The ASF Promise

  • Guaranteed quality
  • Available from stock
  • Technical support
  • Easy to use
  • Third party certified
  • Reduced project costs

Did you know the ASF range also saves energy

The Building Regulations 2010 Approved Document L requires the conservation of fuel and power in new and existing buildings. The ASF range is designed to be used in a wide range of applications where the passage of air is required to be restricted.

ASF S290 Acoustic Intumescent Sealant

ASF S290 Acoustic Intumescent Sealant is a one part fire stopping gun grade joint sealant. Emulsion acrylic based it gives a firm yet flexible seal to joints in a variety of fire rated structures. It will not support combustion and when subjected to heat, chars and intumesces preventing the spread of smoke and fire through the joint.

ASF S290 Acoustic Intumescent Sealant is designed for sealing joints, voids and irregular holes in fire walls, floors, partitions and other structures and for maintaining their integrity when sealing around pipes and cables that penetrate them. It is also ideally suited for internal perimeter pointing of fire rated door and window frames.

  • 4 hour rating
  • Versatile one product solution
  • Tested in accordance with: BS476-Part 20:1987 - fire rating, BSEN 1366-3 - fire rating, BSEN ISO 140-3:1995 - acoustic rating

The following fire ratings have been achieved in controlled test work*

Joint SubstratesOrientationIntegrity (minutes)Insulation (minutes)
Masonry/Masonry Wall Joint 240 240
Masonry/Masonry Floor Joint 240 180
Gypsum Drywall Wall Joint 120 120
Gypsum Drywall Penetration 120 120
Concrete Floor Penetration 240 240

The above results show typical integrity levels of the product in a fire situation, however, each joint situation will have different characteristics and therefore different fire ratings. In general it has been found that a greater depth of sealant will provide greater integrity and that the use of a double seal i.e. sealant applied at both external faces of a joint will increase values further.

 

*A full approval of the product is contained in Certifire Certificate of Approval No. CF 829

 

The Certifire report details tests carried out on the material when tested against the performance criteria of BS476: part 20 and BSEN 1366-3 with additional guidelines from BSEN 1366-4

Technical Data
Form: Ready to use thixotropic paste
Specific Gravity: 1.60 - 1.64
Flashpoint: None
Tack Free Time: 60 minutes maximum
Skin Time: 20 minutes maximum
Solids Content: 80% minimum
Movement: Low to medium 12.5% butt joints
Shelf Life: Up to 12 months when stored in unopened cartridges under cool dry conditions. Avoid temperatures above 30°C & below 5°C
Compatibility: Can be used in contact with most building and decorating materials.
Classification: Sealant ISO 11600 - F - 12,5P
Acoustic Rating: 40(-3;-8)dB Rw(C;CTtr) BS EN ISO 717-1:1997

ASF S290 Acoustic Intumescent Sealant is available in 310ml & 380ml rigid plastic cartridges, 600ml aluminium foil sausages, and 830ml jumbo cartridges.

Where applicable the ASF range has Certifire third party certification, which gives the regulator, specifier, installer, customer and end user confidence in the stated performance and field of application of the ASF passive fire protection range.

Expert guidance and technical support

ASF provides guidance in the use and installation of the ASF range. Guides are available along with telephone support giving advice on use, installation and performance.

Specifying ASF products

Architects, specifiers and installers can be assured that when ASF products are selected that they will meet the key requirements of quality, performance and ease of installation.

Interested in stocking the ASF range?

If you would like to stock the ASF Pro range of products please contact us at sales@asf-products.com