Product Data Sheet Safety Data Sheet Show all documents
EVERBUILD® EVERFLEX® AC95

EVERBUILD® EVERFLEX® AC95

A high strength intumescent acoustic sealant and adhesive

EVERBUILD® EVERFLEX® AC95 is a high strength, permanently flexible intumescent acoustic sealant and adhesive specifically formulated for sealing and bonding plasterboard and other Kraft-lined insulation boards, where a fire-rated seal of up to 4 hours is required. Water based, solvent-free formula, easy to use and clean up and adheres to just about all building substrates. Non-flammable.

  • Forms a fire rated acoustic barrier – up to 4 hour fire rating.
  • Permanently flexible/high grab.
 
  • Adheres to most surfaces.
  • Mould resistant.
  • Non flammable.
  • Easy clean up.
Slump Resistance  No slump at 25 °C when placed in a 20 mm x 10mm vertical channel. Application Temp Range +5 °C to + 40 °C Compatibility Can be used in contact with most building and decorating materials but should not be used against bituminous materials.
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Product Data Sheet Safety Data Sheet Show all documents

Usage

  • To form an acoustic and intumescent barrier by sealing gaps between plasterboard walls, floors and ceilings and dry lining applications.
  • As an adhesive to bond plasterboard to plasterboard and to bond plasterboard to wood and metal studding and direct to block work.
  • For sealing and bonding most other kraft-lined insulation boards.

Advantages

  • Forms a fire rated acoustic barrier – up to 4 hour fire rating.
  • Permanently flexible/high grab.
 
  • Adheres to most surfaces.
  • Mould resistant.
  • Non flammable.
  • Easy clean up.
Slump Resistance  No slump at 25 °C when placed in a 20 mm x 10mm vertical channel. Application Temp Range +5 °C to + 40 °C Compatibility Can be used in contact with most building and decorating materials but should not be used against bituminous materials.

Packaging

900 ml cardboard cartridge.

Colour

White

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Tested to EN1366-4:2006, Independently tested by Warrington Fire Research, Report Number 414846.
  • Acoustic rated to ISO 140-3.
  • Tested for air permeability to EN13141-1 Ventilation for buildings. Performance testing of components/products for residential ventilation.
  • Tested to EN13963, Type 4a.
Product Information

Chemical Base

Ready to use thixotropic paste.

Shelf Life

12 months from date of manufacture.

Storage Conditions

Store in cool dry conditions and protect from frost.

Density

1.6-1.65 g/cm³
Technical Information

Shore A Hardness

Approximately 40.

Movement Capability

Low (+/- 5 %)

Service Temperature

-15 °C to +70 °C

Chemical Resistance

Dilute Acids  - Fair                               Dilute Alkaline - Fair
Aliphatic Hydrocarbons - Fair              Aromatic Hydrocarbons - Poor

Application

Application Information

Curing Time

1 to 5 days, dependent on thickness, ambient temperature and humidity.

Tack Free Time

15 to 60 mins, dependent on thickness, ambient temperature and humidity.
Application steps

SUBSTRATE PREPARATION

All surfaces must be clean and dust free. All loose or flaking surface coatings, and old sealant and mastic joints, should be removed before application. Highly porous substrates such as new plaster should first be primed with Everbuild 501 PVA Bond diluted 1:4 with water. Surfaces may be slightly damp, but not wet. NOTE: THIS WILL SLOW THE CURE.

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