tel 01329 844500 (+44 1329 844500) email:


Astro PS Coating CE certification.


UL CE and other certification logos.

CE Documents:

'DoP's = Declarators of Performance.

'CoC's = 'Certificates of Constancy'

TDS = Technical Data Sheet

Astro Coat ablative coating.

DoP Astro PS Coating

CoC Astro PS Coating

TDS Asto PS Coating

UL EU Documentation


Installation Video


Astro Penetration Seal Coat is a thicker formulation, for brush application, to coat plain stone wool as it is being installed by the user: it can also be be applied to insulation already in place on the services, adding to the fire resistance of the seal.

It prevents the passage of fire, air and sound between fire rated compartments and has been tested in block wall, concrete, masonry and plasterboard partition.

Astro PS Coat is a water-based, acrylic, ablative coating with excellent fire, air permeability and elastomeric properties.

At normal temperatures PS Coating remains flexible to permit thermal and mechanical movement of services and the building structure.

Astro PS Coat has been tested to EN1366-3 EI60 when applied to pre-fitted stone fibre equal or greater than 140kg/m3 density and equal or greater than 50mm thickness.

CE Marked and UL-EU Listed.

Fire Resistance Testing to EN 1366-3 : 2009.

Fire Classification to EN 13501-2.

Air Permeability testing to EN 1026.

Acoustic Isolation testing to EN 10140.

Remains flexible between -5°C to +70°C.

Easy to use fibre free coating.

Life expectancy of over 25 years.

Can be spray, brush or trowel applied.

Tested in Block Wall, Concrete, Masonry and Plasterboard Partition.

Allows user to choose the stone wool substrate.
(Min requirement equal or greater than 140kg m3 min 50mm thick).

Used seal penetration seals with on-site coating applications.


Properties & Specification


Water based flexible acrylic coating



Specific Gravity

1.45– 1.55 g/cm³

Fire Resistance/Insulation

EN 1366-3 EI 60


EN 13501-2

Acoustic Insulation

EN 10140 51dB when installed with 100mm thick 140kg/m3 stone wool.

Air Permeability

600 Pa EN 1026 - 100Pa 1.8/1.4 m3/h/m2

Shelf Life

12 Months

Cure Rate

0.5mm per day at 50% relative humidity 23°C

Tack Free

6 hrs at 23°C, 50% RH

Application Temperature

-5°C to +40°C

Coating Thickness

1mm Nominal, wet coating thickness

Installation Specification

50mm stone wool - EI 60 - EN 1366-3
100mm stone wool - EI 120 - EN 1366-3

Product Availability

Astro PS Coating - Sold per 5 Kilo Tub.

Product Code

Product Description


Astro PS Coat

To Order & Specify

Please contact us and quote the following information - Please quote- Quantity / Trade name / Product Ref
Typical wording- 10 / Astro PS Coat / AFPSCOAT

>> Tel: +44 1329 844 500 or >> Email:


Astro PS Coat is manufactured in the EU, meeting the highest quality standard in compliance to ISO EN 9001. For fire test certification and technical advice contact Astroflame technical department.


For further information on installation requirements please review the installation video or contact the technical team on: tel +44 1329 844 500 or email

Health and Safety

The product does not present any known health hazards during or after installation. Normal good industrial and personal hygiene practices should be observed. For further information on health and safety requirements please contact the technical team on: tel +44 1329 844 500 or email



Astroflame (Fire Seals) Ltd. Intumescent House
Unit 8, The IO Centre, Stephenson Road, Segensworth

tel 0800 023 2482 (01329 844500)

fax 0800 023 2483 (01329 844600)

intl tel +44 1329 844500

intl fax +44 1329 844600