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

Facade and window perimeter sealing in Folkestone, Kent

Need facade sealing in Folkestone? It’s simple: send details, get a quote, we seal, guaranteed.

  • Failed sealant on precast panel joints
  • Draughts around frames and panels
  • Weathered facade joints that have lost their grip
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Facade sealing across Folkestone

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

About our facade sealing in Folkestone

Some clients need every window on a block resealed; others need a few leaking frames sorted. The approach doesn’t change with the size: cut out, clean, back, prime where needed and seal. A 12-month guarantee applies to our workmanship. If you have sealant pulling away from frames or panels and hard, chalky sealant that no longer flexes, we can put it right, on window and door perimeters, stone and brick facade joints and perimeter joints where frames meet the structure alike. One point of contact handles commercial sealant work in Folkestone from the first photos to the final walk-round, for single jobs and planned programmes alike.

Older town-centre buildings in places like Folkestone are often converted to new uses or extended, so new windows and cladding meet old masonry. Getting the product and primer right for both faces is what keeps those joints sound.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Folkestone (CT20, CT19, CT21)
Wider area
Kent
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

Your questions answered

Can being near the sea in Folkestone affect the sealant we need?

It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.

Would you work within a site like Royal Victoria Hospital?

Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is the work guaranteed?

Yes. Our workmanship is backed for 12 months.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to.

Is old mastic on our building likely to contain asbestos?

It’s worth checking in any building from before 2000. The dutyholder holds the asbestos register. Suspect material is left alone until it has been tested.

Can staff carry on working while you are here?

Usually, yes. Phased work can be planned so areas stay in use.

Are you CHAS accredited and on Constructionline?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

Different surfaces, different methods

Coping and flashing joints

Where the specification calls for sealant at copings or flashings, we can seal them. These joints take full exposure to weather.

Render and coated surfaces

Paintable sealants exist for joints that will be coated. The choice depends on the specification and finish.

When to call us in Folkestone

Sun, rain and temperature swings wear facade sealant down over the years. The bead hardens, chalks on the surface and loses the flexibility to follow the joint.

What tends to prompt an enquiry:

  • Cladding panel joints that have opened up
  • Air leaks through failed facade joints
  • Perimeter sealant that has split or peeled away
  • Perimeter joints where frames meet the structure

When a college such as Folkestone College, under half a mile south of Folkestone, builds or refurbishes, the mastic package usually has to fit around students and staff.

What to look for in a quote

  • Which product they’ll use, and why it suits the joint
  • Who will actually carry out the work
  • Health and safety accreditation such as CHAS
  • Their approach to joint depth and backing

How to choose a sealant contractor

For managing agents and facilities managers

We work for building owners and managing agents on everything from one building to a spread of sites around Folkestone. Several sites can go on one quote, so there’s one set of paperwork to deal with.

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

Aftercare for building managers

Once the work is signed off, a little attention goes a long way:

  • Clear debris that holds water against joints
  • Avoid patch repairs on failed facade joints
  • Check the asbestos register before old mastic is disturbed
  • Keep pressure washers away from fresh sealant

Following storms, look inside for damp or staining near frames. An early report normally means a small reseal rather than a bigger repair.

Coordinate facade sealing with other external works. Sharing the access keeps the cost down and limits disruption.

Facade sealing around Folkestone: what changes locally

Folkestone lies within about 1 mile of the sea. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. There are a good number of hotels within about 2 miles of Folkestone. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included.

University estates such as University Centre Folkestone (to the east of Folkestone) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. Work at a hotel such as The Park Inn Hotel (to the south-east of Folkestone) tends to be programmed around bookings, mastic included.

Folkestone is in Kent. Businesses, contractors and managing agents in Folkestone can call on us for facade joints. 931 places across Kent fall within our area, Folkestone among them. Our Brighton page has more on work in that area (59 miles or so).

Anyone looking for facade sealing in CT20, CT19 and CT21 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. For a building on Christ Church Road, Middelburg Square and Station Road or nearby, we can quote for facade joints. Main routes into Folkestone include the A259 and A260, which helps when planning parking and deliveries for the job. Close to Folkestone, our area also takes in Cheriton (1 mile west), Sandgate (1 mile south-west), Hawkinge (2 miles north), Arpinge (2 miles north-west) and Seabrook (2 miles west). A short drive away, we cover Ashford (14 miles west), Canterbury (14 miles north), Dover (7 miles north-east), Deal (13 miles north-east), Hythe (4 miles west) and Tower Hamlets (7 miles north-east). As one of the bigger centres in Kent, Folkestone has a broad mix of commercial, public and industrial buildings, and we cover them all.

Landmarks near Folkestone

Locally, jobs take us to sites close to The Park Inn Hotel, Lower Leas Coastal Park and The Harvey Grammar School, among other places. Folkestone has its own railway station: Folkestone Central station. Other landmarks nearby include Folkestone Museum (0.7 miles south-east) and Folkestone Castle (1 mile north). For a walk, there’s Sugar Loaf Hill.

Map of Folkestone © OpenStreetMap contributors

Why it’s worth doing now in Folkestone

Failed joints let in more than water: occupants notice draughts and cold spots around windows. Resealing deals with the draught as well as the leak. In a town such as Folkestone, a lot of buildings are older and have been altered over time, and joints where old meets new tend to fail first. Renewing them before water gets in protects the fabric.

We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we’ll price your job on its own details.

Why choose Mastic Doctor in Folkestone

  • A range of standard colours, depending on the product
  • CHAS accredited contractor
  • Work to your specification and the manufacturer’s guidance
  • Our applicators hold CSCS cards

See what affects the cost or our accreditations.

From enquiry to sign-off

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, and the work typically takes anything from a single day to several weeks, depending on joint lengths, access and the weather. For a town like Folkestone, we try to group jobs for the same client into one visit, with one quote covering them. Give us your access times and we will fit the work in.

  1. We look at the joints, the drawings and the access before pricing.
  2. The old bead is cut away completely, not overlaid.
  3. Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
  4. Closed-cell rod fixes the depth, and the sealant grips two sides only.
  5. A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
  6. The completed runs are checked with you, then the 12-month guarantee applies.

Getting the site ready

  • Make sure the joints can be reached
  • Tell us which areas need to stay in use
  • Send your site hours and access windows

Getting a fixed quote

Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. For smaller jobs, photos and a description will do.

Get a price

Related advice

Accreditations

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