Fire stop putty/filler


Application Details

FLAMRO BMS/BMK cannot be used at ambient temperatures below 5 °C.

In areas of high infestation by microbes (outdoor application, composting plants, tropic areas etc.) FLAMRO BMS/BMK containing film preservatives should be used. In such cases please contact your supplier.

Shelf-life: Sealed in original containers at room temperature at least 1 year

Storage: 5 °C – 30 °C – to be protected against frost and direct sunlight

Packing BMS:  plastic buckets with 0.5 kg, 1 kg, 5 kg, 12.5 kg and 25 kg net

Packing BMK: cartridges with 0.4 kg und 1 kg net


Spec. Weight

1.55 +- 0.07 g/cm3

Drying time

Completely dry – depending on room temperature, air humidity and on coating thickness: 1 – 3 days

Technical Data

Odour Weak
Binding agent

Special dispersion – solventless

Pigments / fillers

Non-combustible and flame-retardant pigments and fillers

pH-value Approx. 8

Trowel grade (630-870 dPas at 20 °C – 22 °C, Haake Viscotester VT-02)


66 % – 76 %

Hazard Class Not hazardous according to Regulation (EC) No. 1272/2008
Equipment cleaning

Clean with water immediately after use


Approx. 2.05 kg/m2 for a dry film thickness of 1 mm


Surfaces must be stable, clean and free of grease and dust; steel and iron parts should be protected against corrosion in case of outdoor applications or in areas where condensed water may be developed

Temperature resistance

The dried through coatings withstand temperatures from –40 °C to +80 °C, there is neither chemical breakdown, discolouration nor a deterioration in its efficacy.

Toxicity Not subject to marking according to Ordinance on Hazardous Substances
Toxicity of the combustion gases Toxicologic harmless – analysis of the combustion gases according to DIN 4102 – A2, 08.09.1986, by RWTH Aachen and by Elektrophysik Aachen GmbH, 11.12.1997.
Limited oxygen index (LOI) 58 % – 64 % , measured on approx. 1.5 mm thick films
Application temperature Do not use at temperatures below 5°C
Thinner Clean water, maximum 5 weight percent
Moisture- sensitivity FLAMRO BMS/BMK coatings dried through are not susceptible to moisture and can also be used for outdoor applications.