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

Facade Sealing in Hanger Hill

Facade joint and window perimeter sealing on commercial buildings across Hanger Hill, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Cold air coming in at window perimeters
  • Discoloured or dirty facade joints
  • New sealant peeling off old mastic
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Facade sealing near Hanger Hill

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

Questions about Hanger Hill

Will you plan work around the academic year at somewhere like The University of West London?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Can you work at a site such as Concord Business Centre, by Hanger Hill?

Yes, sites like Concord Business Centre are within our area, along with the rest of Hanger Hill. Send details of the unit and the work through our quote form for a quick quote.

How soon can the area be used again?

We will confirm how long the chosen product needs to cure, and sign any area that should be left alone.

Do you hold CHAS accreditation?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

Do you provide access for facade work?

We agree access with the client at the start. Tell us about access: existing scaffold, what you are arranging and any site restrictions, and the quote will reflect it.

Do you use silicone for external joints?

It depends on the joint, the substrate and any specification. Specifications often refer to BS EN 15651-1 for facade sealants or BS EN 15651-2 for glazing and we follow the specified product.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

How we handle facade sealing in Hanger Hill

Our facade sealing work covers external facade joints, window and door perimeters, cladding panel joints and the perimeter joints where frames meet the structure on commercial buildings in Hanger Hill. Coping and flashing joints are included where sealant is the specified fix. If you have weathered joints at frame-to-structure perimeters and previous reseals run over old sealant, we can put it right, whatever the surface. A specialist sealant contractor works differently from a general builder: in Hanger Hill, that means joint design, primers and backing rod as standard.

A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.

The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Location
Hanger Hill (W3, W5, NW10)
Wider area
Greater London
Guarantee
12 months on every job
Price
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Leave it or put it right?

The longer a failed joint is left, the more the substrate suffers: wet edges break down, so repairs may be needed before resealing. Acting at the first sign of splitting keeps the fix simple. Getting scaffold, permits or access booked in Hanger Hill takes effort, so while access is arranged it pays to renew all failing joints, not just the worst.

Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.

Why choose Mastic Doctor in Hanger Hill

  • Over 20 years of commercial sealing
  • Products installed to the manufacturer’s instructions
  • One number for every site we cover
  • Standard and matched colours in many product ranges

Take a look at our cost guide and how we’re accredited.

Facades, frames and programmes in Hanger Hill

As part of Greater London, Hanger Hill 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. There are a good number of hotels within about 2 miles of Hanger Hill. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included.

On a healthcare site such as Cygnet Hospital Ealing (0.6 miles west of Hanger Hill), new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. When a college such as Ealing and West London College, 1.2 miles south-west of Hanger Hill, builds or refurbishes, the mastic package normally has to fit around students and staff.

Hanger Hill is about 1 mile north-west of Acton, in Greater London. We cover Hanger Hill, with the same fixed quotes and 12-month guarantee as everywhere else. 764 places across Greater London fall within our area, Hanger Hill among them. Sites around London have their own page, about 8 miles away.

We cover the W3, W5 and NW10 postcode districts for facade joints. For a building on Noel Road, Vale Lane and Links Road or nearby, we can quote for facade joints. If your building is just outside Hanger Hill, we cover Park Royal (1 mile north-east), West Twyford (1 mile north), Acton (1 mile south-east), South Acton (1 mile south) and Acton Green (2 miles south-east). Bigger towns within reach include London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (4 miles east), St Pancras (7 miles east) and Shoreditch (9 miles east).

Local landmarks in Hanger Hill

Around Hanger Hill, our work takes us to commercial buildings near The Ellen Wilkinson School for Girls, The Sir Michael Balcon pub and Library for Iranian Studies, among other places. Nearby too are The Ellen Wilkinson School for Girls (less than half a mile south-west) and Ealing Common (0.7 miles south-west). The closest station to Hanger Hill is Acton Main Line station, roughly 0.7 miles east of the centre. Well-known places in the area include Central Middlesex Hospital (1 mile north-east) and London Transport Museum Depot (1 mile south). Not far away are Castlebar Hill and Hanger Hill Wood.

Map of Hanger Hill © OpenStreetMap contributors

Different surfaces, different methods

Precast concrete panels

Concrete edges can be dusty or weak. We clean back to sound material and flag edges that need repair before sealing.

Cladding panel joints

Joints between cladding panels open and close with temperature. The sealant has to match the movement and the panel finish, as the specification sets out.

Cost factors for facade joints

There’s no standard rate for sealant work, since sites vary so much. What we look at:

  • Induction, permit and paperwork requirements
  • How much there is to seal
  • Joint width, depth and condition
  • Any access equipment needed

Whether it’s a single area or a whole estate, the same things set the price: 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.

Details that help us quote

Good information means a firmer quote. When you get in touch, include:

  • Your programme or deadline
  • A wide shot and a close-up of the area
  • Asbestos survey details if the building is older
  • The product your specification calls for

Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

On site: what to expect

Before we leave any area, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. All of Greater London is in the ULEZ, and kerbside space in Hanger Hill can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.

  1. First we review photographs, drawings or what we saw on a visit, and agree how each joint will be reached.
  2. The old bead is cut away completely, not overlaid.
  3. Both faces are cleaned and, where the product needs it, primed.
  4. Backing rod, or bond-breaker tape in shallow joints, limits the depth.
  5. The new sealant goes in and is tooled firmly onto both faces.
  6. We walk the finished joints with you before handing over.

What we need from you

  • Warn occupants and staff about the work
  • Flag any permit to work we will need
  • Point out any areas we must not close

Get a fixed quote

Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or use the quote form.

Get a quick quote

Read more

Common problems we fix in Hanger Hill

Most facade joints fail through age and weathering. The bead hardens, chalks on the surface and loses the flexibility to follow the joint, then it splits or peels.

Any of the following is a good reason to get the joints checked over:

  • Patch repairs that keep failing
  • Sealant pulling away from frames or panels
  • Cold air coming in at window perimeters
  • Weathered joints at frame-to-structure perimeters

For contractors on a campus like The University of West London, which lies south-west of Hanger Hill, facade and perimeter sealing has to fit around students and term dates.

What to look for in a quote

  • Whether primer will be used where the manufacturer specifies it
  • How they handle RAMS and site documents
  • Proof of insurance
  • The named product and why it was chosen

Choosing a commercial sealant contractor

Owners, agents and contractors

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

Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

Accreditations

Trusted. Accredited. Insured.