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

Mastic Sealing in Hearnden Green

We carry out mastic sealing for building owners, managing agents and housing associations in Hearnden Green and the surrounding area. Send details for a fixed quote.

  • Complaints coming in block by block
  • Estate-wide sealant that is simply worn out
  • Communal area joints that look neglected
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
£5m PL insurance

Mastic sealing for businesses in Hearnden Green

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

Questions we are asked in Hearnden Green

Is Hearnden Green off your patch?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

Can you quote for a block close to Headcorn station?

Yes. Blocks of any size are within what we do. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.

Is asbestos a concern with old mastic?

Asbestos removal isn’t part of our work. If old sealant is suspected, work stops until it’s tested in line with the dutyholder’s asbestos management.

How soon can the area be used again?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.

Can you seal joints high up on a block?

Every block is different. How upper joints are reached is agreed before work is booked so there are no surprises.

How do you choose the sealant?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

Do you supply RAMS and insurance details?

Our credentials include CHAS, Constructionline and public liability insurance. For specific documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

Mastic sealing in Hearnden Green, done properly

Managing agents and housing associations normally need paperwork before anyone starts. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. We work on window and door perimeters on blocks, shopfronts below residential blocks and external wall and movement joints, and the usual reasons a site gets in touch are no planned programme for sealant and open joints in brickwork or panels. Facilities teams, main contractors and managing agents in Hearnden Green tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Rural conversions near places like Hearnden Green often set modern frames into older stone, flint or brick. The mastic needs to suit an irregular masonry face and the look of the building.

Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.

Where
Hearnden Green (TN27)
Wider area
Kent
Cover
12 months on every job
Quote
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

How the job changes by surface

Estate-wide resealing programmes

Housing associations and agents often manage many similar blocks. We quote building by building and work through them in turn.

Planned maintenance

Mastic wears out like any building component; how fast comes down to movement, weather, UV and the product. Regular inspection is the best way to plan resealing.

When to call us in Hearnden Green

Communal entrances and corridors see a lot of wear, with joints near the floor and around doors suffering most. Cleaning products add to the wear.

Things that typically lead to an enquiry:

  • Failed external movement joints
  • Communal area joints that look neglected
  • A mix of products and colours from past repairs
  • Repeated reactive repairs to the same buildings

With historic buildings such as Leeds Castle (to the north of Hearnden Green) in the wider area, owners of older properties around Hearnden Green should expect mastic to need a product that suits old masonry.

What to look for in a quote

  • How the existing material will be dealt with
  • What level of public liability insurance do they hold?
  • How they’ll work around occupants
  • What site paperwork they can supply

Our contractor checklist

When it isn’t the sealant

Some faults sit outside our scope, and we say so rather than covering them up:

  • Leaks from above rather than through a joint
  • Materials that need asbestos testing before work
  • Broken glass or failed sealed units

If you’re not sure, just give us a call on 01277 525 020 or email us and we will give you a straight answer before you book.

Surfaces we seal

  • Balcony and threshold joints
  • Window and door perimeters on blocks
  • Communal entrances and stairwells
  • Communal kitchens and washrooms
  • Shopfronts below residential blocks
  • External wall and movement joints

Leave it or put it right?

Looking at mastic during planned maintenance costs little. Waiting until leaks appear means working under pressure with less control over timing. Converted and older buildings near places like Hearnden Green tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

Why us?

  • Over 20 years of commercial sealing
  • Colours confirmed for the specified product
  • Public liability insurance in place
  • Specification-led, product-correct work

Take a look at our cost guide or our accreditations and insurance.

Frames, entrances and external joints in Hearnden Green

Hearnden Green lies roughly 37 miles out from central London. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres, and window and balcony mastic on them tends to age at the same rate. Rainfall across the South East, Hearnden Green included, is lower than in many parts of the UK. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.

If you own or manage units on a site such as Barradale Farm Industrial Estate (0.7 miles south of Hearnden Green), failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. If you look after a block within reach of Headcorn station (1.8 miles south of Hearnden Green), frame and balcony mastic can be renewed on one programme.

Hearnden Green is about 6 miles south-east of Maidstone, in Kent. Businesses, contractors and managing agents in Hearnden Green can call on us for mastic joints. Our Kent coverage takes in 931 places. London is covered too, around 37 miles from Hearnden Green.

If you need mastic sealing in TN27, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your building is just outside Hearnden Green, we cover Headcorn (1 mile south-east), Southernden (2 miles east), Swift's Green (3 miles south-east), Smarden Bell (3 miles south-east) and Lashenden (4 miles south). Bigger towns within reach include Maidstone (6 miles north-west), Ashford (12 miles east), Sittingbourne (12 miles north-east), Royal Tunbridge Wells (15 miles west), Tonbridge (15 miles west) and Faversham (15 miles north-east).

Local landmarks in Hearnden Green

The nearest railway station is Headcorn station, roughly 1.8 miles south of the centre. A little further out are Sutton Valence Castle (1.7 miles north-west) and Kent Firefighting Museum (3.6 miles south).

Map of Hearnden Green © OpenStreetMap contributors

Diagnose, treat, sign off

At the end of each section, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. For a building around Hearnden Green, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.

  1. We check the asbestos register for older buildings and look at the joints.
  2. A fixed quote covers the joints, products and order of work.
  3. Failed mastic is removed completely.
  4. The joints are prepared and resealed with the right product.
  5. Buildings are completed in turn.

What we need from you

  • Point out parking and an unloading spot
  • Warn occupants and staff about the work
  • Tell us your opening times and when work is allowed

Get a fixed quote

The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or ring 01277 525 020 or send photos by email if you’d rather talk the job through.

Ask for a quote

Related advice

Work for main contractors and building owners

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

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.

Accreditations

Trusted. Accredited. Insured.