatch depending on client requirements.

The Magma concept of protecting thatched roofs has received many endorsements from leading international test institutes and has proven itself over many years in many countries.  It is tested in the UK under BS476 Part 3, receiving an A rating for spread of flame. It has also been tested in many other countries.

The manufacturing process is ISO 9001:2000 certified and complies with OECD guidelines during manufacturing and application processes.

Magma only works with specially trained operators to apply the products, to ensure the quality of the application.  Treatment Certificates are supplied to customers as proof of spraying to Magma’s standards. In the UK the majority of sprayers are Master Thatchers which ensures care of your roof at all stages. The procedure of the treatment of thatched roofs is embedded in Magma’s NEN-EN-ISO 9001 Certified Quality Assurance handbook.

Magma Firestop products (unlike other fire retardant sprays for thatch) do not contain any toxic elements (like borates) and are safe to handle.  All products have been tested to ensure they will not react adversely with different kinds of thatch.

These are some of the reasons why insurers (and underwriters) are trusting application of Magma Firestop in reducing thatch fire risks and so offer reductions in premiums as well.

We and our operatives are committed to contributing to fire safety.


About magma-firestop

Standards Met

GB: BS 476/3-/7
GER: DIN 4102/1-B2
NL: NEN 6063
FR: M1
DEN: DS 1063.1
EST: EVS620-10:1996
KEN: EVS620-10:1996
AUS: AS/NZS 1530.3
NZ: AS/NZS 1530.3
RUS: GOST 30247.3

Magma Firestop for wood

As all magma products, this is tested and used internationally on many different woods. Those used in the construction industry have found benefit in increasing fire resistance, especially on buildings near boundaries or internal structures where fire hazards require additional fire protection.

We are happy to talk to you regarding your property or project and how Magma Firestop can help reduce your fire risk and increase your peace of mind.