--- product_id: 48886857 title: "Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic" brand: "sika" price: "HK$145" currency: HKD in_stock: true category: "Sika" url: https://www.desertcart.hk/products/48886857-everbuild-everflex-115-gp-building-mastic-grey-285ml-a-traditional store_origin: HK region: Hong Kong --- # 285ml Size Multi-Purpose Use Weather Resistant Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic **Brand:** sika **Price:** HK$145 **Availability:** ✅ In Stock ## Summary > 🔨 Seal the Deal with Everbuild! ## Quick Answers - **What is this?** Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic by sika - **How much does it cost?** HK$145 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/48886857-everbuild-everflex-115-gp-building-mastic-grey-285ml-a-traditional) ## 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 - • **Sleek & Stylish:** Mastic grey color blends seamlessly with any project. - • **Durable & Dependable:** Crafted to withstand the elements, ensuring longevity. - • **Seal with Confidence:** Perfect for both internal and external applications. - • **Effortless Application:** User-friendly design for quick and efficient use. - • **Precision in Every Drop:** Designed for joint pointing and sealing with ease. ## Overview The Everbuild Everflex 115 GP Building Mastic is a versatile 285ml sealant designed for both internal and external use. Its weather-resistant formula ensures durability, making it ideal for joint pointing and sealing in various applications. With a sleek mastic grey finish, it not only performs well but also looks great in any setting. ## Description Product Description Everbuild Everflex 115 Contract GP (General Purpose) Building Mastic is an oil-based compound intended for the general pointing and sealing of many joints in traditional forms of construction. This general purpose mastic provides an effective weatherproof seal that is overpaintable and adheres to most common surfaces including brick, wood, metals and glass. Typically used to seal composite sectional panels and low-movement vertical joints, the high solids formulation of this contract building mastic has excellent gap-filling properties. Once dry the weatherproof seal remains in a semi-dry state and remains permanently plastic beneath the surface skin. As a result, Everflex 115 is ideal for perimeter pointing of both internal and external door or window surround pointing and sealing. The grey colour blends easily with metal and painted finishes. Box Contains 1 x Everbuild EVBMASGY 115 General Purpose Building Mastic Grey 285 ml P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Manufacturer Contact Information Sika Everbuild 41 Knowsthorpe Way, Leeds LS9 0SW See more ## Features - Safety data sheet available on request. - 115 Gp Build Mastic - Size: 310ml - Brand: Everbuild ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0012X9R4Y | | Best Sellers Rank | 203,751 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,206 in Sealers | | Brand | Sika | | Colour | Mastic Grey | | Compatible Material | Concrete | | Container Type | Cartridge | | Customer Reviews | 4.1 4.1 out of 5 stars (251) | | Full Cure Time | 7 Days | | Global Trade Identification Number | 05029347601393 | | Included Components | 1 | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Type Name | 115 General Purpose Building Mastic Grey 310 ml | | Item Volume | 285 Millilitres | | Item Weight | 0.01 Ounces | | Manufacturer | Sika | | Manufacturer Contact Information | Sika Everbuild 41 Knowsthorpe Way, Leeds LS9 0SW | | Manufacturer Part Number | EVBMASGY | | Material | Plastic | | Model Number | MASGY | | Number of Pieces | 1 | | Other Special Features of the Product | weather resistant | | Specific Uses For Product | Door and Window Sealing, Joint Pointing | | Unit Count | 1.0 count | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Sika - **Item form:** Liquid - **Material:** Plastic - **Special feature:** weather resistant - **Specific uses for product:** Door and Window Sealing, Joint Pointing ## Images ![Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic - Image 1](https://m.media-amazon.com/images/I/51uoQ24jBML.jpg) ![Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic - Image 2](https://m.media-amazon.com/images/I/618UpyyI-1L.jpg) ![Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic - Image 3](https://m.media-amazon.com/images/I/41+PO96LFJL.jpg) ![Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic - Image 4](https://m.media-amazon.com/images/I/41sBBPNjxwL.jpg) ![Everbuild Everflex 115 GP Building Mastic, Grey, 285ml | A Traditional Oil-Based Pointing Mastic - Image 5](https://m.media-amazon.com/images/I/41FqdSjxZoL.jpg) ## Questions & Answers **Q: Will it fill cracks in concrete drive?** A: It should work ,don't know for how long though because most of these sealants dry and harden over time and need to remain flexible for a good seal **Q: My gap is only 3mm. Will this stuff be ok?** A: Hi,I bought this product to fill in the external gaps of my concrete sectional garage because the existing ones had perished and needed replacing. I was happy with this product found it easy to apply and use. However, I did this in February 2015 and now October 2015 I have found that the product in some areas has shrunk and broken away. My gaps in some areas were greater than 3 MM so perhaps I was expecting too much!! **Q: Would this product be suitable for filling a tiny gap (behind pipes) in the special flooring of a wet room?** A: You'd be better off with silicone, as this can take up to 2 weeks to dry completely **Q: What shade of grey is this?** A: Stone grey ## Frequently Bought Together - Everbuild – Everflex – 115 GP Building Mastic – for Joint Pointing and Sealing – Internal and External Use – Grey – 285ml - Stainless Steel Flat Finishing Trowel (11" x 4") Concrete Cement Drywall Plastering Tile Masonry Construction Hand Tools - Edward Tools Paint and Mud Mixer for Drill - Mixes 1 to 3 Gallons - 15 3/4" Length - 5/16" Hex Shaft - Zinc Plated Steel - Reinforced Weld - Non Slip Hex Head - Easy Clean - Paint Mixer Attachment --- ## 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.hk/products/48886857-everbuild-everflex-115-gp-building-mastic-grey-285ml-a-traditional](https://www.desertcart.hk/products/48886857-everbuild-everflex-115-gp-building-mastic-grey-285ml-a-traditional) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-08-16*