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

Mastic sealant contractors in Gants Hill

Mastic sealing for building owners, managing agents and housing associations throughout Gants Hill and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Failed external movement joints
  • The same joint failures repeated across a portfolio
  • Patchy repairs in mismatched sealant
1
Send details
Drawings, photos, a joint schedule or a site visit.
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
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Need mastic sealing in Gants Hill?

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

What we can’t put right

Sealant solves a lot, but not everything, and we’re upfront when that’s the case. It won’t fix:

  • Misted or failed double-glazed units
  • Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first

If you’re not sure, just call 01277 525 020 or send photos by email and we will give you a straight answer.

What we seal

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

About our mastic sealing in Gants Hill

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. Entrances and stairwells are kept in use throughout. Site teams most often ask us about movement joints with sealant missing and damaged joints in communal entrances and corridors, on balcony and threshold joints, communal kitchens and washrooms and shopfronts below residential blocks. For commercial sealant work in Gants Hill, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

London’s ULEZ covers every borough, and parking and loading rules vary street by street. For block-wide work, a place to park and store materials saves time on every visit.

A 12-month guarantee applies to all our work. If an installation problem shows up, call the office on 01277 525 020 or send photos by email and we will arrange a return visit.

Place
Gants Hill (IG2, IG6, IG1)
Region
Greater London
Guarantee
12 months on every job
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Looking after buildings in and around Gants Hill

London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. We plan around the notices and access you arrange. The 2 miles around Gants Hill include four care or nursing homes. Care home owners need frame and external mastic kept sound without unsettling residents.

Student accommodation around universities such as University of East London, 3.8 miles south-west of Gants Hill, is usually managed block by block, which suits a planned mastic programme. For owners of several units at places like Newbury Retail Park, which lies east of Gants Hill, one programme can deal with frame and external mastic across the lot.

Gants Hill is about 3 miles north-east of Forest Gate, in Greater London. Commercial clients in Gants Hill can call on us for mastic joints. Across Greater London, 764 places are covered, including Gants Hill. For work in that direction, see our London page (9 miles or so).

Anyone looking for mastic sealing in IG2, IG6 and IG1 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. If your site is on Bute Road, Perth Road and Shere Road or close by, we can quote for mastic joints. You will find Gants Hill on or near the A123, so getting applicators and materials to site is simple. Nearby places we also cover include Newbury Park (1 mile east), Barkingside (1 mile north-east), Redbridge (1 mile west), Cranbrook (1 mile south-west) and Ilford (1 mile south). A short drive away, we cover London (9 miles south-west), City of Westminster (11 miles south-west), Marylebone (10 miles south-west), Kensington (13 miles south-west), St Pancras (9 miles south-west) and Shoreditch (7 miles south-west).

Landmarks near Gants Hill

Around Gants Hill, our work takes us to commercial buildings near Valentines Park and Valentines High School and the streets around them. The nearest railway station is Ilford station, about 1.2 miles south. Nearby you’ll also find Stratford Centre (3.9 miles south-west) and Goodmayes Hospital (1.7 miles east). For a walk, there’s Hollow Pond and Hainault Lodge.

Map of Gants Hill © OpenStreetMap contributors

Your questions answered

Will you take on a block within reach of Ilford station?

Yes. Blocks of any size are within what we do. Photos of each elevation help us quote accurately.

Does your area include sites such as Newbury Retail Park, near Gants Hill?

Yes. We cover Gants Hill and the area around it, including industrial estates, business parks and retail parks such as Newbury Retail Park. To start, just call 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.

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.

Do you work to architects’ specifications?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.

What if the old mastic contains asbestos?

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.

Will residents or tenants be disturbed?

The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told, and entrances stay in use.

When can the area be used after sealing?

That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.

Our process

Working in a building that stays open takes some planning. The work area is signed and kept contained, keep walkways clear and move on in phases so staff and visitors can carry on around us. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.

  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. Joint faces are cleaned, backed and resealed.
  5. We finish each building before moving to the next.

What we need from you

  • For older buildings, check the asbestos register before work
  • Explain the parking and delivery arrangements
  • Tell staff and tenants when we will be in

Getting a fixed quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, phone 01277 525 020 or email a schedule or drawings.

Ask for a quote

Read more

Surface by surface

External movement joints

The joint width has to suit the movement and the sealant’s capability, often around 2:1 width to depth, as the manufacturer advises.

Planned maintenance

We can work into your cyclical maintenance plan on a timetable you set.

For managing agents and facilities managers

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Gants Hill can form part of a wider programme across Greater London.

Maintenance after handover

Your facilities or cleaning team can help the joints last. Pass these on to them:

  • List the paperwork your organisation requires when you send details
  • Include mastic in your cyclical inspections
  • Keep bins and bikes away from communal door frames
  • Start inspections with the most exposed faces

Keep bins, bikes and deliveries away from low-level joints where you can. Damage at low level is the most common reason communal joints fail early.

Joints on a building age together so a single failure is a sign to check the rest. A planned reseal saves repeated visits.

Common problems we fix in Gants Hill

The edges of the material itself sometimes break away, such as crumbling render, brick arrises or frame edges. If the edges are unsound, we say so before quoting the sealing.

Typical triggers for a call:

  • Draught complaints from residents or tenants
  • Worn sealant at communal door frames
  • Repeated reactive repairs to the same buildings
  • The same joint failures repeated across a portfolio

For a school such as Gearies Primary School, perimeter mastic on windows and doors is a holiday job.

Questions to ask before you book

  • The terms of the workmanship guarantee
  • Whether primer will be used where the manufacturer specifies it
  • How they handle RAMS and site documents
  • Whether old or failed sealant will be cut out, not overlaid

Questions to ask before you appoint anyone

Accreditations

Trusted. Accredited. Insured.