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

Facade and window perimeter sealing in Coombe, Kent

Facade joint and window perimeter sealing on commercial buildings throughout Coombe and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • New sealant peeling off old mastic
  • Damp patches beside frames after rain
  • Unsightly perimeter sealant on a visible elevation
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Facade sealing for Coombe sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Questions about Coombe

Can you keep pace with our programme in Coombe?

Yes. The mastic is planned around your key stages. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Can you work at a site such as Birnham Farm Business Centre, by Coombe?

Yes. Estates, retail parks and business parks around Coombe, Birnham Farm Business Centre among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.

Do you provide access for facade work?

That varies with the building and the access on offer. Share what access exists or is planned when you send details.

Who decides which product is used?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Are you fully insured?

Yes. Mastic Doctor is fully insured, public liability included.

Do you guarantee your work?

Yes. The 12-month guarantee covers our preparation and application, but not damage, misuse or other trades’ work.

Is any job too small?

Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.

Facade sealing in Coombe

Facade joints are the line of defence between the weather and the building fabric. When a perimeter bead splits or peels, water finds its way behind frames and into the structure. We remove failed sealant and install a new bead chosen for the joint and how far it moves. The enquiries we see most involve patch repairs that keep failing and failed seals around shopfront and entrance frames, on coping and flashing joints, shopfront frames and stone and brick facade joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Coombe, that means joint design, primers and backing rod as standard.

Construction in and around smaller places such as Coombe is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.

Where
Coombe (CT3, CT13)
Wider area
Kent
Cover
12 months on our workmanship
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

How a job runs

The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. For work around Coombe, we aim to finish in one visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.

  1. We plan access and the order of elevations with the client.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. We remove the old bead and check the edges are sound.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. Once signed off, the work carries our 12-month guarantee.

What we need from you

  • Send any specification or drawings in advance
  • Let us know about inductions and permits
  • Make sure the joints can be reached

Quotes

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call the office on 01277 525 020 or email drawings and photos.

Get a price

Related advice

Facade sealing around Coombe: what changes locally

At about 62 miles from central London, Coombe is within reach of the capital. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, so mastic packages have to keep pace with busy programmes. The South East is one of the drier parts of the UK. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so we time external mastic for dry faces and agree it with the site team.

Historic houses such as Goodnestone Park, 3.5 miles to the south-west of Coombe, are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products. Units on estates such as Birnham Farm Business Centre, 0.8 miles south of Coombe, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal. For a contractor at a hotel such as The Lion Hotel, 0.8 miles to the north-west of Coombe, the mastic often has to be finished before a reopening date.

Coombe is about 6 miles north-west of Deal, in Kent. If you’re looking for facade sealing in Coombe, we can help. Coombe is one of 931 places we cover in Kent for facade joints. London is covered too, around 62 miles from Coombe.

Work on facade joints is covered throughout CT3 and CT13. Streets here include Coombe Lane, Saunders Lane and Langdon Avenue. If your building is just outside Coombe, we cover Flemings (1 mile south-west), Ash (1 mile north-west), Weddington (1 mile north), Guilton (1 mile west) and Hammill Park (1 mile south). A short drive away, we cover Canterbury (9 miles west), Margate (8 miles north-east), Dover (9 miles south), Folkestone (14 miles south-west), Ramsgate (7 miles north-east) and Broadstairs (9 miles north-east).

Near you in Coombe

Locally, jobs take us to sites close to The Chequer Inn and Sandwich Technology School, among other places. The nearest railway station is Sandwich station, roughly 2.1 miles east of the centre. Well-known places in the area include White Mill (1.6 miles east). Not far away are Monk's Wall nature reserve.

Map of Coombe © OpenStreetMap contributors

Aftercare for building managers

For the best life from the joints:

  • Walk the elevations once or twice a year
  • Avoid patch repairs on failed facade joints
  • Confirm the survey covers external sealants in older buildings
  • Record the product and colour used on each elevation

If new signage, brackets or services are fixed through a sealed joint, the seal needs making good. Ask the installer to reseal it properly using a matching sealant.

In pre-2000 buildings, check the asbestos register before old sealant is cut out. Some older mastics contain it, and work stops until it’s tested if it’s suspected.

What the job involves on each surface

Brick and stone facades

Joints in natural stone need care to avoid staining. We use a product suitable for the stone where the specification names one, with masked edges for a clean line.

Window and door perimeters

Perimeter joints move as frames expand and contract in the sun. Rod placed at the right depth lets the bead stretch.

Doing it in-house

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

What affects the price in Coombe

There’s no standard rate for sealant work, since sites vary so much. What we take into account:

  • Site requirements such as inductions and permits
  • Working within restricted access windows
  • How much there is to seal
  • How much existing material needs removing

There’s no price list, because the scope varies so much from one building to the next. Call for a quote.

What we need to price the job

It doesn’t need to be a full survey. These details are enough to start:

  • The type of building and who uses it
  • Asbestos survey details if the building is older
  • Drawings or a marked-up plan, if available
  • When you need the work done

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.

Commercial clients in Coombe

CHAS accredited and a Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go with the quote.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Coombe can form part of a wider programme across Kent.

Accreditations

Trusted. Accredited. Insured.