--- product_id: 23167743 title: "Mortar Repair Sealant" brand: "sika" price: "Β£10.65" currency: GBP in_stock: true reviews_count: 13 category: "Sika" url: https://www.desertcart.co.uk/products/23167743-mortar-repair-sealant store_origin: GB region: United Kingdom --- # Paintable, stainable & sandable finish Limestone color blends seamlessly Polyurethane elasticity resists cracks Mortar Repair Sealant **Brand:** sika **Price:** Β£10.65 **Availability:** βœ… In Stock ## Summary > 🧱 Fix it right, blend it tight β€” mortar repair that’s built to last! ## Quick Answers - **What is this?** Mortar Repair Sealant by sika - **How much does it cost?** Β£10.65 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/23167743-mortar-repair-sealant) ## 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 - β€’ **Flex That Lasts:** One-component polyurethane formula ensures tear-resistant elasticity - β€’ **Custom Finish Ready:** Paint, stain, or sand post-cure to perfectly match your style - β€’ **Seamless Surface Sync:** Specially textured limestone hue for flawless mortar matching - β€’ **Versatile Application:** Works on vertical & horizontal joints; cures on moisture contact - β€’ **Certified Quality Seal:** Meets ASTM & federal standards with radon-reducing urethane base ## Overview Sikaflex Mortar Fix is a polyurethane-based, limestone-colored sealant designed to repair and blend with rough mortar surfaces. Its flexible, elastomeric formula resists cracking and tearing, while being paintable and sandable for a professional finish. Certified to meet industry standards, it cures on contact with moisture and is suitable for both vertical and horizontal applications, ensuring durable, waterproof mortar repairs. ## Description Is your brick wall showing cracks or gapping in its mortar? If left unattended, the damage will only worsen, as water infiltrates and expands. Fortunately, Sikaflex limestone mortar fix is the perfect solution. This polyurethane-based mortar repair and sealant is textured to blend seamlessly to rough, stucco-like surfaces. It features strong adhesion and superior elasticity to allow movement between surfaces, which helps prevent damage to the sealant and results in a stronger bond. Maximum depth of joint should not exceed 1/2-inch for optimal performance. It also hides imperfections from tooling that smooth sealants can't match, so your handiwork looks more professional. Review: Does the job - Does the job..used it to fill in some small areas of missing mortar in brick..good stuff Review: Works good I will definitely buy somewhere - Works good very happy with product ## Features - DESIGNED TO BLEND β€” Sikaflex mortar fix sealant is specially textured to better blend with rough, stucco-like surfaces, while the limestone color makes the blend seamless - RETAINS EXCELLENT ELASTICITY β€” The one-component polyurethane-based elastomeric sealant cures to a flexible consistency, improving resistance to tears and cracking - READY YOUR BRUSHES β€” Once cured, the sealant is paintable, stainable, and sandable, so it's easy to match the style of the surrounding features. Just be sure to use oil, water, or rubber-based paints - SEAL OF APPROVAL β€” Sikaflex concrete sealant meets federal and industry standards for quality and performance, and is urethane-based to reduce production of radon for a cleaner environment - DEAL FOR BOTH VERTICAL AND HORIZONTAL β€” Insert cartridge into any standard caulk gun to apply. Begins to cure on contact with atmospheric moisture. Allow up to 7 days for final cure ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001AQ0CA6 | | Best Sellers Rank | #32,035 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #110 in Hardware Sealers | | Brand | SIKA | | Brand Name | SIKA | | Color | Limestone | | Compatible Material | Metal | | Customer Reviews | 4.3 out of 5 stars 609 Reviews | | Global Trade Identification Number | 00033886002622 | | Included Components | Sealant | | Item Dimensions | 11.5 x 2 x 11.5 inches | | Item Form | Paste | | Item Part Number | 757210 | | Item Type Name | Sealant | | Item Weight | 16 ounces | | Item dimensions L x W x H | 11.5 x 2 x 11.5 inches | | Manufacturer | SIKA CORPORATION | | Material | Polyurethane | | Material Type | Polyurethane | | Model | 187784 | | Number of Items | 1 | | Part Number | 187784 | | Style | Compact | | Style Name | Compact | | Supported Standards | ASTM C 920, Type S, Grade NS; TT-S-00230C, Type II | | Surface Recommendation | Window | | UPC | 033886093910 033886002622 | | Unit Count | 10.1 Fluid Ounces | | Warranty Description | SIKA warrants this product for one year from date of installation to be free from manufacturing defects and to meet the technical properties on the current Product Data Sheet | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** SIKA - **Item Weight:** 16 ounces - **Item dimensions L x W x H:** 11.5 x 2 x 11.5 inches - **Material:** Polyurethane - **Style:** Compact ## Images ![Mortar Repair Sealant - Image 1](https://m.media-amazon.com/images/I/617+mJb7y6L.jpg) ![Mortar Repair Sealant - Image 2](https://m.media-amazon.com/images/I/81FKOJKEFkL.jpg) ![Mortar Repair Sealant - Image 3](https://m.media-amazon.com/images/I/91Rx4QMozFL.jpg) ![Mortar Repair Sealant - Image 4](https://m.media-amazon.com/images/I/A1Lj-ysdWxL.jpg) ![Mortar Repair Sealant - Image 5](https://m.media-amazon.com/images/I/71XDRfgfHDL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can this be mixed with a little paint to blend with mortered joints?** A: No, Sikaflex Mortar Fix can’t mixed with paint or any other colorant. Once cured, it is paintable, and will adhere to the cured polyurethane - based sealant. **Q: Do you really have to wait a week to paint?** A: It really would be a good idea but it depends on how thick you are going to apply, as it does take a while to dry on the inside. **Q: what thrust ration of a caulking gun to use for this product?** A: Normal thrust.Comes out very good.Great product. **Q: How big of an area does one tube cover?** A: Small crack in Stucco walll. about 25 feet ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does the job *by S***R on October 17, 2025* Does the job..used it to fill in some small areas of missing mortar in brick..good stuff ### ⭐⭐⭐⭐⭐ Works good I will definitely buy somewhere *by K***E on December 3, 2025* Works good very happy with product ### ⭐⭐⭐⭐⭐ Mortar Fix *by S***N on November 12, 2023* This is just the right texture & consistency for caulking the limestone of my house. There were hairline cracks in the limestone where I could see daylight from the garage to outside. Filling the cracks horizontally is easy with this product as it doesn’t easily leak out. I used this product name for self leveling sidewalks & the driveway also. Very happy with this brand. Be sure to use something such as paper towel or rag to catch the flow till you get it in the upright position. Otherwise quite messy. ## Frequently Bought Together - Sikaflex Mortar Fix, Limestone, Polyurethane sealant for repairing damaged mortar, joints and gaps. Sealing mortar cracks 10.1 fl. oz Cartridge - Sikaflex Concrete Fix, Limestone, Elastic sealant sealing cracks and joints, paintable polyurethane , 10.1 fl. Oz - M-D Building Products - Versatile Gray Foam Backer Rod Set 1/2in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71480) --- ## 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.co.uk/products/23167743-mortar-repair-sealant](https://www.desertcart.co.uk/products/23167743-mortar-repair-sealant) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-30*