--- product_id: 49998705 title: "Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use" brand: "bostik" price: "Β£21.17" currency: GBP in_stock: true reviews_count: 9 category: "Bostik" url: https://www.desertcart.co.uk/products/49998705-bostik-rapid-setting-cement-10kg-fast-setting-20-minute-waterproof store_origin: GB region: Great Britain --- # 20-min rapid set waterproof & weatherproof high-strength bond Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use **Brand:** bostik **Price:** Β£21.17 **Availability:** βœ… In Stock ## Summary > β³πŸ’§ Fix it fast, fix it rightβ€”because time and durability wait for no one. ## Quick Answers - **What is this?** Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use by bostik - **How much does it cost?** Β£21.17 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/49998705-bostik-rapid-setting-cement-10kg-fast-setting-20-minute-waterproof) ## Best For - bostik enthusiasts ## Why This Product - Trusted bostik brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Versatile Fix-It Power:** Perfect for everything from pipe seals to concrete patching. - β€’ **Industrial-Grade Strength:** Durable enough for drains, patios, and structural fixes. - β€’ **Ready to Mix, Zero Hassle:** Just add water and applyβ€”no guesswork, no mess. - β€’ **Waterproof & Weatherproof:** Reliable performance indoors and outdoors, rain or shine. - β€’ **Lightning-Fast 20-Minute Set:** Get emergency repairs done before your coffee cools down. ## Overview Bostik Rapid Setting Cement is a premium 10kg fast-setting mortar that cures in just 20 minutes, offering a waterproof, high-strength repair solution for both indoor and outdoor concrete and drain fixes. Simply add water to the ready-mixed powder for a smooth, durable finish ideal for emergency repairs, structural patching, and versatile DIY projects. ## Description Shop Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use. Free delivery on eligible orders of Β£20 or more. Review: waterproof and quick drying - I bought this as we had 2 small holes around the edges of the deep kitchen drain which was discovered by the professional who came to unblock it. He said we needed to get it repaired to prevent the waste water damaging our foundations. I mixed up a small quantity of the mixture in an old plastic pot and stirred it with an old gardening knife. It mixed up like icing sugar. I got it to a stiff consistency and filled up the gaps. To ensure it dried I used a hairdryer on it for a while, and did not use the drain for a couple of hours. The product is very easy to use, and as I wore plastic gloves made no mess. I never bother to check sizes and assumed when I ordered the product it would come in a small pot. The container is huge, and I could hardly lift it. I will embark on further filling on the garden path , weather permitting, and will offer some to my neighbour as she may wish to use some. This is a truly excellent product, easy to use, and very good value. Review: Good but costly but still worth paying for use in the job at hand - The patio at the side of the house was laid badly where the motar was not of recommended mix during the winter months. Unknown to us it was virtuyally all sand with only a skim of cement mixture at very top. Therefore needed scoop it all out and re-point with proper mixture of cement & motar. Instead of using standard pack of 25kg cement at <Β£5, decided to use this as it is pre-mixed (but not ready-mixed; the user has to add water). By chance I ordered 3. This allowed most of the first bucket to be put into buckets 2 and 3 and leave 1kg or 2 kg in the first bucket with which to mix in some water. For the task above I could only manage to dig out on average 5 feet of old material between the slabs then re-point using this Bostik cement. This Bostik is expensive as compared to standard bag of cement but it is quick setting; strong enough for me to step on the slabs the next day to continue the task of repointing the other slabs. I have also a bucket of Blue Circle Extra Quck Setting cement, which is even more expensive, but which proved to be too quick setting for me to use - a professional brick layer may be proficiently fast to use that Blue Circle Extra Quick cement. I must also say it is mostly cement rather than a motar mixture. Also, depended how (quick or much) you use it, I could only use 1-2 kg at a time, some parts have dried white in colour, some sandy white, some light grey. At the moment noticed it tended to be sandy white from material at the bottom of the bucket - assuming heavier sand sunk to the bottom than the cement p;owder which stayed at the top of the bucket. After comparing with rest of the available versions of cement and different brands, conclusion is it may be expensive but fair as compared to standard and Extra Quick cement. It is also convenient to use; it is quick enough for me to continue work next day but slow enough for my lack of builders' skills (I am better at carpentry). More importantly, during this continued pandemic times, this remains available some of the time whereas standard bags of cement is like gold dust for their non-availability. Update. Been doing the pation repairs for a month or two for the past 4 years. The repairs I made in 2021 were done around October. Maybe the the cold night temperatures when it dropped to single figures, say 5 degrees or less, and with damp was the reason why the repairs did not last well; cracks in my handiwork showed up within a few months. (Yes it could also be my inexperience too). I am wondering if the freezing at night (expansion by ice ???) was the cause, but don't know for sure. It could also be that the locations