Product Data Sheet Safety Data Sheet Show all documents
EVERBUILD® EVERFLEX® AC50

EVERBUILD® EVERFLEX® AC50

HIGH STRENGTH ACOUSTIC SEALANT AND ADHESIVE

EVERBUILD® EVERFLEX® AC50 is a high strength, permanently flexible acoustic sealant and adhesive specifically formulated for sealing and bonding plasterboard and other kraft lined insulation boards to common substrates.

  • Permanently flexible/high grab.
  • Adheres to most surfaces.
  • Mould resistant.
  • Non flammable
  • Overpaintable.
  • Easy clean up.
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Product Data Sheet Safety Data Sheet Show all documents

Usage

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

Advantages

  • Permanently flexible/high grab.
  • Adheres to most surfaces.
  • Mould resistant.
  • Non flammable
  • Overpaintable.
  • Easy clean up.

Packaging

380ml and 900ml cartridges

Colour

White

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Independently tested to BS EN ISO 140/3.

EN15651-1:2012

EN13963:2005
Product Information

Shelf Life

12 months from date of manufacture when stored in unopened cartridges.

Storage Conditions

Store in cool (5 - 25°C) dry conditions and protect from frost. 

Density

1.55 - 1.65 g/cm3

Solid Content

ca. 80%
System information

Compatibility

Can be used in contact with most building and decorating materials but should not be used against bituminous materials.
Technical Information

Shore A Hardness

Approximately 40

Movement Capability

Low to medium (+/- 5%)

Chemical Resistance

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

Service Temperature

-15°C to +70°C

Application

Application Information

Sag Flow

No slump at 25°C when placed in a 20mm x 10mm vertical channel

Ambient Air Temperature

+5°C to +40°C

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 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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