Nullifire (Firetherm) FS709 Intumastic HP Intumescent Sealant is a heat-reactive, intumescent acrylic fire barrier mastic for internal use around services in walls and floors.
Seals around pipes, cables and cable trays
Provides up to 4 hours of fire resistance
60 to 120 min tack time (depending on temperature/humidity)
Nullifire FS709 Intumastic HP Intumescent Sealant is a heat-reactive, intumescent acrylic fire barrier mastic for internal use around services such as combustible pipe seals, cables and cable trays and baskets in walls and floors. The mastic contains inert fillers and graphite, providing up to 4 hours of fire resistance, and has been tested within single-skin partitions.
Maximum diameter 125 mm combustible pipe seals, up to 60 mm insulation wall thickness, 60 mm annular space around cables or large preformed slots in walls floors forming cable tray/basket openings.
Typical Applied Depths
25 mm in openings 150% of combustible pipe/conduit size
25 to 50 mm within Firetherm Intubatt
25 mm direct within plasterboard annular spaces
30 mm within conduits
10-25 mm around all insulation types, up to 50 mm wall thickness
Coverage
10 mm wide seal - 3.25 m approx.
15 mm wide seal - 1.35 m approx.
20 mm wide seal - 0.78 m approx.
Refer to the technical data sheet for more coverage details.
Installation
Install FS709 Intumastic HP Intumescent Sealant in full accordance to installation details provided by Nullifire.
FS709 Intumastic HP Intumescent Sealant will expand 52 times by volume. Reaction commences at 130°C.
Read the Intumastic HP safety data sheet instructions before starting work.
Ensure the opening size corresponds to 150% of the pipe combustible size.
Cut the end of the tube and trim the nozzle to size required.
Force FS709 Intumastic HP Intumescent Sealant well into the joint ensuring the correct depth of seal, backing material and sides of the joint are well covered.
Tool off to a good finish using a wet trowel.
Specifications
Tube size: 310 m
Colour: grey.
Tack free time: 60 to 120 minutes depending on temperature/humidity.
Fire Testing
Tested at Exove BM Trada to BS EN 1366 Pt 3. 240 minutes fire integrity and insulation
IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contactedto obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditionsand should be applied only by an individual with the necessary expertise and experience.We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
Nullifire FS709 Intumastic HP Intumescent Sealant is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
An extensive range of accessories and ancillary products for use with Nullifire (Firetherm) systems, helping the installation and application of firestopping products. Refer below to see the full range. More Information Delivery Info