--- title: "Acoustic Sealant in Chatham, Kent | Partition & Junction Sealing" description: "Acoustic sealant application in Chatham and across Kent. Partition heads, perimeters and service penetrations sealed to protect tested sound performance. 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Partition heads, perimeters and service penetrations sealed to protect tested sound performance. Free quotes.", "serviceType": "Acoustic sealant", "provider": { "@type": "LocalBusiness", "name": "SP Silicone Sealants Limited", "telephone": "+44 7342 520584", "email": "spsilicone@mail.com", "address": { "@type": "PostalAddress", "streetAddress": "The Historic Dockyard", "addressLocality": "Chatham", "addressRegion": "Kent", "postalCode": "ME4 4QX", "addressCountry": "GB" } }, "areaServed": [ "Chatham", "Kent", "London", "South East England" ] }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How is acoustic sealing priced?", "acceptedAnswer": { "@type": "Answer", "text": "By measured run, taken off your drawings and confirmed on site. Quotes are free and fixed in writing, with the acoustic product named so it can be checked against the specification." } }, { "@type": "Question", "name": "Can I just use normal silicone instead?", "acceptedAnswer": { "@type": "Answer", "text": "It may look the same in the joint, but it is not tested as part of the partition system and does not carry the performance data. Where a specification, test or Building Regulations requirement is involved, use the acoustic-grade product." } }, { "@type": "Question", "name": "When in the programme do you need to be on site?", "acceptedAnswer": { "@type": "Answer", "text": "At first fix for perimeter and head seals, before the outer lining closes the interface, and again after services are installed to seal penetrations. We plan both visits with your site manager rather than trying to do everything in one pass." } }, { "@type": "Question", "name": "Will acoustic sealant fix a noise problem on its own?", "acceptedAnswer": { "@type": "Answer", "text": "It removes the air paths around the partition, which is often the single largest weakness. If the wall build-up itself is inadequate for the noise you are dealing with, sealing will improve matters but not transform them — and we will say so honestly." } }, { "@type": "Question", "name": "How long does it last?", "acceptedAnswer": { "@type": "Answer", "text": "Acoustic sealants remain permanently flexible and, once behind linings, are not exposed to UV or weather, so they are effectively a life-of-build detail. Exposed beads at skirting lines can be damaged mechanically and are easy to reinstate. We do not advertise a guarantee." } }, { "@type": "Question", "name": "Can you seal partitions after a failed sound test?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We investigate where the flanking paths are, seal accessible perimeters, penetrations and skirting lines, and coordinate with your acoustician on what needs opening up. Remedial work in finished areas is always slower than sealing at first fix." } }, { "@type": "Question", "name": "Can the sealant be painted?", "acceptedAnswer": { "@type": "Answer", "text": "Where the bead is within a decorated area, we specify a paintable acoustic product. Tell us at quote stage so the right product is used — paint will not adhere to cured silicone." } }, { "@type": "Question", "name": "Do you do fire-rated sealing at the same time?", "acceptedAnswer": { "@type": "Answer", "text": "No. Fire-rated and intumescent sealing is not a service we offer or advertise; it should be priced with a dedicated fire-stopping contractor, and it is a separate discipline from acoustic sealing even where the interfaces look similar." } }, { "@type": "Question", "name": "Do you work in occupied buildings?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — remedial acoustic sealing in occupied offices, schools and apartment buildings is common. We phase work, protect finishes and keep areas usable where possible." } }, { "@type": "Question", "name": "Which areas do you cover?", "acceptedAnswer": { "@type": "Answer", "text": "Kent, London and the South East from our base at The Historic Dockyard in Chatham, including Maidstone, Sevenoaks, Tunbridge Wells, Kings Hill, Meopham, Whitstable, Tenterden, Bexley and the City of London." } } ] } ] --- [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 ![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) [Home](/)/ [Services](/services)/ Acoustic sealant Acoustic sealing — commercial & residential # Acoustic Sealant in Chatham partitions that perform as well as they were specified A partition is only as quiet as its weakest gap. Perimeters, heads, abutments and service penetrations sealed with acoustic-grade products so the wall delivers the sound reduction it was designed and paid for. [Request a free estimate](/contact)[07342 520584](tel:+447342520584) £2m public liability cover, CITB and CSCS accredited, RAMS on request, and quotes taken free from your drawings. £2m cover public liability