were the worse parts of the patio so settled unevenly as we walked on it. Anyway, with these suspicions in mind, the repairs I made in 2025 were done from late August to last week of September, where the night temperatures were definitely no less than 8 degrees (according to Met Office forecast). Lo and behold, with all the rain of winter 25-26 and some freezing nights, no crack have yet shown themselves among the repairs made in 2025. (That's 6 months of the worse weather thrown at it.) Ergo, lesson learnt is, if there is a choice of wether conditions to do the repairs, select mild + dry days and nights. Another thing I discovered was that the "professional" patio layer short changed us. Didn't know that was possible until discovering there is way too low and insufficient sand below the Indian Sandstone slabs. This is another reason to use this Bostik as I was hoping by forcing as much as possible of this Bostik down into the gaps between the stones, some of it might go sideways when it reached underneath the stones to support them otherwise it would be a mega job to rip everything up to put more sand down before re-laying. So, apart from the repairs in 2021, all the subsequent years' efforts have held. (Yes it has been slow but it's not sensible to force the pace either because for each slab, one could only clear out one edge out of 4 edges at a time so as not to destabilise it entirely; hence could only repair one edge here and another edge of another slab a few slabs away etc. To repair one slab, it takes 8 days before it could be walked upon; one day per edge to be worked, a day between to dry secure.... so on.)) Now I am raising the score to 5 stars as I believe this is a good product for a DIY'er (after gaining a bit of experience of using it). ## Features - Causes serious eye damage. - Causes skin irritation. - May cause an allergic skin reaction. - May cause respiratory irritation. - ⏳ Sets in Just 20 Minutes – Perfect for emergency repairs, patching, and quick installation projects. - πŸ’§ Waterproof & Durable – Suitable for interior and exterior use, including drains, paths, steps, and concrete surfaces. - πŸ—οΈ Strong & Reliable Bond – Creates a high-strength repair solution for cracks, leaks, and structural fixes. - πŸ”¨ Multi-Purpose Use – Ideal for sanitary installations, fixing drainage systems, and filling service apertures around pipes. - βœ… Easy to Use & Mix – Simply add water (0.25L per 1kg of cement), mix, and apply with a trowel for a smooth, hassle-free finish. - Contents: 1x Bostik Cementone Rapid Setting Cement, Colour: Grey, 10kg ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01D8FRG9Q | | Best Sellers Rank | 71 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Cement | | Brand | Bostik | | Colour | Grey | | Compatible Material | Concrete | | Container Type | Pail | | Customer Reviews | 4.5 4.5 out of 5 stars (7,454) | | EU Spare Part Availability Duration | 20 Minutes | | Full Cure Time | 24 Hours | | Global Trade Identification Number | 05010591540163 | | Included Components | 1x Bostik Cementone Rapid Setting Cement, Colour: Grey, 10kg | | Item Form | Powder | | Item Package Quantity | 1 | | Item Type Name | Bostik Cementone Rapid Setting Cement | | Manufacturer | Bostik | | Material | Cement | | Model Number | 30812809 | | Other Special Features of the Product | Waterproof | | Product Warranty | No guarantee | | Specific Uses For Product | Craft | | Unit Count | 10000.0 gram | | Viscosity | High Viscosity | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Bostik - **Item form:** Powder - **Material:** Cement - **Special feature:** Waterproof - **Specific uses for product:** Craft ## Images ![Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use - Image 1](https://m.media-amazon.com/images/I/61GKU-A-slL.jpg) ![Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use - Image 2](https://m.media-amazon.com/images/I/611wvVzoHFL.jpg) ![Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use - Image 3](https://m.media-amazon.com/images/I/61Dk5mfOe3L.jpg) ![Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use - Image 4](https://m.media-amazon.com/images/I/61rvRfuaK1L.jpg) ![Bostik Rapid Setting Cement 10kg - Fast-Setting 20 Minute Waterproof Repair Mortar - Ready Mixed, Just Add Water - Strong & Durable - For Drain Repairs & Concrete Fixing - Indoor & Outdoor Use - Image 5](https://m.media-amazon.com/images/I/612gnWq1hOL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is this waterproof?** A: YES, I repaired holes and cracks in exterior steps a few months ago and I have not had a problem. **Q: Can I use this for laying edging stones** A: You can but it dries white and does not look great. **Q: Is this 5 kg or 10kg - tub shows 5kg - description says 10kg?** A: 10kg. Hard to mix 2.5lts of water into this tub even though v large, I'd suggest a mixer or doing jobs in increments with a separate container. **Q: Is this good for over soil and under artificial grass? Will it last?