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

Construction Mastic in Old Oak Common

Construction mastic for Old Oak Common, from a contractor working since 2005. Fully insured, with a 12-month guarantee.

  • Old sealant on a refurbishment that needs stripping before new work
  • Frame gaps too wide for sealant alone
  • Internal caulk splitting as the building dries out
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Construction mastic across Old Oak Common

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

Work for main contractors and building owners

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.

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

Construction mastic in Old Oak Common, done properly

Mastic tends to be one of the final packages before handover. We work as a mastic subcontractor to main contractors and developers with projects in Old Oak Common, following the trades through the building as rooms and elevations become ready. We work on cladding and panel joints, brick and block movement joints and sanitary and kitchen joints, and the failures we’re asked to look at most are snag items on joints that need redoing before handover and missed perimeter joints on a new elevation. A single leaking joint is often how a building in Old Oak Common first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Building sites in London tend to be tight: limited storage, booked deliveries and access shared with other trades. We fit around the programme, sealing each elevation or floor as other trades hand over.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.

Place
Old Oak Common (NW10, W3, NW26)
Wider area
Greater London
Cover
A 12-month guarantee
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Sites and facades in and around Old Oak Common

There are a good number of hotels within about 2 miles of Old Oak Common. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included. As part of Greater London, Old Oak Common is inside the ULEZ, which applies to every van on site. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for.

University estates such as Imperial College London (to the south-east of Old Oak Common) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. When units on a site such as Apex Industrial Estate (less than half a mile north-east of Old Oak Common) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. Work at a hotel such as Diana Hotel (0.5 miles north-east of Old Oak Common) tends to be programmed around bookings, mastic included.

Old Oak Common is about 1 mile south of Harlesden, in Greater London. Businesses, contractors and managing agents in Old Oak Common use us for work on mastic packages, as part of our coverage of Greater London. Old Oak Common is one of 764 places we cover in Greater London. Our London page has more on work in that area.

If you need construction mastic in NW10, W3 and NW26, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Among the streets we cover are Atlas Road, Tubbs Road and Waldo Road. Close to Old Oak Common, our area also takes in College Park (1 mile north-east), Harlesden (1 mile north), Kensal Green (1 mile east), Park Royal (1 mile west) and North Kensington (1 mile east). Further afield, our area takes in London (7 miles east), City of Westminster (4 miles east), Marylebone (4 miles east), Kensington (3 miles south-east), St Pancras (6 miles east) and Shoreditch (7 miles east).

Around Old Oak Common

We work on buildings around Green Man Public House, Library for Iranian Studies and Star Chamber Academy. You’ll also find Little Wormwood Scrubs (0.8 miles east) and St Claudine's Catholic School for Girls (0.8 miles north). Old Oak Common has its own railway station: Willesden Junction station. Nearby you’ll also find Westfield London (1.7 miles south-east) and Hammersmith Hospital (0.8 miles south-east). Open spaces near Old Oak Common include Hanger Hill Wood and Campden Hill.

Map of Old Oak Common © OpenStreetMap contributors

On site: what to expect

Tell us your site hours and access windows and we’ll plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Most London premises stay occupied while we are on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  1. First we look at the scope on site or from drawings.
  2. A fixed quote sets out scope, products and phasing.
  3. Site paperwork is confirmed and our CSCS-carded applicators are inducted.
  4. Sealing follows the programme as areas are released.
  5. Any frame gaps or issues outside our scope are flagged to the site team.
  6. Final snagging is completed and the 12-month guarantee applies.

Preparing the site

  • Let building users know which areas are affected
  • Tell us what induction or permit system the site runs
  • Make sure the joints can be reached

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 ring 01277 525 020 or email drawings and photos.

Ask for a quote

Read more

When it isn’t the sealant

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
  • Rework caused by others damaging completed areas
  • Glazing units that are cracked or misted

If in doubt, speak to us on 01277 525 020 or send photos by email and we’ll say what we think before you book.

Joints and surfaces we work on

  • Floor and skirting junctions
  • Sanitary and kitchen joints
  • Cladding and panel joints
  • Internal decorators’ caulk
  • Window and door perimeters
  • Brick and block movement joints

Your questions answered

Would you work within a site like Hammersmith Hospital?

Yes, healthcare and care buildings are part of our work. Work is phased so departments keep running, under the site’s own rules.

Can you cope with the access rules in a London building?

Yes, we plan every London job around the building’s own access rules. Share the building’s contractor rules and we’ll work to them. The ULEZ covers the whole of Greater London, which we allow for

Can you fit around our working hours?

We are in the office from 8am until 5pm, Monday to Friday. Tell us your site hours and access windows and the work will be fitted around them.

Can you work plot by plot or floor by floor?

We seal plot by plot or floor by floor as areas are released. The sequence is settled with your site team.

Is any job too small?

Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.

Do you do fire-rated sealing on new builds?

Where it’s specified, yes. We will flag if the detail needs a different product.

Can one quote cover more than one building?

Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.

Site staff or a sealant specialist?

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.

Surface by surface

Snagging before handover

Snags typically come from damage by following trades, missed joints or poor earlier work. We price snagging as part of the package or as a separate visit.

Bathrooms, en suites and washrooms

In bathrooms and washrooms, an anti-mould sanitary silicone goes around every fitting. Joints are cleaned, sealed and tooled neatly.

Maintenance after handover

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

  • Keep scrapers and abrasive pads off new beads
  • Ask for joint and product checks before the package is urgent
  • Protect sealed areas from following trades
  • Allow flexibility for external sealing in damp or cold weather

Tell the builders’ clean team which areas have new sealant. Scrapers used on frames and worktops can nick or lift a new bead.

External joints sealed in poor weather are a common cause of early failure. Holding off until conditions suit avoids callbacks.

Accreditations

Trusted. Accredited. Insured.