---
product_id: 51302969
title: "Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml"
brand: "everbuild"
price: "VT7082"
currency: VUV
in_stock: true
reviews_count: 9
category: "Everbuild"
url: https://www.desertcart.vu/products/51302969-everbuild-everflex-ac50-contract-acoustic-sealant-and-adhesive-white-380
store_origin: VU
region: Vanuatu
---

# Paintable & easy cleanup Acoustic & intumescent barrier High grab & permanent flexibility Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml

**Brand:** everbuild
**Price:** VT7082
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal smart, sound sharp, and stay ahead of the curve!

## Quick Answers

- **What is this?** Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml by everbuild
- **How much does it cost?** VT7082 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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

- • **Soundproof Your Space:** Creates an acoustic and fire-resistant barrier by sealing gaps in walls, floors, and ceilings—quiet comfort guaranteed.
- • **Unmatched Flexibility & Grip:** Permanently flexible with superior adhesion to plasterboard, wood, metal, and blockwork for a rock-solid seal.
- • **Mould Resistant & Non-Flammable:** Engineered to resist mould growth and ensure safety with non-flammable properties, ideal for contract environments.
- • **Seamless Finish Ready for Paint:** Cures to a smooth, paintable surface that cleans up effortlessly—perfect for professional-grade results.
- • **Trusted by Pros, Loved by DIYers:** Highly rated with over 500 reviews, fitting standard caulking guns and including multiple nozzles for versatile application.

## Overview

Everbuild Everflex AC50 is a 380ml white acrylic sealant and adhesive designed for professional acoustic and intumescent sealing. It offers permanent flexibility, high grab adhesion to multiple surfaces, mould resistance, and is paintable after curing. Ideal for sealing gaps in plasterboard walls, floors, and ceilings, it enhances soundproofing and fire protection while being easy to apply and clean up.

## 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 | 6,352 in DIY & Tools ( See Top 100 in DIY & Tools ) 154 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/51EMqYoGsUL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 2](https://m.media-amazon.com/images/I/71Lj+c7pcKL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 3](https://m.media-amazon.com/images/I/81XKiJOLhOL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 4](https://m.media-amazon.com/images/I/71aMtUk9NTL.jpg)
![Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml - Image 5](https://m.media-amazon.com/images/I/61i78VZcYtL.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 Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-12*