insurance CITB & CSCS accredited on site RAMS on request for commercial jobs Free quotes photo quotes on small jobs Chatham based Kent, London & South East 01 The service ## What this work involves — and who it is for ### What acoustic sealing involves Acoustic sealant closes the air paths around and through a partition so that sound cannot bypass the wall build-up. In practice that means sealing partition perimeters at floor, head and abutments, sealing behind skirtings and at wall-to-wall junctions, sealing service penetrations, socket boxes and duct passes, and sealing the junctions between drylining and structure. It is a small-volume material with a large effect. A partition rated for a given sound reduction achieves that rating in a laboratory with all its edges sealed. On site, an unsealed 3mm gap running the length of a wall head can undo a significant part of that performance, because sound travels through air far more efficiently than through plasterboard and insulation. ### Who it is for Main contractors, developers and fit-out contractors delivering offices, schools, healthcare spaces, hotels, apartments and studios where acoustic performance is specified, tested or subject to Building Regulations compliance. Also residential clients and developers converting flats, building extensions or creating home offices, studios and media rooms — anywhere a wall or floor has been built specifically to reduce noise transfer and needs sealing to actually deliver it. ### When it is needed During partition construction and first fix, before linings are boarded and closed — many acoustic seals are applied at the perimeter of the first board layer and become inaccessible afterwards. Sealing at the right moment in the sequence is what makes acoustic sealant effective rather than decorative. It is also needed remedially: where sound testing has failed, where occupants report speech privacy or noise complaints between rooms, or where later trades have cut through completed partitions to run services and left the penetrations open. ### Why professional application matters Acoustic sealant is the cheapest line item in an acoustic strategy and the one most often mishandled. It has to be continuous — a bead that stops at every stud, or restarts with gaps, leaves the exact flanking paths it was specified to close. It also has to be the right product: a general-purpose silicone that looks identical is not tested as part of the partition system and does not carry the same performance data. Sequencing is the other trap. Sealant applied after boarding, decoration or skirting installation cannot reach the interface it was supposed to seal. Doing this properly means being on site at the right point in the programme, sealing to the system manufacturer's detail, and leaving the work in a state that an acoustician or building control inspector can verify. 02 Recent work ## Acoustic sealant — completed jobs ![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) [See the full gallery](/our-work) 03 What it costs to leave it ## A failed seal never stays a small problem Acoustic failures are discovered late, at testing or after occupation, when the partitions are boarded, decorated and full of furniture. That is what makes them expensive: the fix is behind finishes that have already been signed off. ### Failed sound tests before handover A partition that misses its specified reduction because of unsealed perimeters means retesting, remedial access through completed linings and a delayed handover — all after the acoustician's report lands. ### Noise complaints after occupation Speech privacy failures in offices, consulting rooms, classrooms and apartments generate complaints that cannot be answered with decoration. The remedy is invasive work in an occupied building. ### Regulatory and contractual exposure Where sound insulation is a Building Regulations or contractual requirement, an unsealed partition is a compliance problem, not a snag — with retention and certification tied to it. ### Mistakes we get called out to fix - Using general-purpose silicone in place of a tested acoustic sealant because they look the same in the joint. - Applying the seal after boarding and decoration, when the interface that needed sealing is already covered. - Leaving intermittent beads with gaps at studs, so a continuous flanking path remains along the wall. - Leaving service penetrations, socket boxes and duct passes unsealed after other trades have cut through. - Sealing only the visible face of a partition head while the deflection head or void above stays open. 04 How a job runs ## The order of work, start to finish ![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) Step 01 — Drawing & specification review 1. 01 ### Drawing & specification review We check the acoustic specification and system details to identify which interfaces need sealing and at what stage of the build-up. ![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) 2. 