Astro INTU Mastic - Intumescent Acoustic Mastic
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Description
Astro Intu Mastic is 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. Astro 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. Astro Intu Mastic Fire Resistant has been tested and Certified as part the Astroflame Fire Stopping range. The Astro 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
- Astro Batt
For specific details please refer to the test certification.
Properties
| General Characteristics | Inspection Method | Value |
| Product Data (uncured) | ||
| Density (S.G) | ASTM D792:13 | 1.63 |
| Appearance | Paste, matt finish | |
| Resistance to flow | ISO 7390 : 2003 | Pass |
| Product Data (after curing) | ||
| Hardness Shore A | ISO 7619-1 : 2010 | 63/39 |
| Movement Capability | 7.5% | |
| Operating Temperature °C | -5 to 40 | |
| Loss Mass of Mass on Heating | ISO 3451-1 (Method A) | 68.34 |
| Flexibility - Bend Test | ISO 1519 | Pass |
| Conditioning | EOTA TR024 | Type X |
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Astro INTU Mastic - Intumescent Acoustic Mastic
£1.99
Astro INTU Mastic - Intumescent Acoustic Mastic
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Frequently Asked Questions
Yes — orders placed before 12pm Monday–Friday are dispatched same day on a tracked next-day service. Delivery is free on orders over £50; standard delivery is £3.95.
Our switches, sockets, consumer units and fixed-wiring accessories meet BS 7671 (18th Edition) requirements. Each product page lists the relevant British Standards in the specifications. Notifiable installation work should be carried out by a qualified electrician under Part P of the Building Regulations.
Bathroom Zone 1 needs IP65 or higher; Zone 2 needs at least IP44. Outdoor / exposed installations should be IP65 or above. Each product page lists the IP rating in the specifications; if it is not listed, contact our team and we will confirm before you order.
Yes — registered trade customers receive tiered discounts (up to 40%), VAT invoicing, and 30-day account terms. Apply via the Trade Account page; most applications are approved within one working day.
Unopened items can be returned within 14 days for a full refund. Faulty goods are covered by the manufacturer warranty (typically 1–5 years depending on brand). Email support@kenttraders.co.uk to start a return.