--- title: "Silicone Sealant Kent | Mastic Applicators — SP Silicone Sealants" description: "Specialist silicone sealant and mastic applicators in Kent. 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[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 ![Glass facade and balustrade sealing on a London rooftop terrace](/__l5e/assets-v1/bdb24e25-1317-4c3d-98c9-dc088c490f88/cladding-curtain-walling-sealing-05.jpg)![Large indoor swimming pool with sealed movement joints and stone surround](/__l5e/assets-v1/0145e098-1f26-460f-8075-65f99ab38e5c/swimming-pool-silicone-sealing-after-02.jpg)![Grey kitchen with marble island worktop joints sealed throughout](/__l5e/assets-v1/5a331cb9-c636-4fb5-ab1c-8933d3064e2f/kitchen-silicone-sealing-after-07.jpg) Silicone Sealant & Mastic Specialists — Chatham, Kent # Chatham Based Silicone Sealant Specialists Covering London & the South East A family-run team with over 25 years in the trade, providing professional silicone sealant services for everything from bathrooms, kitchens and home improvements to new-build developments, commercial premises and large-scale construction projects. Free quotes — small jobs priced straight from your photos. [Request a free estimate](/contact)[07342 520584](tel:+447342520584) Free, no-obligation quotes · Small jobs priced from your photos · Family-run, Chatham based · Open Mon–Sat, 7am–7pm - £2m public liability - CITB accredited - CSCS carded - RAMS on request - 25+ years' experience - Mon–Sat, 7am–7pm Send us a photo — we'll quote it free Bath, shower tray, worktop or window perimeter: a couple of photos are usually enough for a fixed price on smaller jobs. [Get my free quote](/contact)[Email photos](mailto:spsilicone@mail.com) Free fixed quote ## Send us the job 25+ years in the sealant trade £2m public liability cover 12 specialist sealant services 10 areas covered across Kent & London 02 Who we work for ## One trade, two kinds of client — and equal focus on both ![Marble bathroom with an oval bath sealed to the surrounding stone floor](/__l5e/assets-v1/94e0b2f5-62c5-4231-9350-df681deda892/bathroom-silicone-sealing-after-08.jpg) ### Homeowners Sealant that has gone black, split or lifted is the fastest way to make a good bathroom look tired — and the slowest leak to notice. We cut the old bead out completely, prepare the substrate and reseal in a mould-resistant product, usually inside a single visit. - Bathrooms, wet rooms and shower trays - Kitchen worktops, splashbacks and sinks - Window and door perimeter sealing - Full removal and reseal of failed silicone ![Floor-to-ceiling glazing perimeter sealed in an empty London office space](/__l5e/assets-v1/7b736c15-a011-45c2-9e16-f0a67bd954d2/cladding-curtain-walling-sealing-03.jpg) ### Contractors & developers Sealant is the last trade on site and the first thing that gets inspected. We turn up with the right products, work to your programme and hand back joints that pass snagging — on office refurbishments, new builds, building refurbishments and schools. - Expansion and movement joint sealing - Cladding and curtain walling joints - Floor line and wall junction mastic - RAMS issued on request; CSCS carded 03 Services ## Specialist sealant work, from single joints to full packages - [ ![Marble spiral staircase joints sealed in a commercial building](/__l5e/assets-v1/0599e8eb-17c5-4315-932c-3b5d292fb75b/commercial-silicone-sealant-01.jpg) ](/services/commercial-silicone-sealant-application) ### [Commercial silicone sealant application](/services/commercial-silicone-sealant-application) Sealant packages for office refurbishments, new builds, building refurbishments and schools, worked to the main contractor's programme. - [ ![Crisp white silicone sealant line where a marble kitchen worktop meets a fluted splashback](/__l5e/assets-v1/81fc53a1-5c52-4b84-bd99-66cca8348ee6/kitchen-silicone-sealing-after-03.jpg) ](/services/bathroom-wet-room-kitchen-sealing) ### [Bathroom, wet room & kitchen sealing](/services/bathroom-wet-room-kitchen-sealing) Clean, watertight beads around baths, showers, trays and worktops — for homes in Chatham and for commercial washrooms alike. - [ ![Large glass sliding doors sealed to a timber-beamed opening](/__l5e/assets-v1/ecbc5ba9-a7e9-4177-bd7c-0b26a00a2cec/window-door-silicone-sealing-01.jpg) ](/services/window-door-silicone-sealing) ### [Window & door silicone sealing](/services/window-door-silicone-sealing) Perimeter sealing that keeps draughts and driving rain out of the building envelope, internally and externally. - [ ![Weatherproof external sealant joint between a black door frame and brickwork](/__l5e/assets-v1/253b7ff0-9d17-4ddd-9dc5-712c5de81689/external-silicone-sealant-after-01.jpg) ](/services/external-silicone-sealant) ### [External silicone sealant](/services/external-silicone-sealant) Weatherproof external joints specified for UK exposure and movement — brick, render, stone, cladding and copings. - [ ![External movement joint between brickwork panels prepared for expansion joint sealant](/__l5e/assets-v1/c1c8e7ae-2092-4629-a166-133251417d8a/external-silicone-sealant-before-02.jpg) ](/services/expansion-joint-sealing) ### [Expansion joint sealing](/services/expansion-joint-sealing) Correctly sized and backed movement joints that flex with the structure instead of splitting through the middle. - [ ![Neutral-cure silicone mastic applied to a stone tile floor-to-wall joint](/__l5e/assets-v1/a70f1c6d-6266-454c-b553-ad933839b6aa/floor-line-wall-joint-mastic-application-01.jpg) ](/services/floor-line-wall-joint-mastic) ### [Floor line & wall joint mastic](/services/floor-line-wall-joint-mastic) Consistent mastic lines to floor and wall junctions across large commercial areas — corridors, plant rooms and open floor plates. - [ ![Freshly replaced white silicone sealant in a grey stone-tiled shower corner after old sealant removal](/__l5e/assets-v1/0b254bf3-7d39-48da-9323-60631e7d5944/sealant-replacement-shower-corner-01.jpg) ](/services/sealant-replacement-removal-reseal) ### [Sealant replacement — removal & reseal](/services/sealant-replacement-removal-reseal) Old, split or blackened sealant cut out completely, substrate prepped and treated, then resealed properly. - [ ![Colour-matched silicone sealant cartridge used beside a yellow glass splashback](/__l5e/assets-v1/42471476-abc6-4674-8631-6e87af0c4057/colour-matched-silicone-sealant-01.jpg) ](/services/colour-matched-silicone-sealant) ### [Colour-matched silicone sealant](/services/colour-matched-silicone-sealant) Beads matched to grout, frames, stone or cladding so the joint disappears into the finish instead of framing it. - [ ![Large indoor swimming pool with sealed movement joints and stone surround](/__l5e/assets-v1/0145e098-1f26-460f-8075-65f99ab38e5c/swimming-pool-silicone-sealing-after-02.jpg) ](/services/swimming-pool-leisure-sealant) ### [Swimming pool & leisure sealant](/services/swimming-pool-leisure-sealant) Chlorine-resistant products for pool surrounds, changing areas and wet leisure environments. - [ ![Wet room sealed with mould-resistant white silicone around the shower area](/__l5e/assets-v1/aaf3c020-6391-42bf-9eb7-a10970e97d28/wet-room-silicone-sealing-after-01.jpg) ](/services/anti-mould-sealant) ### [Anti-mould sealant](/services/anti-mould-sealant) Mould-resistant products for bathrooms, wet rooms and washrooms that stay cleaner for longer. - [ ![Glazed office partition and meeting room screen with acoustic sealant applied to the perimeter framing joints](/__l5e/assets-v1/5b178dbf-57bc-4ae9-b3b0-48f2b550b8cc/acoustic-sealant-office-partition-01.jpg) ](/services/acoustic-sealant) ### [Acoustic sealant](/services/acoustic-sealant) Noise-reduction sealing to partitions, junctions and service penetrations where sound transfer matters. - [ ![Glass curtain wall sealed to terrazzo flooring with a thin neat silicone joint](/__l5e/assets-v1/d4b50d34-7e21-4b94-ad7b-b8cf87f2b4ec/cladding-curtain-walling-sealing-02.jpg) ](/services/cladding-curtain-walling-sealing) ### [Cladding & curtain walling sealing](/services/cladding-curtain-walling-sealing) Facade and curtain walling joints sealed to line and detail at height, from the access provided. [See all services in detail](/services) 04 How a job runs ## From first photo to a flawless finish Five stages, the same on a single bath reseal and on a full curtain walling package. The visual stays put while the stages move — scroll through to see how your job would run. ![Marble-tiled bathroom with freestanding bath and shower tray ready for silicone sealing in Kent](/__l5e/assets-v1/96bc50f5-5aaa-43bb-b227-407dc85aa3fb/marble-bathroom-bath-shower-tray-01.jpg) Step 01 — Tell us what you need 1. 