02 ### Free quote & programme fit A fixed written price against measured runs, with the acoustic product named and our visits planned into the boarding sequence. ![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) 3. 03 ### First-fix sealing Perimeters, heads, abutments and penetrations sealed at the correct point in the build-up, before linings close the interface. ![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) 4. 04 ### Second-fix & penetrations Later penetrations, socket boxes, duct passes and skirting lines sealed once services are in, keeping every path closed. ![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) 5. 05 ### Verification walk We walk the completed runs with your site manager or acoustician so the sealing can be recorded before testing. ![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) 05 What you get ## The difference a properly detailed finish makes ### Partitions that hit their rating Continuous sealing closes the flanking paths that quietly strip performance from an otherwise correctly built wall. ### Sound tests passed first time Sealing done to the system detail, at the right stage, removes the most common reason a partition underperforms on test. ### Speech privacy that holds up Consulting rooms, meeting rooms, classrooms and apartments stay private, which is what occupants actually judge the building on. ### No invasive remedial work Getting the seal in before boarding avoids cutting back into finished, decorated linings after a failed test. ### Tested products, named on the quote Acoustic-grade sealants specified and recorded, not substituted for whatever general-purpose product is on site. ### Programmed into the sequence We work to the boarding and services sequence, so our visits land when the interfaces are actually accessible. 06 In detail ## Materials, methods and the variations we cover ### Materials: acoustic-grade sealants Acoustic sealing uses products developed and tested for the purpose, drawn from established trade ranges including Mapei, Illbruck, CT1 and Arbo. These sealants remain permanently flexible so the seal is not broken by structural movement or deflection, and they are formulated with the density and body to close air paths effectively rather than simply bridging them cosmetically. Product selection depends on interface and finish. Paintable acoustic sealants are used where the bead is within a decorated area, because paint will not hold on cured silicone. Flexible silicone-based acoustic products are used at movement-prone junctions and deflection heads, where the seal has to accommodate structural movement without splitting. Where the joint is wide or irregular, acoustic-grade backing materials and closed-cell rod are used to control depth so the sealant works as a continuous membrane rather than a thin skin over a void. Fire-rated and intumescent products are a separate discipline that we do not offer or advertise. ### Method: continuity and sequence Acoustic sealing is judged on continuity. Every bead is applied as an unbroken run along the interface — floor track perimeters, head details, abutments to columns and structure, and both faces of the partition where the specification requires it. Gaps at studs, missed sections behind services and short restarts are precisely the flanking paths the seal exists to remove, so runs are set out to be completed in single passes and inspected along their full length. Sequence is equally decisive. Perimeter seals are applied to the first board layer or track before the outer lining closes access. Service penetrations, socket boxes and duct passes are sealed after services are installed but before linings and decoration are complete. Deflection heads are sealed with products that tolerate movement, so the seal survives the structure flexing above it. We plan our visits around that sequence with the site manager instead of arriving once, sealing what is visible and leaving the rest inaccessible. ### Where acoustic sealant applies Partition perimeters at floor, head and abutments. Deflection and movement head details. Drylining to structure junctions. Wall-to-wall and wall-to-soffit junctions. Service penetrations, cable and pipe passes, and duct crossings. Socket, switch and back-box perimeters. Riser and shaft wall junctions. Floor-to-wall junctions beneath skirtings. Ceiling perimeter junctions in acoustically rated ceilings. Studio, meeting room, consulting room and classroom partitions. Hotel bedroom and apartment separating walls. Home offices, media rooms and studio spaces in residential work. In existing buildings the same products are used remedially: sealing penetrations opened up by services work, sealing partition heads left open in earlier fit-outs, and closing skirting-line gaps found during investigation of a noise complaint. ### Commercial and residential differences Commercially, acoustic sealant is a specification and compliance item. It gets recorded, inspected and often tested, so what matters is working to the system detail, being on site at the right stage, and leaving evidence of continuous sealing before linings close. RAMS are issued on request, our CITB and CSCS accreditation covers site induction, and £2 million public liability cover is in place. Residentially, the driver is usually a specific irritation — noise between flats, a home office next to a living room, a media room, or a converted loft. The work is smaller and the same rules apply: seal the perimeter continuously, seal every penetration, use a tested product and get in before the linings are closed. On conversions where sound insulation is a Building Regulations requirement, the sealing is part of demonstrating compliance rather than an optional refinement. 