--- title: "About SP Silicone Sealants — Specialist Applicators in Chatham, Kent | SP Silicone Sealants" description: "Owner-run specialist silicone sealant and mastic applicators based in Chatham, Kent. 25+ years' application experience, £2m public liability cover, CITB & CSCS accredited." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://www.spsiliconesealants.com/#organisation", "name": "SP Silicone Sealants Limited", "alternateName": "SP Silicone Sealants", "url": "https://www.spsiliconesealants.com/", "logo": "https://www.spsiliconesealants.com/favicon.png", "telephone": "+44 7342 520584", "email": "spsilicone@mail.com", "address": { "@type": "PostalAddress", "streetAddress": "The Historic Dockyard", "addressLocality": "Chatham", "addressRegion": "Kent", "postalCode": "ME4 4QX", "addressCountry": "GB" }, "sameAs": [ "https://maps.app.goo.gl/dNpRvHzxXRKNughJA", "https://www.instagram.com/spsilicone" ], "contactPoint": [ { "@type": "ContactPoint", "telephone": "+44 7342 520584", "email": "spsilicone@mail.com", "contactType": "customer service", "areaServed": "GB", "availableLanguage": "English" } ] }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://www.spsiliconesealants.com/#website", "name": "SP Silicone Sealants", "url": "https://www.spsiliconesealants.com/", "inLanguage": "en-GB", "publisher": { "@id": "https://www.spsiliconesealants.com/#organisation" } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.spsiliconesealants.com/" }, { "@type": "ListItem", "position": 2, "name": "About", "item": "https://www.spsiliconesealants.com/about" } ] }, { "@context": "https://schema.org", "@type": "LocalBusiness", "name": "SP Silicone Sealants Limited", "description": "Owner-run specialist silicone sealant and mastic applicators based in Chatham, Kent. 25+ years' application experience, £2m public liability cover, CITB & CSCS accredited.", "telephone": "+44 7342 520584", "email": "spsilicone@mail.com", "url": "/about", "sameAs": [ "https://www.instagram.com/spsilicone", "https://maps.app.goo.gl/dNpRvHzxXRKNughJA" ], "address": { "@type": "PostalAddress", "streetAddress": "The Historic Dockyard", "addressLocality": "Chatham", "addressRegion": "Kent", "postalCode": "ME4 4QX", "addressCountry": "GB" }, "geo": { "@type": "GeoCoordinates", "latitude": 51.3947, "longitude": 0.5285 }, "openingHoursSpecification": [ { "@type": "OpeningHoursSpecification", "dayOfWeek": [ "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ], "opens": "07:00", "closes": "19:00" } ], "areaServed": [ { "@type": "Place", "name": "Chatham" }, { "@type": "Place", "name": "Sevenoaks" }, { "@type": "Place", "name": "Tunbridge Wells" }, { "@type": "Place", "name": "Maidstone" }, { "@type": "Place", "name": "Kings Hill" }, { "@type": "Place", "name": "Tenterden" }, { "@type": "Place", "name": "Whitstable" }, { "@type": "Place", "name": "Meopham" }, { "@type": "Place", "name": "Bexley" }, { "@type": "Place", "name": "City of London" } ], "knowsAbout": [ "Commercial silicone sealant application", "Bathroom, wet room & kitchen sealing", "Window & door silicone sealing", "External silicone sealant", "Expansion joint sealing", "Floor line & wall joint mastic", "Sealant replacement — removal & reseal", "Colour-matched silicone sealant", "Swimming pool & leisure sealant", "Anti-mould sealant", "Acoustic sealant", "Cladding & curtain walling sealing" ] } ] --- SP. [07342 520584](tel:+447342520584)[spsilicone@mail.com](mailto:spsilicone@mail.com)Chatham, Kent Mon–Sat, 7am–7pm · Sunday closed [![SP Silicone Sealants logo](/__l5e/assets-v1/04f69d29-f7e4-4833-a846-7060bb9b1458/sp-logo-v5.webp)](/) [Home](/)[About](/about) Services Service Areas [Our Work](/our-work)[Contact](/contact)[07342 520584](tel:+447342520584)[Request Estimate](/contact) Menu [Home](/)/ About About us # Sealant Specialists in Chatham With 25+ Years on the Gun — Not a Sideline Trade Silicone and mastic is the only thing we do. That means a joint that stays watertight, stays clean and stays put — instead of a bead you are cutting out again in eighteen months because it was somebody's last job of the day. [Request a free estimate](/contact)[07342 520584](tel:+447342520584) Free fixed quotes in writing · £2m public liability cover · CITB & CSCS accredited · RAMS on request 