Everbuild AC95 Intumescent Acoustic Sealant Adhesive 900ml 486163 AC95900

Everbuild Everflex AC95 intumescent Acoustic Sealant and Adhesive 486163 Sold In Singles

Option: AC95900 900ml Tube

Barcode: 5029347602413

Sika Code: 486163

Size: 900ml

"Please note this product needs a Jumbo 900ml Application Gun.

Product Overview:

The Everbuild Everflex AC95 Intumescent Acoustic Sealant and Adhesive is a professional-grade fire-rated and soundproofing sealant designed to provide dual protection—acoustic insulation and fire resistance—in one high-performance formula. Supplied in a single 900ml jumbo cartridge, it’s perfect for smaller projects, repair work, or individual applications where safety and noise reduction are key priorities.

Ideal for sealing joints, service penetrations, and gaps in plasterboard walls, floors, and ceilings, AC95 delivers up to 4 hours of fire resistance while significantly reducing sound transmission between rooms. It complies with stringent building regulations, making it suitable for residential, commercial, and industrial environments.

Key Benefits

• Fire Rated up to 4 Hours: Provides exceptional fire protection by expanding under heat to block flames and smoke.

• Acoustic Sound Barrier: Reduces airborne noise transfer, enhancing sound insulation performance in walls, floors, and ceilings.

• Dual Function: Works as both an intumescent sealant and a strong adhesive for versatile use.

• Flexible and Durable: Permanently flexible formula accommodates movement without cracking or shrinking.

• Easy Application: Supplied in an eco-friendly 900ml cardboard cartridge for convenient, mess-free use.

• Over-Paintable: Can be painted once fully cured for a seamless finish.

• Safe and Non-Flammable: Suitable for use in fire-rated construction systems.

• Professional Quality: Trusted by tradesmen and installers for both acoustic and fire-rated sealing applications.

Typical Applications

• Fire-Rated Sealing:

  • Seal expansion joints, wall and floor junctions, and service penetrations in fire-rated structures.

  • Create fire-resistant seals around doors, windows, and electrical fittings.

• Acoustic Insulation:

  • Prevent sound leakage between partition walls, floors, and ceilings in domestic or commercial buildings.

  • Seal joints in dry lining, acoustic panels, and soundproof partitions.

• Adhesive Use:

  • Bond plasterboard to plasterboard, blockwork, wood, and metal studding.

  • Secure insulation and soundproofing panels where adhesion and flexibility are needed.

Technical Specifications

• Product Type: Intumescent and Acoustic Sealant / Adhesive

• Size: 900ml Cartridge

• Fire Resistance: Up to 4 hours (when correctly installed)

• Cure Type: Water-based acrylic

• Application Temperature: +5°C to +40°C

• Paintable: Yes, once fully cured

• Colour: White (dries white)

• Compatibility: Bonds to concrete, brick, plaster, wood, and steel

• Shelf Life: 12 months unopened when stored in cool, dry conditions

How to Use

1. Surface Preparation: Ensure the surface is clean, dry, and free of dust, oil, or grease.

2. Cut Nozzle: Trim the nozzle to match the required bead size and attach it to the cartridge.

3. Load the Cartridge: Insert into a jumbo 900ml application gun.

4. Apply Evenly: Run a continuous bead along the joint or gap, ensuring even distribution.

5. Tool the Seal: Smooth with a wet tool or finger for a clean, airtight seal.

6. Allow to Cure: Let the product fully cure before painting or exposing to heat or stress.

Safety and Performance Compliance

• Tested to EN1366-4 for fire resistance.

• Meets building regulations for both fire integrity and acoustic insulation.

• Expands when exposed to high temperatures to prevent fire spread.

Ideal For

• Plasterboard partition walls and ceilings

• Dry lining systems

• Cable and pipe penetrations

• Acoustic control rooms and studios

• Fire-rated construction joints

FAQs – Everbuild Everflex AC95 Intumescent Acoustic Sealant and Adhesive (Single 900ml)

1. What makes AC95 different from standard sealants?
AC95 combines acoustic and fire-rated protection in one formula. It prevents noise transfer and provides up to 4 hours of fire resistance, expanding when exposed to heat.

2. Can I use it outdoors?
It’s designed for interior use but may be used in covered outdoor areas where it’s not directly exposed to weather.

3. How long does it take to dry?
Typically, AC95 skins over in 15–30 minutes and cures fully within 24–48 hours, depending on humidity and joint depth.

4. Can it be painted over?
Yes, once fully cured, AC95 can be painted with most water-based paints for a seamless finish.

5. Does it adhere to metal or masonry?
Yes, AC95 bonds strongly to concrete, brick, plaster, metal, wood, and plasterboard surfaces.

6. Is a special gun needed for application?
Yes, you’ll need a 900ml jumbo sealant gun for this large cartridge.

7. Does it resist mould and mildew?
Yes, it contains mould-resistant properties, ideal for long-term indoor use.

8. Can I use it for acoustic panel installations?
Absolutely, AC95 is perfect for sealing and bonding acoustic and insulation panels to enhance soundproofing.

9. What happens when exposed to fire?
The intumescent compound expands to form a tough, fire-resistant barrier that prevents flames and smoke from spreading.

10. Is it environmentally safe?
Yes, AC95 is low-odour, water-based, and non-flammable, making it safe for use in occupied buildings.

Why Choose Everbuild AC95 Intumescent Acoustic Sealant and Adhesive – 900ml Single Cartridge
For professional acoustic and fire-rated sealing in one step, the Everbuild AC95 offers unbeatable protection, flexibility, and reliability. Perfect for both trade and maintenance use, it’s trusted by builders, contractors, and installers for meeting safety standards without compromising on performance. Whether sealing joints, bonding plasterboard, or enhancing noise control, AC95 ensures top-tier results every time.

Everbuild Contract AC95 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 Heat Resistant Products

All Intumescent Fire and Acoustic Sealants