07 Questions ## What customers ask before booking How is acoustic sealing priced? By measured run, taken off your drawings and confirmed on site. Quotes are free and fixed in writing, with the acoustic product named so it can be checked against the specification. Can I just use normal silicone instead? It may look the same in the joint, but it is not tested as part of the partition system and does not carry the performance data. Where a specification, test or Building Regulations requirement is involved, use the acoustic-grade product. When in the programme do you need to be on site? At first fix for perimeter and head seals, before the outer lining closes the interface, and again after services are installed to seal penetrations. We plan both visits with your site manager rather than trying to do everything in one pass. Will acoustic sealant fix a noise problem on its own? It removes the air paths around the partition, which is often the single largest weakness. If the wall build-up itself is inadequate for the noise you are dealing with, sealing will improve matters but not transform them — and we will say so honestly. How long does it last? Acoustic sealants remain permanently flexible and, once behind linings, are not exposed to UV or weather, so they are effectively a life-of-build detail. Exposed beads at skirting lines can be damaged mechanically and are easy to reinstate. We do not advertise a guarantee. Can you seal partitions after a failed sound test? Yes. We investigate where the flanking paths are, seal accessible perimeters, penetrations and skirting lines, and coordinate with your acoustician on what needs opening up. Remedial work in finished areas is always slower than sealing at first fix. Can the sealant be painted? Where the bead is within a decorated area, we specify a paintable acoustic product. Tell us at quote stage so the right product is used — paint will not adhere to cured silicone. Do you do fire-rated sealing at the same time? No. Fire-rated and intumescent sealing is not a service we offer or advertise; it should be priced with a dedicated fire-stopping contractor, and it is a separate discipline from acoustic sealing even where the interfaces look similar. Do you work in occupied buildings? Yes — remedial acoustic sealing in occupied offices, schools and apartment buildings is common. We phase work, protect finishes and keep areas usable where possible. Which areas do you cover? Kent, London and the South East from our base at The Historic Dockyard in Chatham, including Maidstone, Sevenoaks, Tunbridge Wells, Kings Hill, Meopham, Whitstable, Tenterden, Bexley and the City of London. ## Related sealant services - [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. - [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. - [Expansion joint sealing](/services/expansion-joint-sealing) Correctly sized and backed movement joints that flex with the structure instead of splitting through the middle. - [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. - [All sealant services](/services) ## Where we work Based at The Historic Dockyard in Chatham, covering Kent, London and the South East — including Sevenoaks, Tunbridge Wells, Maidstone, Kings Hill, Tenterden, Whitstable and City of London. [Acoustic sealant in Chatham](/service-areas/chatham)[Acoustic sealant in Maidstone](/service-areas/maidstone)[Acoustic sealant in Sevenoaks](/service-areas/sevenoaks)[Acoustic sealant in Tunbridge Wells](/service-areas/tunbridge-wells)[Acoustic sealant in Kings Hill](/service-areas/kings-hill)[Acoustic sealant in Meopham](/service-areas/meopham)[Acoustic sealant in Tenterden](/service-areas/tenterden)[Acoustic sealant in Whitstable](/service-areas/whitstable)[Acoustic sealant in Bexley](/service-areas/bexley)[Acoustic sealant in the City of London](/service-areas/city-of-london) [See all service areas](/service-areas) ## Make the partitions perform on test, not just on paper Send the drawings and the acoustic specification. We will take off the runs, name the tested products and fit our visits into the boarding sequence — free fixed quote, RAMS on request. [Request a free estimate](/contact)[Call 07342 520584](tel:+447342520584) £2m public liability cover · CITB & CSCS accredited · RAMS on request · Mon–Sat, 7am–7pm · Sunday closed ![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. 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