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

Mastic sealing for building owners and managing agents in Romford, Greater London

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

  • Water getting in round frames after rain
  • Cracked, hardened mastic round windows on a block
  • Estate-wide sealant that is simply worn out
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Mastic sealing in Romford

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

Work for main contractors and building owners

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Romford can sit alongside others in a wider programme across Greater London.

Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so the building keeps working while we do.

How we handle mastic sealing in Romford

Blocks are lived in, so access and disruption have to be thought through. The sequence, the areas and the dates are settled with you, giving you what you need to notify residents. Communal entrances and stairs stay usable throughout. We work on communal kitchens and washrooms, external wall and movement joints and shopfronts below residential blocks, and what we’re called in for most is old repairs sealed over failed mastic and leaks at window and door perimeters. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Romford it comes down to the same thing: the right product in a properly prepared joint.

Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. Work is planned with the agent so residents get notice and access is arranged in advance.

Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Romford (RM1, RM7, RM11, RM2)
Region
Greater London
Cover
A 12-month guarantee
Price
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026

Why act early in Romford

Replacing mastic before water gets in is a planned job. Once water has tracked in, the repair list grows, and the complaints come with it. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.

The price depends on the quantity of joints, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.

Why us?

  • A range of standard colours, depending on the product
  • Public liability insurance in place
  • Fixed quotes based on photographs, drawings or a visit
  • Our applicators hold CSCS cards

Take a look at our cost guide and our accreditations.

Our process

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work typically takes one or more days per building, depending on the joint lengths and the access, and we clear our waste as we work. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.

  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. We strip out the old sealant.
  4. The joints are prepared and resealed with the right product.
  5. We finish each building before moving to the next.

Preparing the site

  • Let building users know which areas are affected
  • Send any specification or drawings in advance
  • Point out parking and an unloading spot

Quotes

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.

Ask for a quote

Advice

Planned mastic for Romford portfolios

In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. Our programme follows the access you agree with residents.

Historic properties like Hare Hall, 1.4 miles to the north-east of Romford, show the age of some local stock, where frame mastic must suit soft brick or stone. Schools and community buildings such as Concordia Academy need frame and external mastic kept sound like any building. For agents with blocks near Romford station, under half a mile to the south-east of Romford, a block-wide mastic programme deals with frames, balconies and entrances in one go.

Romford is about 12 miles west of Basildon, in Greater London. We send applicators to Romford for mastic joints. Romford is one of 764 places we cover in Greater London. For work in that direction, see our London page, about 13 miles away.

Commercial sites across RM1, RM7, RM11 and RM2 are covered for mastic joints. If your site is on High Street, Market Place and Market Link or close by, send details and we will quote for mastic joints. You will find Romford on or near the A1251, so getting applicators and materials to site is simple. We also cover Rush Green (1 mile south-west), Collier Row (1 mile north), Rise Park (1 mile north), Becontree Heath (1 mile south-west) and Chadwell Heath (2 miles west) for mastic joints. A short drive away, we cover London (13 miles south-west), City of Westminster (15 miles west), Marylebone (15 miles west), St Pancras (13 miles west), Shoreditch (12 miles west) and Walthamstow (9 miles west).

Local landmarks in Romford

Locally, jobs take us to sites close to Lodge Farm Park, Frances Bardsley Academy for Girls and The Moon & Stars pub. There’s a railway station in Romford itself: Romford station. Other landmarks nearby include The Brewery (less than half a mile south-west) and Oldchurch Hospital (less than half a mile south). Green spaces nearby include The Chase Nature Reserve.

Map of Romford © OpenStreetMap contributors

Surface by surface

Tenement and older buildings

Stone needs a neutral-cure product, so we pick a grade that won’t mark it.

External movement joints

Failed sealant is removed, backing rod inserted to control depth and the joint resealed with a grade whose movement class fits.

What sealant work can’t fix

Being straight saves everyone time. Fresh joints won’t solve:

  • Water coming in from the roof or rainwater goods
  • Failed window or door frames, which need a window contractor
  • Broken glass or failed sealed units

If in doubt, speak to us on 01277 525 020 or email drawings and photos and we will say what we think before you book.

Joints and surfaces we work on

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

How the quote is worked out

What shapes the price:

  • The total length or number of joints
  • Site requirements such as inductions and permits
  • Whether the work must be split into stages
  • Whether old sealant has to be cut out first

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we will put a fixed figure on it.

Sending details for a quote

For an accurate fixed quote, we need a clear picture of the site. Send us:

  • Approximate linear metres or a joint schedule
  • Access details, including height
  • The type of building and who uses it
  • Specification clauses that apply

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

Romford: questions and answers

Do you work in London buildings with loading restrictions?

Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Send the building rules and access times with your enquiry.

Do you cover business parks and estates near Romford, such as Rom Valley Retail Park?

Yes. Estates, retail parks and business parks around Romford, Rom Valley Retail Park among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.

What do you charge?

It depends on the job: quantities, access, the product and any phasing. Call for a fixed quote and we’ll price it properly.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

How do you choose the sealant?

A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

How do we ask for a quote?

There are four steps: send details, get a quote, we seal, guaranteed. The first step only needs photographs and a postcode.

Do you work in Romford?

Yes. Romford is in our area, within our coverage of Greater London, South East England and Scotland. To discuss a job, give us a call on 01277 525 020 or send photos by email.

Accreditations

Trusted. Accredited. Insured.