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

Mastic contractors in West Hendon

Mastic packages for new-build and refurbishment projects in West Hendon and across Greater London. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Perimeter gaps outside the sealant’s range
  • Old sealant on a refurbishment that needs stripping before new work
  • Different trades sealing to different standards
1
Send details
Tell us about the site, with photos if you have them.
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
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Construction mastic across West Hendon

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Construction mastic in West Hendon

A typical mastic package covers more than window perimeters: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. Splitting those between trades often leaves gaps in responsibility, and one applicator team gives a consistent finish. If you are dealing with early adhesion failures on new external joints and old sealant on a refurbishment that needs stripping before new work, we can help, whatever the surface. For commercial sealant work in West Hendon, you deal with one contact from quote to sign-off, whether it’s one building or several.

Around West Hendon, as across London, much of the work is refurbishing existing buildings as well as building new ones. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
West Hendon (NW9, NW4)
Wider area
Greater London
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

Do you need construction mastic in West Hendon?

On a live site, contamination is the biggest threat to a new joint. Plaster dust, release agents, protective film residue and damp all stop sealant bonding so faces get cleaned, and primer goes on wherever the maker specifies, even on new work.

Common reasons buildings call us in:

  • Existing joints on a refurb that need cutting out and resealing
  • Window and door perimeters that won’t pass inspection
  • Cracks opening in caulked internal joints
  • Early adhesion failures on new external joints

When units on a site such as Silk Bridge Retail Park, under half a mile to the south-east of West Hendon, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.

Questions to ask before you book

  • The named product and why it was chosen
  • Whether old or failed sealant will be cut out, not overlaid
  • How they handle RAMS and site documents
  • How joint depth will be controlled

Our contractor checklist

New build and refits around West Hendon

As part of Greater London, West Hendon is inside the ULEZ, which applies to every van on site. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. A good number of hotels sit less than 2 miles from West Hendon. When hotels extend or refit, the work is usually squeezed between peak periods, mastic included.

For a contractor working at a hospital such as BMI Hendon Hospital, 1.3 miles to the north-east of West Hendon, perimeter and facade sealing is planned around patients and deliveries. Further education sites such as College of North West London (2.1 miles south of West Hendon) are extended and refurbished from time to time, with mastic often programmed into the summer break.

West Hendon is about 2 miles north of Neasden, in Greater London. Looking for construction mastic in West Hendon? We can help, as we do across Greater London. 764 places across Greater London fall within our area, including West Hendon. Sites around London have their own page, about 9 miles away.

Anyone looking for construction mastic in NW9 and NW4 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. We cover commercial and managed buildings on Alpini Road, Catkin Road and Garrick Road. West Hendon sits on or close to the A5, useful when we plan access and materials. Just outside West Hendon, we also work in The Hyde (1 mile south), Colindale (1 mile north), The Burroughs (1 mile north-east), Hendon (1 mile east) and Staples Corner (1 mile south-east). A short drive away, we cover London (9 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (7 miles south-east) and Shoreditch (8 miles south-east).

Landmarks near West Hendon

Recent enquiries here include premises near Woodfield School, Moon Under Water pub and Brampton College, among other places. West Hendon has its own railway station: Hendon station. Nearby you will also find Brent Cross Shopping Centre (1.1 miles east) and Church Farmhouse Museum (1 mile north-east). For a walk, there’s Masons Field and Parliament Hill.

Map of West Hendon © OpenStreetMap contributors

How a job runs

Inspect, seal, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. Planning a London job such as one in West Hendon starts with access. Send the building rules and access times with your enquiry.

  1. We start with the drawings, specification and programme.
  2. We take off quantities and return a fixed quote.
  3. We agree with the site team which areas come first.
  4. Plots or floors are sealed as they’re handed over.
  5. Joints are prepared, backed and sealed to the specification.
  6. Snags are cleared and the package signed off with our 12-month guarantee.

What we need from you

  • Agree which areas must stay open
  • Warn occupants and staff about the work
  • Send your site hours and access windows

Quotes

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, give us a call on 01277 525 020 or use the quote form.

Get a price

Read more

Questions about West Hendon

Is hospital work, at somewhere like BMI Hendon Hospital, something you do?

Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.

Can you work in a London building with booked loading and goods-lift slots?

Yes, most London buildings have access rules of some kind, and we plan around them. The building manager’s rules go straight into our method. All of Greater London is inside the ULEZ, and our planning allows for it

Can you work while the building is occupied?

In most cases, yes. Phased work can be planned so areas stay in use.

How many days will you need on site?

The duration is planned around your programme and the access we are given. We will give you an estimate of time on site when we quote.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.

Do you cover West Hendon?

Yes. We cover West Hendon, and the simplest way to start is to call the office on 01277 525 020 or send photos by email.

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 and updated as the programme moves.

General trades versus a specialist

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

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.

Why deal with it now?

Leaving mastic to whichever trade is fitting the element can look cheaper on paper. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple, with the same standard on every plot. Repeat call-outs disrupt occupied London buildings, so a proper job first time, with the old sealant fully removed, is worth it.

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.

Why appoint us

  • Colour agreed before work starts
  • CSCS-carded applicators
  • One contact handling all your sites
  • Products installed to the manufacturer’s instructions

Take a look at what affects the cost and our accreditations and insurance.

When it isn’t the sealant

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Specifying the product where the designer hasn’t
  • Rework caused by others damaging completed areas
  • Frame gaps too wide for sealant, which the installer needs to correct

If you are not sure, just call 01277 525 020 or email drawings and photos and we will give you a straight answer.

Where we work in West Hendon

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

Building owners, agents and FMs in West Hendon

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

We work for building owners and managing agents on sealant work across single buildings or whole portfolios around West Hendon. One quote can cover more than one site, which keeps the paperwork simple.

Accreditations

Trusted. Accredited. Insured.