The Mastic Doctor team standing beside their branded vans outside an office building
Kent · England

Swanscombe facade sealing

We carry out facade joint and window perimeter sealing on commercial buildings in Swanscombe and the surrounding area. Send photos or drawings for a fixed quote.

  • Previous reseals run over old sealant
  • Weathered facade joints that have lost their grip
  • Draughts around frames and panels
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Facade sealing for Swanscombe sites

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

What sealant work can’t fix

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Installing or repairing glazing systems
  • Damaged frames that need replacing
  • Providing access systems for the work

If in doubt, call 01277 525 020 or email us and we’ll say what we think before you book.

Where we work in Swanscombe

  • Window and door perimeters
  • Perimeter joints where frames meet the structure
  • Stone and brick facade joints
  • Shopfront frames
  • Coping and flashing joints
  • Cladding panel joints

How we handle facade sealing in Swanscombe

Weather decides a lot in facade sealing. The sealant needs a dry joint and temperatures inside the maker’s limits, and cold, damp starts can delay work. We build that into the programme and tell you if the forecast changes the plan. We work on coping and flashing joints, cladding panel joints and shopfront frames, and the usual reasons a site gets in touch are discoloured or dirty facade joints and facade joints cracked through the middle. Most enquiries from Swanscombe start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

Building work in places the size of Swanscombe is normally small-scale: a handful of new houses, barn conversions, a school or hall extension. Even a small site needs its perimeter and facade joints sized, backed and sealed properly.

We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant.

Where
Swanscombe (DA9, DA10)
Wider area
Kent
Cover
12 months on every job
Quote
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

From enquiry to sign-off

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. For a job in Swanscombe, the main thing is a clear picture of the work. You’ll then get a fixed price for the work.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. We remove the old bead and check the edges are sound.
  4. Faces are cleaned, primed where needed and backed.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. Once signed off, the work carries our 12-month guarantee.

What we need from you

  • Share the asbestos register for older buildings
  • Flag any permit to work we will need
  • Have the specification and drawings to hand

Getting a fixed quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call 01277 525 020 or email drawings and photos with what you know.

Ask for a quote

Related advice

Why it’s worth doing now in Swanscombe

A few metres of new sealant compare well with replacing ceilings, linings or damaged stock. Leaks travel along the structure, so the real damage is often some distance away. In a smaller place such as Swanscombe, getting a contractor back for a second visit takes time, so we’d suggest renewing all the joints that are going, not just the worst.

The product called for affects the cost, and so does the preparation. Access, phasing and site rules also count.

What you get with us

  • Work to your specification and the manufacturer’s guidance
  • Constructionline member for supplier checks
  • Public liability insurance in place
  • Commercial sealant work since 2005

Take a look at what affects the cost and how we’re accredited.

Your questions answered

Is Swanscombe off your patch?

No. Small places get the same service as large ones. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Can you work around term dates at a campus such as University of Greenwich?

Yes, holiday working periods are the norm on campus jobs. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Is it fine to apply new sealant on top of old?

No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

Do you take on small jobs?

Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.

Do you offer coloured sealant?

It depends on the product specified. Some ranges are wide, others limited, so we’ll confirm the colours available for the specified product with the quote.

Do you hold CHAS accreditation?

Yes. We’re CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.

How do I request a quote?

The quote form is the simplest route, though you can also ring 01277 525 020 or send photos by email. Photos, drawings or a joint schedule help us quote quickly.

What the job involves on each surface

Cladding panel joints

Panel joints on cladding and rainscreen systems take movement every day. The sealant has to match the movement and the panel finish, often a low-modulus silicone or hybrid.

Render and coated surfaces

Where the joint will be painted over, a paintable hybrid or PU sealant may suit. We confirm the product with you before starting.

New build and refits around Swanscombe

Several hotels sit less than 2 miles from Swanscombe. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight. Central London is about 17 miles from Swanscombe. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand.

When a school such as Knockhall Primary School is extended or refurbished, the mastic package is often squeezed into the holidays. Recladding or extending a unit at a site like Galley Hill Trading Estate, 0.7 miles east of Swanscombe, brings panel joints and frame perimeters into the programme. When a college such as South Essex College, 2.3 miles to the north-east of Swanscombe, builds or refurbishes, the mastic package usually has to fit around students and staff.

Swanscombe is about 3 miles east of Dartford, in Kent. We send applicators to Swanscombe for facade joints. We work across 931 places in Kent, from busy centres to rural villages. We also cover London, around 17 miles from Swanscombe.

We take on facade joints across the DA9 and DA10 postcode area. If your site is on London Road, Craylands Square and High Street or close by, we can quote for facade joints. Main routes into Swanscombe include the A206 and A226, which helps when planning parking and deliveries for the job. Close to Swanscombe, our area also takes in Greenhithe (1 mile north-west), Stone (1 mile west), Bean (1 mile south), West Thurrock (2 miles north) and Darenth (2 miles south-west). Bigger towns within reach include Dartford (3 miles west), Sevenoaks (12 miles south), Gravesend (4 miles east), Northfleet (3 miles south-east), Swanley (6 miles south-west) and Kings Hill (13 miles south).

Near you in Swanscombe

Recent enquiries here include premises near Castle Hill Park, The Ebbsfleet Academy and The Pier Hotel. The closest station to Swanscombe is Greenhithe for Bluewater station, roughly 0.5 miles west of the centre. A little further out are Stone Castle (0.7 miles south-west) and Bluewater (1 mile south-west). Open spaces near Swanscombe include Sawyers Lake and Chafford Gorges Nature Park.

Map of Swanscombe © OpenStreetMap contributors

Aftercare for building managers

Every sealant joint needs some looking after, and how long they last depends on how they’re treated. Our advice:

  • Avoid patch repairs on failed facade joints
  • Keep sills, gutters and drainage paths clear
  • Ask about asbestos in pre-2000 mastic
  • Investigate damp beside windows promptly

Blocked sills and gutters push water at the joints. Sealant copes better when water runs off the facade as designed rather than sitting against the joints.

Tie resealing in with redecoration, cladding repairs or other access. One set-up for several trades saves money.

What affects the price in Swanscombe

The price varies from site to site. It mainly depends on:

  • The product specified
  • Induction, permit and paperwork requirements
  • Whether old sealant has to be cut out first
  • Travel to remote or island sites

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.

Details that help us quote

Whether it’s one area or a whole building, the same details help:

  • Whether the building will be occupied during the work
  • When you need the work done
  • Asbestos survey details if the building is older
  • The product your specification calls for

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to call the office on 01277 525 020 or email a schedule or drawings.

Accreditations

Trusted. Accredited. Insured.