Pyromas A is a one part sealant system which is solvent free. When subjected to fire, a chemical reaction forms a safe, inorganic meringue.
The intumesced product provides fire sealing in building joints up to 35mm wide.
Fire resistance tests have been conducted to BS476: Part 20: 1987 achieving 4 hours fire resistance in gaps up to 35mm wide. Tests were conducted between a number of substrates including Hardwood, Softwood, Steel, Concrete, Vermiculite Board and Aerated Concrete. Pyromas A shows good resistance to a wide range of commonly found chemicals. Care must be taken to avoid prolonged contact with hydrocarbon based products.
Pyromas A is suitable as a permanent fire seal in low movement joints, door frame to wall gaps, dry lining and partitions.
Joints in structures should be dry, clean, and free of powder or dust.
Pyromas A should be inserted to the correct depth to ensure the necessary fire performance.
To improve surface finish, smooth with a spatula. Cured Sealant can be over-painted.
Pyromas A is supplied in 310ml cartridges to fit standard skeleton mastic guns. Also supplied as 600ml sausages. Box quantities are 25 per box.
Colours: White, Brown & Grey
Storage Temp: +5° to +25°C
Reaction Temp: 120°C
Application Temp: +5° to +30°C
Volume Expansion: 150%
Tack Free Time: 10-60 minutes (depending on conditions)
Shelf life: 12 months
Joint movement: +/- 10%
Estimating Quantities for Pyromas A
To calculate the required number of cartridges required to fill a gap use the following equation:
W x D x L = N
N÷310= Number of Cartridges
W=Width of gap in mm. D=Depth of gap in mm.
L=Length of gap in mtrs. N=Volume of material.