Sika Everbuild Everflex AC50 Acoustic Sealant Adhesive White 900ml 489512 AC50900

Sika Everbuild Everflex AC50 White Adhesive Sealant Jumbo 900ml Tube 489512 AC50900

MPN: AC50900

Sika Code: 489512

Barcode: 5029347600112

Size: 900ml Tube For use in a 900ml Jumbo Applicator Gun

Colour: White

Overview:

Sika Everbuild Everflex AC50 Contract Acoustic Sealant & Adhesive is a high-strength, permanently flexible sealant and adhesive designed for sealing and bonding plasterboard and other kraft-lined insulation boards to common building substrates. This white 900ml jumbo tube is ideal for larger jobs and bulk application where reliable coverage is needed.

AC50 helps create an effective acoustic barrier by sealing gaps and joints in walls, floors, ceilings, and dry lining systems, while also offering strong grab for bonding applications. It is easy to apply, easy to clean up, over-paintable when cured, and suitable for professional use in domestic and commercial interior projects.

Key Features

• Permanently flexible acoustic sealant and adhesive

• High grab formulation for strong bonding performance

• Helps form an acoustic barrier by sealing gaps and joints

• Adheres to most common building surfaces

• Suitable for plasterboard and kraft-lined insulation boards

• Mould resistant and non-flammable

• Over paintable after curing

• Large 900ml jumbo tube for bulk application

Specifications

• Brand: Sika Everbuild

• Product Name: Everflex AC50 Contract Acoustic Sealant & Adhesive

• MPN: AC50900

• Sika Code: 489512

• Barcode: 5029347600112

• Colour: White

• Size: 900ml

• Pack Type: Jumbo tube / sausage-style cartridge format

• Application Requirement: For use in a 900ml jumbo applicator gun

• Primary Use: Acoustic sealing and bonding in dry lining/plasterboard systems

AC50 Acoustic sealant Adhesive Applications

• Sealing gaps between plasterboard walls, floors, and ceilings

• Dry lining acoustic sealing applications

• Bonding plasterboard to plasterboard

• Bonding plasterboard to wood and metal studding

• Bonding plasterboard direct to blockwork

• Sealing and bonding most kraft-lined insulation boards

How to Use AC50 900m Acoustic Sealant Adhesive

• Ensure surfaces are clean, dry, and free from dust, grease, and loose material.

• Load the 900ml tube into a compatible jumbo sealant applicator gun.

• Apply a continuous bead to joints, gaps, or bonding areas as required.

• Press materials firmly into place when using as an adhesive.

• Tool the bead if needed to ensure full contact and a neat finish.

• Allow to cure fully before painting or subjecting the joint to stress.

Sika Everbuild Everflex AC50 White Adhesive Sealant Jumbo 900ml Tube – Key FAQs

• What is Sika Everbuild Everflex AC50 900ml designed for?
  It is designed for acoustic sealing and bonding in dry lining and plasterboard installations, helping reduce sound transmission through gaps, joints, and penetrations.

• Can I use AC50 as both a sealant and an adhesive?
  Yes. AC50 is formulated to both seal joints and bond plasterboard or kraft-lined insulation boards to suitable common substrates.

• Is this product paintable?
  Yes, AC50 is over-paintable once cured. For best results, allow full cure and use a compatible paint system.

• What surfaces does Everflex AC50 adhere to?
  It adheres to most common construction surfaces, including plasterboard, wood, metal studding, and blockwork, when properly prepared.

• Does this product stay flexible after curing?
  Yes, it is permanently flexible, which helps maintain the seal and acoustic performance as building materials move slightly over time.

• Is AC50 suitable for acoustic sealing applications?
  Yes, it is specifically formulated for acoustic sealing and helps create an airtight barrier in walls, floors, ceilings, and dry lining systems.

• What gun do I need for this 900ml tube?
  This is a jumbo 900ml tube and requires a compatible 900ml jumbo sealant applicator gun to dispense correctly.

• Can I use this in bathrooms or constantly wet areas?
  AC50 is mainly intended for dry lining and acoustic sealing applications. For prolonged wet or high-moisture exposure, a dedicated waterproof sealant is usually a better choice.

• How long does AC50 take to cure?
  Curing time varies with bead size, temperature, and humidity. Allow adequate time before painting or loading the bond.

• Is there an alternative size available?
  Yes, an alternative C4 size is also available if you do not require the jumbo 900ml format.

Please note this product needs a Jumbo sealant gun to Dispense this product, alternative c4 size also available.

Everbuild Contract AC50 900ml Data Sheet:

"Always read the Technical Datasheet prior to first use to ensure you have the correct information and  product for your application"

All Acoustic Sealants All Plasterboard Adhesives