25+ years sealant application experience £2m cover public liability insurance CITB & CSCS accredited on site Chatham based Kent, London & South East Our story ## A specialist trade, run by the people who do the work ### Who we help Two very different customers, held to the same standard. Homeowners, landlords and letting agents who want a bathroom, kitchen, window or external joint sealed properly and left clean. And main contractors, fit-out firms, facilities teams, schools and property managers who need a sealant package delivered inside a programme, with the paperwork already in the file. Small jobs matter to us. A single shower reseal is worth asking about, and it gets the same preparation and the same product selection as a curtain walling elevation. ### What we specialise in Silicone sealant and mastic application, and nothing else. We cover a wide range of domestic and commercial work — from bathrooms, wet rooms and kitchens to new-build developments, commercial premises and large-scale construction projects. Because it is all we do, we know which products work best for different applications, how to achieve a professional, long-lasting finish, and the importance of using the right preparation and application techniques. ### Experience depth More than twenty-five years of hands-on application across domestic and commercial work — occupied buildings, live sites, height access, long floor runs and heritage-era masonry. Enough time to have seen every way a joint can be got wrong. We are CITB and CSCS accredited, carry £2 million of public liability cover, and issue RAMS on request so a main contractor can induct us without chasing documents. ### Where we work We are based at The Historic Dockyard, Chatham, and work across Kent, London and the South East — Sevenoaks, Tunbridge Wells, Maidstone, Kings Hill, Tenterden, Whitstable, Meopham, Bexley, City of London and everywhere between. - [Chatham](/service-areas/chatham) - [Maidstone](/service-areas/maidstone) - [Sevenoaks](/service-areas/sevenoaks) - [Tunbridge Wells](/service-areas/tunbridge-wells) - [Kings Hill](/service-areas/kings-hill) - [Meopham](/service-areas/meopham) - [All areas](/service-areas) Mission & standards ## Seal it once, seal it so it lasts Our whole philosophy is that the bead is the cheap part. What costs money is the access, the disruption and the damage when a joint fails early. So we spend our time where it actually decides the outcome: specification, preparation and tooling. ### Product specified to the substrate Trade products from Mapei, Illbruck, CT1 and Arbo, chosen for the material, the movement and the exposure — neutral-cure against stone and masonry, anti-mould in wet areas, low-modulus where a joint has to flex. The product is named on your quote so it can be checked. ### Preparation before application Old sealant cut out in full rather than overlaid, joint faces cleaned and dried, primer where the manufacturer specifies it, and backing rod fitted where the joint needs depth control. Most sealant failures are preparation failures, not product failures. ### Consistency from start to finish As an owner-run company, we take personal responsibility for every job and do not subcontract our sealant work. This allows us to maintain the same high standards, with a consistent bead width, profile and finish throughout. ### Honest about what sealant can do We do not advertise a guarantee, and we will not sell you a bead where the real problem is failed pointing, a defective tray or a movement issue. We tell you plainly what service life a detail should give in its exposure — before you commit. ### On guarantees — straight answer We do not advertise a guarantee, and we would rather say so plainly than print a promise with conditions attached. What we commit to instead: the right product for the substrate, full removal and preparation before we seal, joints sized for the movement they will see, and an honest statement of what service life the detail should give in its exposure. If sealant is not the right fix, we will tell you that too. Proof, not adjectives ## What we can actually put in writing Every figure below is verifiable — insurance certificates, accreditation cards and written quotes. We do not publish job counts or response-time promises we cannot evidence. 