Intu Mastic - Grey 310ml (12 x Cartridges)
Intu Mastic - Grey 310ml (12 x Cartridges)
Intu Mastic - Grey 310ml (12 x Cartridges)

Intu Mastic - Grey 310ml (12 x Cartridges)

(Inc. 20% VAT)
(£23.31 Exc. VAT)
Fire Mastic Cartridge

About the Intu Mastic Product

A water based acrylic sealant used to reinstate the fire resistance of wall and floor constructions in linear joints and where apertures are penetrated by multiple services. The Intu Mastic Fire Resistant Sealant has been developed utilising specialist polymer technologies allowing it to be tested and Certified to internationally recognised standards, including CE marking and UL Listings. The Intu Mastic Fire Resistant has been tested and Certified as part the Fire Stopping range. The Intu Mastic system can be installed across a variety services and substrates including, Flexible and Rigid Walls, Rigid Floors, Multi-Service penetrations, Blank Openings, Head of Walls and Fire Rated Batt.

*For specific details please refer to the test certification.

For more information please download the Product Data Sheet under the Fire Test Reports

Please note: Each item is sold separately just select your item(s) and click add to cart.

Product Size Availability

Intu Mastic Size: 310ml - Colour Grey
Pack: (12x) 12 x Cartridges
For more pack sizes click here


We have technical representatives who provide assistance in the selection and specification of the products on this site and should be consulted for exact installation and product suitability. Ensure an early engagement with ourselves, designers, main contractor and specialist installers before any installation. Other trades and/or manufacturers may need to be consulted. For in-depth information, specification and technical advice please call our Head Office on Tel: +(0)1329 841416 or email


All interested parties, designer, specifier, main contractor and specialist installers should provide access to allow the fire stopping seals to be regularly inspected and maintained, as well as records kept of such maintenance at minimum periods of 12 months, as required by the Regulatory Reform Order, and repaired if necessary. Reference should be made to ASFP TGD 17 Code of Practice for the Installation and Inspection of Fire Stopping.


It is vital that those entrusted to design or install a fire stopping product have the necessary levels of competence to undertake the task professionally and thoroughly. The level of competency required will be commensurate with the expected complexity of the building. All designers must eliminate, reduce or control foreseeable risks that may arise during installation, construction or maintenance when preparing or modifying designs. Clients should ensure that the principal designer and principal contractor carry out their duties under CDM regulations. The ASFP foundation course in passive fire protection provides essential knowledge as part of demonstrating competency and understanding in this key fire protection specialism.

Additional Notes:

Please refer to the ETA/UL-EU sheet for fields of application for this product. For further information on installation requirements please refer to the manufacturer of the services and the wall/floor specification to ensure the compatibility of this product, if in doubt please contact the technical team with services and wall/floor specification on Tel: +(0)1329 841416 or email

Fire Test Reports

Download the following Intu Mastic Product Data Sheet (PDS), Safety Data Sheet (SDS), Technical Data Sheet (TDS), European Technical Assessment Sheet (ETA), Declaration of Performance (DoP), Certificate of Constancy of Performance (CoC), & UL Documentation (UL).

Intu Mastic Product Data Sheet

Intu Mastic GB Safety Data Sheet

Intu Mastic NI Safety Data Sheet

Intu Mastic EU Safety Data Sheet

Intu Mastic DoP Sheet PS

Intu Mastic DoP Sheet LGS

Intu Mastic TDS Sheet

Intu Mastic CoC CE Sheet

Intu Mastic PS CE ETA Sheet

Intu Mastic LGS CE ETA Sheet

Intu Mastic UL Documentation


We only sell and deliver goods in the Mainland UK and NI - unless you have made a prior arrangement with us. For delivery to the following postcodes starting with: IM, HS, ZE, JE, GY, KW, FK, PH33 or AB please contact us on 01329 841 416 or for all enquiries.

Delivery charges are flat rate whatever quantity of goods you buy.

Current delivery charges (excluding VAT) are:

  • £12.50 for Express Delivery (Typically 1-2 days)**
  • £25.00 for AM Delivery**
  • £34.75 for N. Ireland 3-5 Working Days (Monday to Friday)

** "Express & AM Delivery" applies to the normal work days, Monday to Friday, and assumes in stock orders are placed before 14:00 on a week day. For Scottish and highlands locations deliveries can take up to 3 days. For URGENT delivery enquiries please contact us.

Track your delivery

All products bought from us are tracked and you can check the progress of your delivery by contacting one of our friendly team members on 01329 841 416 or

You are required to sign for your order and we cannot leave items without a signature unless by prior arrangement. (Please note we cannot accept any liability for any shortage and/or damage if goods are left at your request).

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Astroflame (Fire Seals) Ltd