01 ### Tell us what you need Call or send the form with a short description of the work. Domestic or commercial — both get the same attention. ![Marble-tiled bathroom with freestanding bath and shower tray ready for silicone sealing in Kent](/__l5e/assets-v1/96bc50f5-5aaa-43bb-b227-407dc85aa3fb/marble-bathroom-bath-shower-tray-01.jpg) 2. 02 ### Free, fixed quote Smaller jobs such as bath reseals can be quoted straight from photos. Larger and commercial jobs are quoted after a site visit. ![Kitchen worktop and splashback joints measured before a colour-matched reseal](/__l5e/assets-v1/81fc53a1-5c52-4b84-bd99-66cca8348ee6/kitchen-silicone-sealing-after-03.jpg) 3. 03 ### Booked and prepared We agree a date that fits your programme, issue RAMS if the site needs them, and confirm the products to be used. ![Curtain walling joints prepared on a commercial site before sealant application](/__l5e/assets-v1/d8ee498f-1ae2-497e-afc2-ae567559760f/cladding-curtain-walling-sealing-01.jpg) 4. 04 ### Sealed and tooled Old sealant cut out, substrate prepped, fresh bead applied to a straight line — and the area left tidy behind us. ![Freshly applied silicone bead tooled to a straight line along a bath edge](/__l5e/assets-v1/ba3a69e9-0236-44cf-9f5b-0c952de996d8/bathroom-silicone-sealing-after-06.jpg) 5. 05 ### Inspect and hand back We walk the work with you or your site manager, check every joint reads straight and clean, and only call it finished when it would pass snagging. ![Completed wet room silicone sealing checked over before handover](/__l5e/assets-v1/aaf3c020-6391-42bf-9eb7-a10970e97d28/wet-room-silicone-sealing-after-01.jpg) 05 Reputation ## A family-run team judged on the last job We are a family-run business and every enquiry comes to the people who do the work. That is why reputation matters more to us than volume — and why our reviews live on Google, in public, rather than as quotes we have typed out ourselves. [Read our Google reviews](https://maps.app.goo.gl/dNpRvHzxXRKNughJA)[Leave a review](https://g.page/r/CUz9AaKSDhiCEBM/review) 06 Service areas ## Based in Chatham, working across Kent and into London Our workshop base is at The Historic Dockyard in Chatham, and we travel daily across Kent, into Bexley and up to the City of London. If your postcode is not listed, call and ask — we will tell you straight away. [View all areas covered](/service-areas) - Sevenoaks - Tunbridge Wells - Maidstone - Kings Hill - Tenterden - Whitstable - Meopham - Bexley - City of London 07 Common questions ## Answers before you pick up the phone Still unsure whether your job is worth a call-out? Send a photo — small jobs can be quoted from pictures alone, at no cost. Do you work for homeowners as well as contractors?+ Yes — domestic and commercial work sit side by side. A single bathroom reseal gets the same standard of preparation and finish as an expansion joint package on a new build. How do you price work?+ Every job is quoted individually and quotes are free. We do not publish 'from' prices, because joint length, access and product all change the figure. Smaller jobs can be quoted from photographs; larger and commercial jobs are quoted after an in-person site visit. Which sealants do you use?+ We work with established trade brands including Mapei, Illbruck, CT1 and Arbo, and select job-specific products where they are needed — mould-resistant sealant for bathrooms and wet rooms, chlorine-resistant sealant around pools, and acoustic sealant where sound transfer matters. Are you insured and accredited for site work?+ Yes. We carry £2 million public liability insurance and hold CITB and CSCS accreditation. Risk Assessment Method Statements can be issued on request for commercial jobs. Can you match the sealant to our finish?+ Yes. Colour-matched silicone is available so the bead reads as part of the grout, frame, stone or cladding rather than a line drawn across it. How do we pay?+ Larger jobs are invoiced. Smaller jobs are settled by bank transfer. ## Get in touch today, we’ll take care of the rest Quotes are free, there is no obligation, and photos are usually enough for smaller work. Larger and commercial jobs are priced after a site visit at a time that suits your programme. [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.)