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

Facade Sealing in West Hendon

Facade joint and window perimeter sealing on commercial buildings throughout West Hendon and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Cladding panel joints that have opened up
  • Perimeter joints where frames meet the structure
  • Patch repairs that keep failing
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Facade sealing for businesses in West Hendon

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

From enquiry to sign-off

We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, we take the joints in the sequence agreed with you, and each area is checked before we leave it. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. Failed beads are removed in full and both faces cleaned back.
  4. Primer is applied where the maker specifies it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. The finished joints are checked with you.

What we need from you

  • Tell us what induction or permit system the site runs
  • For older buildings, check the asbestos register before work
  • Agree which areas must stay open

Request a quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, give us a call on 01277 525 020 or use the quote form.

Get a price

Related advice

Facade sealing in West Hendon

Our facade sealing work covers external facade joints, window and door perimeters, cladding panel joints and the perimeter joints where frames meet the structure. Where sealant is the specified fix, we also take on coping and flashing joints. Most enquiries involve weathered facade joints that have lost their grip and damp patches beside frames after rain, on cladding panel joints, coping and flashing joints and stone and brick facade joints. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in West Hendon it comes down to the same thing: the right product in a properly prepared joint.

Around West Hendon, as across London, much of the work is refurbishing existing buildings as well as building new ones. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building.

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

Where
West Hendon (NW9, NW4)
Region
Greater London
Guarantee
12 months on every job
Quote
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Signs you need facade sealing in West Hendon

Sometimes the substrate is the problem: crumbling render, spalling concrete or flaking paint take the sealant with them. When the joint edges need repair first, we say so.

Things that usually lead to an enquiry:

  • Old perimeter mastic that has dried out
  • Damp patches beside frames after rain
  • Staining on stone next to old sealant
  • Cladding panel joints that have opened up

For a contractor at a hotel such as The Pillar Hotel, 1.3 miles to the east of West Hendon, the mastic often has to be finished before a reopening date.

Before you book anyone

  • Their public liability cover
  • How long is the guarantee, and what does it include?
  • How the joint faces will be prepared and primed
  • Can the work be phased to keep areas open?

Choosing a commercial sealant contractor

Questions about West Hendon

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

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. All of Greater London is inside the ULEZ, and our planning allows for it

Can you work on a hospital site such as BMI Hendon Hospital?

Yes. We work in healthcare settings as well as offices and schools. Each area is agreed with the ward or department and the estates team in advance.

Do you seal facades in winter?

Wet joints or temperatures outside the product’s range mean waiting. We plan for weather and keep you updated.

Does the weather affect the work?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.

Is colour matching possible?

It depends on the product specified. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.

Do you replace windows or glass?

No. A glazing contractor handles that. What we seal are the joints around frames and panels across the facade.

Do you guarantee your work?

Yes. Workmanship is guaranteed for 12 months.

When to bring in a specialist

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

Different surfaces, different methods

Brick and stone facades

Stone can absorb plasticisers from the wrong sealant. The specified stone-compatible sealant is what we use, and mask the edges carefully.

Coping and flashing joints

Coping and flashing joints are included where sealant is the specified fix. These joints take full exposure to weather.

Mastic packages on West Hendon sites

Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in West Hendon. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for. A good number of hotels sit less than 2 miles from West Hendon. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.

Hospital estates such as BMI Hendon Hospital (to the north-east of West Hendon) tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan. 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. West Hendon sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 764 places in Greater London, large and small. Sites around London have their own page, about 9 miles away.

If you need facade sealing in NW9 and NW4, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. If your site is on Alpini Road, Catkin Road and Garrick Road or close by, we can quote for facade joints. Main routes into West Hendon include the A5, which helps when planning parking and deliveries for the job. If your building is just outside West Hendon, we cover 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). Nearby towns on our patch include 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).

What’s near West Hendon

Locally, jobs take us to sites close to Woodfield School, Moon Under Water pub and Brampton College and the streets around them. West Hendon has its own railway station: Hendon station. Nearby you’ll also find Brent Cross Shopping Centre (1.1 miles east) and Church Farmhouse Museum (1 mile north-east). Green spaces nearby include Masons Field and Parliament Hill.

Map of West Hendon © OpenStreetMap contributors

Maintenance after handover

Regular inspection catches problems early. Specifically:

  • Ask about asbestos in pre-2000 mastic
  • Report water ingress at frames as soon as it shows
  • Inspect facade joints on a regular cycle
  • Clear debris that holds water against joints

Record the sealant type and date on the building file. It helps when matching repairs or planning the next reseal across the elevation.

Coordinate facade sealing with other external works. Sharing the access keeps the cost down and limits disruption.

Quoting for work in West Hendon

Sealant work doesn’t have a standard rate, since sites vary so much. What we take into account:

  • Removal of failed or old sealant
  • Location, for remote and island sites
  • The total length or number of joints
  • The product specified

Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

Sending details for a quote

Diagnosis starts before we arrive. Tell us:

  • Rough lengths or quantities, or drawings if you have them
  • The site address and postcode
  • Specification clauses that apply
  • Any dates the work must fit around

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to call the office on 01277 525 020 or email the details over with what you know.

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