--- product_id: 160083780 title: "Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand" brand: "stormdry" price: "489.65 DT" currency: TND in_stock: true reviews_count: 13 category: "Stormdry" url: https://www.desertcart.tn/products/160083780-waterproof-express-repair-mortar-pack-of-3-ready-to-use store_origin: TN region: Tunisia --- # Quick 4-hour drying time Water-resistant, long-lasting seal Polymer-modified for crack resistance Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand **Brand:** stormdry **Price:** 489.65 DT **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Fix it fast, fix it right β€” waterproof repairs that blend in and stand out! ## Quick Answers - **What is this?** Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand by stormdry - **How much does it cost?** 489.65 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/160083780-waterproof-express-repair-mortar-pack-of-3-ready-to-use) ## Best For - stormdry enthusiasts ## Why This Product - Trusted stormdry brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Fast-Drying Formula:** Complete repairs and weatherproofing treatments in a single day with a 4-hour cure time. - β€’ **Seamless Visual Blend:** Matches sand mortar perfectly, maintaining your wall’s aesthetic integrity. - β€’ **Durable Waterproof Seal:** Protect your walls with a repair that stands up to rain and weather over time. - β€’ **Ready-to-Use Convenience:** Apply straight from the cartridgeβ€”no mixing, no mess, just fast repairs. - β€’ **Flexible & Crack-Resistant:** Polymer-enhanced mortar flexes with your building, preventing future cracks and damage. ## Overview Stormdry Waterproof Express Repair Mortar is a ready-to-use, polymer-modified cement mix designed for quick, durable repairs on interior and exterior masonry. Packaged in convenient 310ml cartridges, it offers a fast 4-hour drying time and long-lasting waterproof protection. Its flexible formula prevents cracking and visually blends with standard sand mortar, making it ideal for sealing cracks up to 1 cm wide and prepping walls for further weatherproofing treatments. ## Description Product Description Stormdry XR-Mortar is a repointing mortar for walls and should not be used in ground contact. The ready-to-use express repair mortar comes pre-packaged in a 310ml mastic cartridge. Simply apply the mortar directly to cracks and defects of up to 1 cm width using the supplied nozzle and a standard mastic gun. Once cured, XR-Mortar provides a long-lasting and waterproof repair that will visually blend in with most standard sand and cement mortars. The pre-packaged design allows for quick repairs to small areas without the need to source and mix materials, saving both time and money. Stormdry XR-Mortar is also fully compatible with Stormdry Masonry Protection Cream, meaning it is the ideal way to prepare walls which need small localised repairs before weatherproofing. XR-Mortar's quick 4-hour drying time also allows for both repairs and Stormdry Masonry Protection Cream treatment to be carried out in 1 day. Ready-to-use straight from the cartridge Easy application using the supplied nozzle Suitable for repairs up to 1 cm in width Repairs are long-lasting and waterproof Blends in visually with sand & cement mortar Fully compatible with Stormdry Masonry Protection Cream Paint or wall treatments (Stormdry Masonry Protection Cream) can be applied after only 4 hours. 48 hours drying time. 2 weeks full cured depending on conditions. Not suitable for use below 5Β°C or when rain is forecast. Not suitable for whole wall repointing. Stormdry Express Mortar cures by evaporation of moisture. In cold and damp conditions this drying process can be slowed, especially when applied in thick layers. For thick applications, it may be necessary to apply the mortar in two layers to achieve an even cure. When applying the second coat push the mortar into the first coat for a good bond. Always read the technical datasheet before applying. Application Instructions Wet the surface Clean away debris and wet the area to be repaired. Cut threaded cap Cut the threaded cap of the XR mortar cartridge. Screw nozzle Screw on the supplied application nozzle. Attach to mastic gun Insert the cartridge into a standard size mastic gun. Fill nozzle Pump the gun trigger until XR-Mortar fills the nozzle. Apply XR Mortar Carefully apply XR-Mortar into the crack or defect. Smooth over Smooth over the XR-Mortar using a wetted pointing trowel. Match substrate colour Match colour by rubbing the mortar with dust from the substrate. Polymer-modified formulation During our stress test, Stormdry Express Mortar outperformed other similar repair mortars available on the market, showing enhanced characteristics and maintaining its structure. Due to its