---
product_id: 51302969
title: "Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml"
brand: "everbuild"
price: "834869₫"
currency: VND
in_stock: true
reviews_count: 9
category: "Everbuild"
url: https://www.desertcart.vn/products/51302969-everbuild-everflex-ac50-contract-acoustic-sealant-and-adhesive-white-380
store_origin: VN
region: Vietnam
---

# Acoustic & intumescent barrier Non-flammable & mould resistant 380ml high-grip sealant Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml

**Brand:** everbuild
**Price:** 834869₫
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal smart, live quiet – the pro’s choice for flawless finishes!

## Quick Answers

- **What is this?** Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml by everbuild
- **How much does it cost?** 834869₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/51302969-everbuild-everflex-ac50-contract-acoustic-sealant-and-adhesive-white-380)

## Best For

- everbuild enthusiasts

## Why This Product

- Trusted everbuild brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Paint-Ready Finish:** Easily overpaintable once cured, blending seamlessly with your interior design.
- • **Safety First, Always:** Non-flammable and mould resistant to keep your environment safe and healthy.
- • **Soundproof Your Space:** Creates an acoustic barrier that reduces noise, perfect for modern work-from-home setups.
- • **Effortless Application:** Compatible with standard skeleton caulking guns and includes nozzles for precision.
- • **Permanently Flexible, Maximum Grip:** Adheres effortlessly to plasterboard, wood, metal, and blockwork for a rock-solid seal.

## Overview

Everbuild Everflex AC50 is a 380ml white acrylic sealant and adhesive designed for professional-grade acoustic and intumescent sealing. It offers permanent flexibility, high adhesion to multiple surfaces, mould resistance, and non-flammability. Ideal for sealing gaps in plasterboard walls, floors, and ceilings, it’s paintable after curing and easy to apply with standard caulking guns, making it a trusted solution for noise reduction and durable bonding in construction and renovation projects.

## Description

Shop Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml. Free delivery on eligible orders of £20 or more.

Review: Good stuff 👏 - I had some hesitation because other reviewers said it didn't fit in a culking gun - they do in fact fit in a normal size skeleton/caulking gun. Someone else mentioned not getting nozzles, i got 3 nozzles with 3 tubes as expected. The sealant itself was easy to use when sealing round insulated plasterboard. I also used it as frame sealant around the window/plasterboard joints and round sill. Tooled off and cured really nicely. Between this sealant and insulated plasterboard the room is warmer and a little quieter. Will use again
Review: A good priced product and met with my expectations - A good item which did the job just what I expected.

## Features

- Contains a mixture of 5-Chlor-2-methyl-2H-isothiazol-3-on und 2-Methyl-2H-isothiazol-3-on (3:1) (CIT/MIT). May produce an allergic reaction.
- Suspected of damaging fertility or the unborn child.
- Ac50 is permanently flexible with high grab will adheres to most surfaces whilst being mould resistant and non flammable
- When cured it can be over paintable and is easy to clean up
- Ac50 will form an acoustic and intumescent barrier by sealing gaps between plasterboard walls, floors and ceilings
- Ac50 bonds plasterboard to plasterboard, wood, metal studding and direct to block work

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0012RLYJ6 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 5,052 in DIY & Tools ( See Top 100 in DIY & Tools ) 114 in Sealers |
| Colour | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (504) |
| Date First Available | 1 Jan. 2007 |
| Included Components | 1 x cartridge |
| Item Package Quantity | 1 |
| Item Weight | 640 g |
| Item model number | AC50C4 |
| Manufacturer | Sika Everbuild |
| Material | Acrylic |
| Part Number | AC50C4 |
| Product Dimensions | 3.2 x 3.81 x 25.4 cm; 639.56 g |
| Size | 380ml |
| Style | Compact |

## Product Details

- **Brand:** Everbuild
- **Item dimensions L x W x H:** 32 x 38 x 254 millimetres
- **Item weight:** 0.64 Kilograms
- **Material:** Acrylic
- **Style:** Compact

## Images

![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 1](https://m.media-amazon.com/images/I/317soPlJAZL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 2](https://m.media-amazon.com/images/I/41GvZyOG-oL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 3](https://m.media-amazon.com/images/I/512oJWS3YGL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 4](https://m.media-amazon.com/images/I/519gjTPBatL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 5](https://m.media-amazon.com/images/I/51EMqYoGsUL.jpg)

## Questions & Answers

**Q: Is the can 400 ml or 900 ml?**
A: This is the C4 400ml tube.

**Q: Could I use this to attach sound proofing matt directly to a plaster board wall? Thanks in advance for any help offered**
A: Yes, it's not only a flexible sealant but it's also an adhesive specifically formulated for sealing and bonding plasterboard and other Kraft lined insulation boards.

**Q: Is this 100% silicone?**
A: Not like any 100% silicone I have ever used.     It is more like a mud  but unlike silicone does not cure throughout the bead.      It has a cure on the outside crust but has an elastic type slower cure in the middle to allow for acoustic bounce and absorption.    I have removed some previous acoustic work and the beading is still tacky on the thicker beads after many months following installation.    It does grab however I would not trust it to hold any weighty objects

**Q: Can i use on the outside of my shed to seal gaps between wood joints?**
A: No. Sorry it will dissolve and run off in rain.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good stuff 👏
*by A***R on 10 May 2023*

I had some hesitation because other reviewers said it didn't fit in a culking gun - they do in fact fit in a normal size skeleton/caulking gun. Someone else mentioned not getting nozzles, i got 3 nozzles with 3 tubes as expected. The sealant itself was easy to use when sealing round insulated plasterboard. I also used it as frame sealant around the window/plasterboard joints and round sill. Tooled off and cured really nicely. Between this sealant and insulated plasterboard the room is warmer and a little quieter. Will use again

### ⭐⭐⭐⭐ A good priced product and met with my expectations
*by A***R on 4 October 2020*

A good item which did the job just what I expected.

### ⭐⭐⭐⭐⭐ Good
*by S***Y on 8 December 2025*

Now my windows are quiet and less drafty

## Frequently Bought Together

- Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml
- Advanced Acoustics Premium Mass Loaded Vinyl Soundproofing Mat - 1.25m x 3m - 5kg/sqm - 2mm Thin
- Everbuild Stick 2 All Purpose High Bond Strength Contact Spray Adhesive, 500 ml, Beige

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-26*