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

Mastic sealing for building owners and managing agents in Maidstone, Kent

Mastic sealing in Maidstone, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.

  • Complaints coming in block by block
  • Estate-wide sealant that is simply worn out
  • Draughts at frames across a block
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Mastic sealing for Maidstone sites

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

How we handle mastic sealing in Maidstone

For over 20 years we have resealed joints for owners, agents and landlords. Our applicators are CSCS-carded and we hold public liability insurance. Resealed mastic joints in Maidstone carry our 12-month guarantee. Most enquiries involve estate-wide sealant that is simply worn out and leaks at window and door perimeters, across shopfronts below residential blocks, communal kitchens and washrooms and balcony and threshold joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Maidstone, that means joint design, primers and backing rod as standard.

A large place such as Maidstone usually has blocks of flats, housing association estates and commercial buildings with mixed ownership. Planned maintenance programmes can deal with failed mastic across a building or estate at once.

Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Location
Maidstone (ME15, ME16, ME14, ME17)
Wider area
Kent
Guarantee
12 months on our workmanship
Quotes
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

Diagnose, treat, sign off

When we get to site, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before any cutting starts, and the work usually takes a few days for most blocks, with larger programmes scheduled building by building. In a large town like Maidstone, work on busy buildings is planned area by area, so the building keeps working. Send drawings or photographs and we’ll set out a phasing plan with the quote.

  1. A building-by-building inspection lists the failed joints.
  2. You get a fixed quote, per block or for the whole programme.
  3. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. Joints are resealed and tooled.
  6. We check the finished work and confirm the guarantee.

Preparing the site

  • Let building users know which areas are affected
  • Move anything stored against the joints
  • For older buildings, check the asbestos register before work

Get a fixed quote

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. The easiest way is to call the office on 01277 525 020 or send details through our quote form.

Ask for a quote

Read more

Your questions answered

Do you work in occupied care homes around Maidstone?

Yes. We agree rooms and times with the manager and work a few areas at a time. We follow the home’s own procedures throughout.

Can you quote for a block close to Maidstone West station?

Yes. Blocks of any size are within what we do. Send the address, photos of the elevations and your access arrangements, and we will give a fixed quote.

Is mastic sealing guaranteed?

Our workmanship carries a 12-month guarantee, backed by public liability insurance.

Do you check for asbestos in old sealant?

Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it and suspect material is tested first.

How long does a job like this take?

We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.

When can the area be used after sealing?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.

Will you just go over the old sealant?

No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.

Looking after the joints

A few simple habits keep the new joints working:

  • Share your contractor requirements early
  • Log resealing dates block by block
  • Have the asbestos survey to hand for older buildings
  • Avoid piecemeal callouts where you can

Ask residents or tenants to report draughts or leaks round windows early. A quick report keeps a small repair small.

Failed mastic often goes unnoticed until heavy rain finds it. Resealing when cracking first shows avoids water damage and the complaints that come with it.

Different surfaces, different methods

Commercial and mixed-use buildings

Where retail and residential share a building the programme has to suit everyone. Tell us your site hours and access windows and we will plan around them.

External movement joints

Joint size and product are matched to the expected movement with the width-to-depth ratio set as the manufacturer advises.

What affects the price in Maidstone

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

  • The product specified
  • Working within restricted access windows
  • The site’s rules and procedures
  • How much there is to seal

Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

What to include in your enquiry

A good diagnosis starts with the right details. Let us know:

  • Whether an asbestos survey exists
  • The site address and postcode
  • Whether the building will be occupied during the work
  • Any specification or named product

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, call the office on 01277 525 020 or email a schedule or drawings.

Leave it or put it right?

Replacing mastic before water gets in is a planned job. After water has got in, there may be damp, damaged plaster or decoration to put right too and occupiers notice. Water getting in through a failed joint can damage finishes, stock and fittings, and putting that right typically costs more than the reseal. It pays to act early.

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

Why us?

  • Colours chosen to suit frames, cladding or finishes where possible
  • CHAS accredited contractor
  • Joints cleaned back to sound surfaces
  • Fully insured

See what affects the cost and our accreditations.

Work for main contractors and building owners

Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

Building owners and managing agents use us on everything from one building to a spread of sites around Maidstone. One quote can cover more than one site, so there’s one set of paperwork to deal with.

Looking after buildings in and around Maidstone

Central London is about 31 miles from Maidstone. Within reach of London, blocks run by agents and associations are common around stations. Maidstone is in the South East, one of the UK’s drier regions. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first.

Churches, halls and community buildings such as St Philip's Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. For owners of several units at places like Tovil Green Business Park, 0.9 miles south-west of Maidstone, one programme can deal with frame and external mastic across the lot. Buildings close to stations like Maidstone West station, 0.6 miles to the north-west of Maidstone, are often flats over shops, with frame mastic to keep sound.

Maidstone is about 31 miles south-east of London, in Kent. If you’re looking for mastic sealing in Maidstone, we can help. 931 places across Kent fall within our area, Maidstone among them. There’s a separate page for London, roughly 31 miles from Maidstone.

Commercial sites across ME15, ME16, ME14 and ME17 are covered. Among the streets we cover are Square Hill Road, Arundel Square and Square Hill, and sites on any of them can send details for a fixed quote. You’ll find Maidstone on or near the A20 and A26, so getting applicators and materials to site is simple. Sites close to Maidstone are covered too, including Tovil (1 mile west), Foley Park (1 mile north), Shepway (1 mile south-east), Penenden Heath (1 mile north) and Weavering (1 mile east). Further afield, our area takes in Sittingbourne (10 miles north-east), Sevenoaks (15 miles west), Royal Tunbridge Wells (14 miles south-west), Gravesend (13 miles north-west), Tonbridge (12 miles south-west) and Northfleet (14 miles north-west). Among the larger centres in Kent is Maidstone, and we take on mastic joints for its commercial and public buildings.

Near you in Maidstone

Around Maidstone, our work takes us to commercial buildings near St Augustine Academy, River Len LNR and Maidstone Grammar School, among other places. For rail, the closest station is Maidstone West station, roughly 0.6 miles north-west. Nearby you’ll also find Maidstone Carriage Museum (under half a mile north-west) and Oakwood Hospital (1.8 miles west). The countryside around Maidstone includes Burham Down and Boxley Hills.

Map of Maidstone © OpenStreetMap contributors
Accreditations

Trusted. Accredited. Insured.