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

Mastic Sealing in The Common

We carry out mastic sealing for building owners, managing agents and housing associations in The Common. Send details for a fixed quote.

  • Communal area joints that look neglected
  • Brittle perimeter mastic across a building
  • A mix of products and colours from past repairs
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS accredited
£5m public liability

Mastic sealing near The Common

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

Mastic sealing in The Common

There isn’t one mastic for every joint on a building. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint, and colours are confirmed for whichever product is used. We work on balcony and threshold joints, communal entrances and stairwells and communal kitchens and washrooms, and the usual reasons a site gets in touch are old repairs sealed over failed mastic and occupiers reporting cold air round windows. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in The Common is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Rural conversions near places like The Common often set modern frames into older stone, flint or brick. Perimeter mastic there has to grip an uneven face and suit the building’s character.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
The Common (CB10)
Region
Essex
Guarantee
12 months on every job
Quote
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026

How the job changes by surface

Window and door perimeters on blocks

Perimeter joints on blocks are best done elevation by elevation or block by block. How each joint is reached is agreed at quote stage.

Communal areas

Communal areas stay in use while we work. Work is planned in sections.

Maintenance after handover

Once the work is signed off, these steps help:

  • Make mastic part of routine maintenance checks
  • Start inspections with the most exposed faces
  • Reduce knocks to communal area joints
  • Encourage occupiers to report problems at frames

Where a paintable product was specified, it can be painted after curing. Silicone usually can’t be painted, so keep decorators off it.

Failed mastic often goes unnoticed until heavy rain finds it. Resealing when cracking first shows avoids water damage and saves internal repairs.

For managing agents and facilities managers

Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

Building owners and managing agents use us on everything from one building to a spread of sites. Several sites can go on one quote, which keeps the paperwork simple.

Why act early in The Common

A bead run over old mastic can look like a repair. It won’t grip the old sealant and soon comes away. Full removal and proper preparation is what lasts. Around The Common, it’s better to renew all the failing joints at once, rather than one at a time. Photos of every joint help us quote for the whole job.

Pricing mastic joints depends on how many there are, their condition and the access. Call for a quote.

Why choose Mastic Doctor in The Common

  • Matching to RAL references, product permitting
  • Old sealant cut out, never sealed over
  • Over 20 years of commercial sealing
  • CHAS accredited

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

What sealant work can’t fix

We check first that sealant really is the fix. It won’t put right:

  • Glazing that needs replacing
  • Water coming in from the roof or rainwater goods
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first

If in doubt, call 01277 525 020 or send details through our quote form and we will say what we think.

Where we work in The Common

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

From enquiry to sign-off

On arrival, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, with the work itself normally taking one or more days per building, depending on the joint lengths and the access. Jobs in and around smaller places like The Common are usually planned as a single visit, so photographs and measurements up front really help. That way the right products come on the day.

  1. We inspect each building and record the joints that have failed.
  2. You get a fixed quote, per block or for the whole programme.
  3. Dates and areas are agreed so occupiers can be told.
  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.

What we need from you

  • Point out any areas we must not close
  • Let us know about inductions and permits
  • Explain the parking and delivery arrangements

Request a quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we will arrange a site visit if anything is unclear.

Get a quick quote

Advice

Common questions from The Common clients

Is The Common too far out for you?

Not at all. The Common is within our area. We cover Greater London and the counties of the South East. Where we can, we group nearby jobs to make the most of each trip.

Which documents can you supply for work in The Common?

RAMS, insurance certificate, CSCS details: list what the site needs and we’ll confirm it with the quote. Our applicators are CSCS-carded, and we carry £5m public liability insurance.

Is asbestos a concern with old mastic?

Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it, and if it’s suspected, work stops until it’s tested.

How much does the work cost?

Every job gets its own fixed quote. For yours, give us a call on 01277 525 020 or email the details over.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

Can you reseal a whole block or estate?

We can. Each building is inspected, quoted and scheduled in turn starting wherever is most urgent.

Can people stay in the building while you reseal?

Occupiers stay in the building throughout. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.

Blocks and managed buildings in The Common

The Common is in the South East, one of the UK’s drier regions. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first. The Common lies roughly 41 miles out from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres.

Schools and community buildings such as Radwinter Church of England Voluntary Aided Primary School need frame and external mastic kept sound like any building. Churches, halls and community buildings such as Church of St Mary the Virgin are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

The Common is about 4 miles east of Saffron Walden, in Essex. Anywhere in CB10, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 644 places in Essex. Our London page has more on work in that area (41 miles or so).

We take on mastic joints across the CB10 postcode area, for business premises of every kind. We also cover Radwinter (1 mile south), Maple End (1 mile south-west), Wimbish (2 miles south-west), Hempstead (2 miles east) and Church End (3 miles north-west) for mastic joints. A short drive away, we cover Braintree (13 miles south-east), Saffron Walden (4 miles west), Halstead (14 miles south-east), Great Dunmow (10 miles south), Stansted Mountfitchet (10 miles south-west) and Great Notley (14 miles south-east).

What’s near The Common

A little further out are Castle Camps (2.8 miles north-east) and Saffron Walden Community Hospital (3.5 miles west). For a walk, there’s Hales and Shadwell Woods.

Map of The Common © OpenStreetMap contributors
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