--- product_id: 51302969 title: "Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml" brand: "sika" price: "98.25 DT" currency: TND in_stock: true reviews_count: 10 category: "Sika" url: https://www.desertcart.tn/products/51302969-everbuild-everflex-ac50-contract-acoustic-sealant-and-adhesive-white-380 store_origin: TN region: Tunisia --- # Mould resistant & water resistant Certified acoustic barrier (S EN ISO 140/3) High strength & permanent flexibility Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml **Brand:** sika **Price:** 98.25 DT **Availability:** ✅ In Stock ## Summary > 🔇 Seal the noise out, lock the comfort in! ## Quick Answers - **What is this?** Everbuild Everflex AC50 Contract Acoustic Sealant and Adhesive, White, 380 ml by sika - **How much does it cost?** 98.25 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/51302969-everbuild-everflex-ac50-contract-acoustic-sealant-and-adhesive-white-380) ## Best For - sika enthusiasts ## Why This Product - Trusted sika brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Professionals:** Top-rated with 4.3 stars and proven reliability on diverse substrates. - • **Mould & Moisture Resistant:** Keeps your walls pristine and protected in humid environments. - • **Easy Application & Finishing:** Compatible with standard caulking guns and overpaintable for seamless integration. - • **Dual-Action Sealant & Adhesive:** Bonds plasterboard, wood, metal, and blockwork with lasting flexibility. - • **Unmatched Acoustic Performance:** Creates a certified soundproof barrier for quieter, more comfortable spaces. ## Overview Everbuild Everflex AC50 is a premium 380 ml white acrylic sealant and adhesive designed for professional use. It offers high strength and permanent flexibility, certified acoustic barrier performance to S EN ISO 140/3, and resistance to mould and moisture. Ideal for bonding plasterboard, wood, metal, and blockwork, it applies easily with standard caulking guns and is overpaintable, making it the go-to solution for soundproofing and sealing in modern construction. ## 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: Best sealant on the market - Great sealant ## 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. - High strength, permanently flexible acoustic sealant and adhesive - When used as an adhesive the formula bonds plasterboard to plasterboard and other common substrates including blockwork, wood and metal studding - When used as a sealant this formula remains permanently flexible whilst being resistant to mould, non flammable and over paintable - Using Everbuild Everflex AC50 as both a sealant and a adhesives in a area creates an acoustic barrier to S EN ISO 140/3 standard when applied correctly - Apply using a caulk, sealant / adhesive cartridge application gun, we recommend the Everbuild Power Pro Heavy Duty Sealant / Adhesive Cartridge Applicator Gun ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0012RLYJ6 | | Best Sellers Rank | 7,072 in DIY & Tools ( See Top 100 in DIY & Tools ) 160 in Sealers | | Brand | Sika | | Colour | White | | Compatible Material | Plasterboard, Kraft Lined Insulation Boards, Common Substrates, Most Surfaces | | Customer Reviews | 4.3 out of 5 stars 524 Reviews | | Global Trade Identification Number | 05029347600358, 05029347903268 | | Item Dimensions | 32 x 38 x 254 millimetres | | Item Form | Paste | | Item Weight | 0.64 Kilograms | | Item dimensions L x W x H | 32 x 38 x 254 millimetres | | Item weight | 0.64 Kilograms | | Manufacturer | Sika Everbuild | | Manufacturer Contact Information | Sika Everbuild 41 Knowsthorpe Way, Leeds LS9 0SW | | Manufacturer Part Number | AC50C4 | | Material | Acrylic | | Model Number | AC50C4 | | Number of Items | 12 | | Number of Packs | 1 | | Style | Compact | | Style Name | Compact | | Surface Recommendation | Wall | | Unit Count | 380.0 millilitre | | Water Resistance Level | Water Resistant | | Water resistance level | Water Resistant | ## Product Details - **Brand:** Sika - **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) ## 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 ### ⭐⭐⭐⭐⭐ Best sealant on the market *by M***4 on 8 April 2026* Great sealant ### ⭐⭐⭐⭐ Did the job *by S***S on 13 February 2023* This doesn't fit the standard size gun so be aware of that. I had to cut mine down to fit in my caulking gun. It adhered well and was easy to spread and fill the edges of the area I'm trying to reduce excess sound. It doesn't last very long and the nozzles it comes with seem to "waste" a large amount of filler in the tube. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/51302969-everbuild-everflex-ac50-contract-acoustic-sealant-and-adhesive-white-380](https://www.desertcart.tn/products/51302969-everbuild-everflex-ac50-contract-acoustic-sealant-and-adhesive-white-380) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-25*