polymer-modified formulation, it remains semi-flexible after drying delivering crack-free, long-lasting, waterproof repairs. Competitor Mortar #1 Slight bending: Adhesion issues and cracks. Competitor Mortar #2 Slight bending: cracks. Stormdry Express Mortar Presented no issues after the test. Review: Easy to use and does what it says on the tube! - WOW!! I never knew this existed! As a self taught DIYer, I used this to fill in gaps under my window frames where the installers hadn't! I was anxious on how it would work, but honestly it is such an amazing product. Easy to use, very easy to spread once applied and dried quickly. Its been few months since the application and I am happy to report that it does what it says on the 'tube'! So easy when you know how! Looks good and blended in with the rest of the mortar. Review: Looks great and easy to use - Works exactly as described and is very easy to apply. Sets quickly, seals repairs well and provides good waterproof protection. Ideal for quick fixes and exterior repairs. ## Features - Contains reaction mass of 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (3:1)(55965-84-9), 1,2-benzisothiazol-3(2H)-one; 1,2-benzisothiazolin-3-one (2634-33-5). May produce an allergic reaction. - βœ”οΈ Ready-to-use straight from the cartridge, for interior and exterior use. - βœ”οΈ Water-resistant: Long-lasting waterproof repairs. - βœ”οΈ Suitable for the repair of damaged pointing sealing cracks to prevent rain penetration and plugging DPC holes - βœ”οΈ Blends in visually with Sand mortar. Other colours can be matched by rubbing the mortar with dust from the substrate. - βœ”οΈ Crack Resistant: Increased flexibility allowing contraction and expansion of adjacent construction materials without cracking. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07WHZH3XD | | Best Sellers Rank | 3,165 in DIY & Tools ( See Top 100 in DIY & Tools ) 6 in Cement | | Brand | Stormdry | | Colour | Grey | | Compatible Material | Brick | | Country Of Origin | United Kingdom | | Customer Reviews | 4.4 out of 5 stars 553 Reviews | | Item Dimensions | 60 x 250 x 60 centimetres | | Item Form | Paste | | Item dimensions L x W x H | 60 x 250 x 60 centimetres | | Item form | Paste | | Manufacturer | Safeguard Europe Ltd | | Manufacturer Part Number | STORMDRY-XR-MORTAR-PARENT DE-FBA | | Material | Polymer | | Model Number | AM-XR MORTAR | | Number of Items | 3 | | Style | Mortar | | Style Name | Mortar | | Unit Count | 930.0 millilitre | | Water Resistance Level | Water Resistant | | Water resistance level | Water Resistant | ## Product Details - **Brand:** Stormdry - **Item dimensions L x W x H:** 60 x 250 x 60 centimetres - **Item form:** Paste - **Material:** Polymer - **Water resistance level:** Water Resistant ## Images ![Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand - Image 1](https://m.media-amazon.com/images/I/71O1gB5ks2L.jpg) ![Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand - Image 2](https://m.media-amazon.com/images/I/91cuRaUGXyL.jpg) ![Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand - Image 3](https://m.media-amazon.com/images/I/91-cod+eEuL.jpg) ![Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand - Image 4](https://m.media-amazon.com/images/I/91ZuFJG-e8L.jpg) ![Waterproof Express Repair Mortar - Pack of 3 - Ready to Use Cement Mix 310ml Tube, Grey Sand - Image 5](https://m.media-amazon.com/images/I/61cZBO1fsML.jpg) ## Available Options This product comes in different **Item Package Quantity** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to use and does what it says on the tube! *by M***A on 29 May 2026* WOW!! I never knew this existed! As a self taught DIYer, I used this to fill in gaps under my window frames where the installers hadn't! I was anxious on how it would work, but honestly it is such an amazing product. Easy to use, very easy to spread once applied and dried quickly. Its been few months since the application and I am happy to report that it does what it says on the 'tube'! So easy when you know how! Looks good and blended in with the rest of the mortar. ### ⭐⭐⭐⭐⭐ Looks great and easy to use *by R***N on 2 February 2026* Works exactly as described and is very easy to apply. Sets quickly, seals repairs well and provides good waterproof protection. Ideal for quick fixes and exterior repairs. ### ⭐⭐⭐⭐ does what its made for *by R***A on 13 January 2026* very happy with this product it filled all the gaps where the pointing had fallen out and was fairly easy to use --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/160083780-waterproof-express-repair-mortar-pack-of-3-ready-to-use](https://www.desertcart.tn/products/160083780-waterproof-express-repair-mortar-pack-of-3-ready-to-use) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-30*