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

Facade and window perimeter sealing in Cranbrook, Kent

Facade sealing for Cranbrook, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Cladding panel joints that have opened up
  • Hard, chalky sealant that no longer flexes
  • Perimeter joints where frames meet the structure
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Facade sealing across Cranbrook

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

Aftercare for building managers

For the best life from the joints:

  • Keep pressure washers away from fresh sealant
  • Insist on a full cut-out when joints are renewed
  • Share access with other external trades
  • Inspect facade joints on a regular cycle

Look at perimeter and panel joints as part of routine building checks. Signs to look for are cracking, edges lifting, chalking and stiffness.

Get the joint design right when resealing: the right width, backing rod and a sealant with enough movement capability. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Facade sealing in Cranbrook

Sealant around windows, doors and cladding panels stops rain reaching the wall behind. Once a perimeter seal fails, water tracks in around frames and panels. We cut out failed facade joints and reseal them with a facade-grade sealant suited to the movement. Most enquiries involve draughts around frames and panels and unsightly perimeter sealant on a visible elevation, across perimeter joints where frames meet the structure, shopfront frames and window and door perimeters. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Cranbrook is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

For a contractor on a smaller site near Cranbrook, one mastic visit at the right stage saves return trips. Let us know the key stages and we’ll time the work so nothing waits on us.

The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Location
Cranbrook (TN17, TN18)
Wider area
Kent
Cover
12 months on every job
Quote
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Leave it or put it right?

Resealing a few window perimeters is a small job; repairing water-damaged interiors and fixings is not. Leaks travel along the structure, often turning up far from the joint. Small buildings around Cranbrook suffer from failed joints as much as large ones. Catching it early means a reseal rather than repairs.

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we will explain how it’s made up.

Why clients in Cranbrook choose us

  • Colour agreed before work starts
  • Fixed quotes based on photos, drawings or a visit
  • Constructionline member for supplier checks
  • Failed material removed, not covered up

Take a look at what affects the cost or our accreditations and insurance.

Site staff or a sealant specialist?

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

What we can’t put right

A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is any of the following:

  • Damaged frames that need replacing
  • Arranging specialist high-level access, which is planned with the client
  • Movement beyond what any sealant can handle

Not sure which it is? You can call the office on 01277 525 020 or email drawings and photos and we’ll tell you honestly before you book.

Joints and surfaces we work on

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

Quoting for work in Cranbrook

A fixed quote reflects the actual work. It takes account of:

  • The size and state of each joint
  • How much there is to seal
  • How much existing material needs removing
  • The site’s rules and procedures

The specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.

Sending details for a quote

A good diagnosis starts with the right details. Tell us:

  • The product your specification calls for
  • Access details, including height
  • What the building is and how it’s used
  • Where the site is, with the postcode

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, call 01277 525 020 or send photos by email.

Questions about Cranbrook

Is Hartley Dyke Business Centre, near Cranbrook, within your area?

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

Can you take on a job at a hospital such as Benenden Hospital?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

How much does the work cost?

It depends on the job: quantities, access, the product and any phasing. Call for a quote.

Which sealant will you use?

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.

Will you quote for a small job?

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.

Will you check whether the sealant is causing the leak?

Yes. We check the sealant joints and report what we find as part of pricing. If the water seems to come from a roof, sill or the glazing unit instead, we say so.

Can weather delay the job?

It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Our process

Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. If neighbouring businesses or buildings around Cranbrook need work too, visits can be combined. Mention the building’s opening times and we’ll work within them.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. Failed beads are removed in full and the joint faces cleaned.
  4. Primer goes on where the product data asks for it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. We go over the completed work with you before leaving.

Getting the site ready

  • Let building users know which areas are affected
  • Arrange parking or a loading space
  • Move anything stored against the joints

Quotes

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to phone 01277 525 020 or email us with what you know.

Get a price

Related advice

Facades, frames and programmes in Cranbrook

Central London is about 39 miles from Cranbrook. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, so mastic packages have to keep pace with busy programmes. A 2-mile radius around Cranbrook takes in several hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.

New wings at hospitals like Benenden Hospital, 3.6 miles to the east of Cranbrook, bring long runs of window and panel joints to seal. Projects at schools like Cranbrook School work to term dates, so mastic is programmed tightly. Hotels like The George Hotel, less than half a mile to the north of Cranbrook, rarely close for long, so refurbishment mastic is phased floor by floor.

Cranbrook is about 12 miles south of Maidstone, in Kent. Anywhere in TN17, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Across Kent, 931 places are covered, including Cranbrook. There’s a separate page for Brighton, roughly 34 miles from Cranbrook.

If you need facade sealing in TN17 and TN18, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are High Street, Crane Lane and White Lion Yard. We also cover Baker's Cross (1 mile east), Coursehorn (1 mile east), Swattenden (1 mile south), Hartley (1 mile south-west) and Gill's Green (3 miles south-west). Bigger towns within reach include Maidstone (12 miles north), Ashford (15 miles east), Royal Tunbridge Wells (12 miles west), Tonbridge (13 miles north-west), Kings Hill (13 miles north-west) and Foley Park (13 miles north).

Landmarks near Cranbrook

In Cranbrook, that means premises near The Crown Public House, Crane Valley and Cranbrook Church of England Primary School and the streets around them. Other landmarks nearby include Sissinghurst Castle (2.5 miles north-east) and Benenden Hospital (3.6 miles east).

Map of Cranbrook © OpenStreetMap contributors
Accreditations

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