25+ years of sealant application experience £2m public liability insurance cover CITB & CSCS accredited for commercial sites RAMS issued on request for commercial work Free fixed written quotes, photo quotes on small jobs Mon–Sat 7am–7pm, Sunday closed Response times vary by area and by how full the diary is. Rather than quote an average, we tell you at enquiry stage exactly which dates we can hold — and our [area pages](/service-areas) set out realistic travel times from Chatham. Next step ## Tell us about your project — we'll provide a free quote Send us a few details about the work required. Smaller jobs can often be quoted from photographs, while larger and commercial projects may require a site visit. We'll provide a clear, written quote with no obligation. [Request a free estimate](/contact)[07342 520584](tel:+447342520584) ![SP Silicone Sealants logo](/__l5e/assets-v1/ccba0574-1fb2-45c8-9c24-82adeb90c706/sp-logo-v5-light.webp) Specialist silicone sealant and mastic applicators serving domestic and commercial clients across Kent, London and the South East. [@SPSilicone](https://www.instagram.com/spsilicone) ### Opening Hours - Monday 7am – 7pm - Tuesday 7am – 7pm - Wednesday 7am – 7pm - Thursday 7am – 7pm - Friday 7am – 7pm - Saturday 7am – 7pm - Sunday Closed ### Contact - [07342 520584](tel:+447342520584) - [spsilicone@mail.com](mailto:spsilicone@mail.com) - The Historic Dockyard Chatham, Kent ME4 4QX ### Sealant Services - [Commercial silicone sealant application](/services/commercial-silicone-sealant-application) - [Bathroom, wet room & kitchen sealing](/services/bathroom-wet-room-kitchen-sealing) - [Window & door silicone sealing](/services/window-door-silicone-sealing) - [External silicone sealant](/services/external-silicone-sealant) - [Expansion joint sealing](/services/expansion-joint-sealing) - [Floor line & wall joint mastic](/services/floor-line-wall-joint-mastic) - [Sealant replacement — removal & reseal](/services/sealant-replacement-removal-reseal) - [Colour-matched silicone sealant](/services/colour-matched-silicone-sealant) - [Swimming pool & leisure sealant](/services/swimming-pool-leisure-sealant) - [Anti-mould sealant](/services/anti-mould-sealant) - [Acoustic sealant](/services/acoustic-sealant) - [Cladding & curtain walling sealing](/services/cladding-curtain-walling-sealing) - [All silicone sealant services](/services) ### Areas We Cover - [Sealant specialists in Chatham](/service-areas/chatham) - [Sealant specialists in Maidstone](/service-areas/maidstone) - [Sealant specialists in Sevenoaks](/service-areas/sevenoaks) - [Sealant specialists in Tunbridge Wells](/service-areas/tunbridge-wells) - [Sealant specialists in Kings Hill](/service-areas/kings-hill) - [Sealant specialists in Meopham](/service-areas/meopham) - [Sealant specialists in Tenterden](/service-areas/tenterden) - [Sealant specialists in Whitstable](/service-areas/whitstable) - [Sealant specialists in Bexley](/service-areas/bexley) - [Sealant specialists in the City of London](/service-areas/city-of-london) - [Every area we cover in Kent](/service-areas) Looking for something specific? We handle [bathroom silicone sealing in Chatham](/services/bathroom-wet-room-kitchen-sealing), [old sealant removal and reseal](/services/sealant-replacement-removal-reseal), [window and door perimeter sealing](/services/window-door-silicone-sealing), [commercial mastic applicators in Kent](/services/commercial-silicone-sealant-application), [expansion joint sealing for main contractors](/services/expansion-joint-sealing), [cladding and curtain walling sealing](/services/cladding-curtain-walling-sealing) and [swimming pool sealant work](/services/swimming-pool-leisure-sealant). See [photos of our recent sealant work](/our-work) or [meet the family-run team behind SP Silicone Sealants](/about). © 2026 SP Silicone Sealants Limited. All rights reserved. £2m public liability insurance · CITB & CSCS accredited [Privacy Policy](/privacy-policy)[Terms & Conditions](/terms-conditions)[Request an estimate](/contact) [Call Now](tel:+447342520584)[Free Estimate](/contact) [WhatsApp us ](https://wa.me/447342520584?text=Hi%20SP%20Silicone%20Sealants%2C%20I'd%20like%20a%20quote%20for%20some%20sealant%20work.)