** A: I think it would crack for that purpose. I would try sand if you need to level the ground under artificial grass. ## Customer Reviews ### ⭐⭐⭐⭐⭐ waterproof and quick drying *by M***L on 12 October 2023* I bought this as we had 2 small holes around the edges of the deep kitchen drain which was discovered by the professional who came to unblock it. He said we needed to get it repaired to prevent the waste water damaging our foundations. I mixed up a small quantity of the mixture in an old plastic pot and stirred it with an old gardening knife. It mixed up like icing sugar. I got it to a stiff consistency and filled up the gaps. To ensure it dried I used a hairdryer on it for a while, and did not use the drain for a couple of hours. The product is very easy to use, and as I wore plastic gloves made no mess. I never bother to check sizes and assumed when I ordered the product it would come in a small pot. The container is huge, and I could hardly lift it. I will embark on further filling on the garden path , weather permitting, and will offer some to my neighbour as she may wish to use some. This is a truly excellent product, easy to use, and very good value. ### ⭐⭐⭐⭐ Good but costly but still worth paying for use in the job at hand *by E***R on 25 October 2021* The patio at the side of the house was laid badly where the motar was not of recommended mix during the winter months. Unknown to us it was virtuyally all sand with only a skim of cement mixture at very top. Therefore needed scoop it all out and re-point with proper mixture of cement & motar. Instead of using standard pack of 25kg cement at <Β£5, decided to use this as it is pre-mixed (but not ready-mixed; the user has to add water). By chance I ordered 3. This allowed most of the first bucket to be put into buckets 2 and 3 and leave 1kg or 2 kg in the first bucket with which to mix in some water. For the task above I could only manage to dig out on average 5 feet of old material between the slabs then re-point using this Bostik cement. This Bostik is expensive as compared to standard bag of cement but it is quick setting; strong enough for me to step on the slabs the next day to continue the task of repointing the other slabs. I have also a bucket of Blue Circle Extra Quck Setting cement, which is even more expensive, but which proved to be too quick setting for me to use - a professional brick layer may be proficiently fast to use that Blue Circle Extra Quick cement. I must also say it is mostly cement rather than a motar mixture. Also, depended how (quick or much) you use it, I could only use 1-2 kg at a time, some parts have dried white in colour, some sandy white, some light grey. At the moment noticed it tended to be sandy white from material at the bottom of the bucket - assuming heavier sand sunk to the bottom than the cement p;owder which stayed at the top of the bucket. After comparing with rest of the available versions of cement and different brands, conclusion is it may be expensive but fair as compared to standard and Extra Quick cement. It is also convenient to use; it is quick enough for me to continue work next day but slow enough for my lack of builders' skills (I am better at carpentry). More importantly, during this continued pandemic times, this remains available some of the time whereas standard bags of cement is like gold dust for their non-availability. Update. Been doing the pation repairs for a month or two for the past 4 years. The repairs I made in 2021 were done around October. Maybe the the cold night temperatures when it dropped to single figures, say 5 degrees or less, and with damp was the reason why the repairs did not last well; cracks in my handiwork showed up within a few months. (Yes it could also be my inexperience too). I am wondering if the freezing at night (expansion by ice ???) was the cause, but don't know for sure. It could also be that the locations were the worse parts of the patio so settled unevenly as we walked on it. Anyway, with these suspicions in mind, the repairs I made in 2025 were done from late August to last week of September, where the night temperatures were definitely no less than 8 degrees (according to Met Office forecast). Lo and behold, with all the rain of winter 25-26 and some freezing nights, no crack have yet shown themselves among the repairs made in 2025. (That's 6 months of the worse weather thrown at it.) Ergo, lesson learnt is, if there is a choice of wether conditions to do the repairs, select mild + dry days and nights. Another thing I discovered was that the "professional" patio layer short changed us. Didn't know that was possible until discovering there is way too low and insufficient sand below the Indian Sandstone slabs. This is another reason to use this Bostik as I was hoping by forcing as much as possible of this Bostik down into the gaps between the stones, some of it might go sideways when it reached underneath the stones to support them otherwise it would be a mega job to rip everything up to put more sand down before re-laying. So, apart from the repairs in 2021, all the subsequent years' efforts have held. (Yes it has been slow but it's not sensible to force the pace either because for each slab, one could only clear out one edge out of 4 edges at a time so as not to destabilise it entirely; hence could only repair one edge here and another edge of another slab a few slabs away etc. To repair one slab, it takes 8 days before it could be walked upon; one day per edge to be worked, a day between to dry secure.... so on.)) Now I am raising the score to 5 stars as I believe this is a good product for a DIY'er (after gaining a bit of experience of using it). ### ⭐⭐⭐⭐⭐ Cement *by D***N on 22 March 2026* Good job. Easy to use. ## Frequently Bought Together - Bostik Rapid Setting Cement – 10kg – Fast-Setting 20min, Waterproof & Strong – Ideal for Patching, Drain Repairs & Concrete Fixing – Interior & Exterior Use - Faithfull FAISGTPT6 Soft-Grip Pointing Trowel 150mm (6in) - Faithfull FAISGTGAUG7 Soft-Grip Gauging Trowel 175mm (7in) --- ## 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/49998705-bostik-rapid-setting-cement-10kg-fast-setting-20-minute-waterproof](https://www.desertcart.co.uk/products/49998705-bostik-rapid-setting-cement-10kg-fast-setting-20-minute-waterproof) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-23*