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

Facade Sealing contractors in Perivale

We carry out facade joint and window perimeter sealing on commercial buildings in Perivale and the surrounding area. Send details for a fixed quote.

  • Perimeter joints where frames meet the structure
  • Draughts around frames and panels
  • Staining on stone next to old sealant
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Facade sealing in Perivale

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Facade sealing for commercial buildings in Perivale

Sealant around windows, doors and cladding panels stops rain reaching the wall behind. Once a perimeter seal fails, water tracks in around frames and panels. We cut out failed facade joints and reseal them with a facade-grade sealant suited to the movement. Most enquiries involve previous reseals run over old sealant and hard, chalky sealant that no longer flexes, across stone and brick facade joints, cladding panel joints and coping and flashing joints. Most enquiries from Perivale start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.

Construction in a London area such as Perivale means working on constrained sites: small compounds, delivery slots and shared hoists and scaffold. Mastic is typically one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Location
Perivale (UB6, HA0, W5)
Region
Greater London
Guarantee
A 12-month guarantee
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

From enquiry to sign-off

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, with the work itself typically taking longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. All of Greater London is in the ULEZ, and kerbside space in Perivale can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. Access, site rules and timing are settled with the client up front.
  2. Weather and temperature are checked against the product’s limits.
  3. We remove the old bead and check the edges are sound.
  4. Faces are cleaned, primed where needed and backed.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. Once signed off, the work carries our 12-month guarantee.

Getting the site ready

  • Agree which areas must stay open
  • Move anything stored against the joints
  • Send asbestos survey details if the building is pre-2000

Get a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, phone 01277 525 020 or email drawings and photos.

Get a quick quote

Read more

How the quote is worked out

The price varies from site to site. It mainly depends on:

  • Specialist products, such as fire-rated or hygienic sealants
  • The size and state of each joint
  • The site’s rules and procedures
  • Travel to remote or island sites

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

Details that help us quote

A few photographs plus some basic facts will normally do. Please tell us:

  • When you need the work done
  • Anything awkward about access or site hours
  • Whether an asbestos survey exists
  • What the building is and how it’s used

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, give us a call on 01277 525 020 or email a schedule or drawings.

Leave it or put it right?

Open facade joints also let air and dirt through: draughts around frames add to heating costs and complaints. A new seal closes the gap for both. In Perivale, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.

Every site prices differently: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.

What you get with us

  • Fixed quotes based on photos, drawings or a visit
  • Colour agreed before work starts
  • Over 20 years of commercial sealing
  • Constructionline member for supplier checks

Take a look at our cost guide and our accreditations and insurance.

Looking after the joints

For the best life from the joints:

  • Avoid harsh cleaners on facade sealant
  • Keep the sealant details on the building file
  • Avoid patch repairs on failed facade joints
  • Add perimeter sealant to planned maintenance checks

Hold back any cleaning crew until the joints have had their stated cure time. Keep high-pressure jets and strong chemicals away from new sealant, so brief your window cleaners.

Coordinate facade sealing with other external works. One set-up for several trades saves money and limits disruption.

Different surfaces, different methods

Precast concrete panels

Precast panel joints have to absorb thermal and structural movement. We use a sealant with the right movement capability, set over backing rod with primer where the product requires it.

Window and door perimeters

Perimeter joints move as frames expand and contract in the sun. The rod limits depth, leaving the bead able to flex without tearing.

Questions about Perivale

Is a hospital such as Cygnet Hospital Ealing somewhere you can work?

Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Can you work around term dates at a campus such as University of West London?

Yes. We plan campus work around teaching, exams and residence turnarounds. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.

How do I request a quote?

The quote form is the simplest route, though you can also speak to us on 01277 525 020 or email us. Include photos or drawings if you have them.

Do you install glazing systems?

No. Glazing, windows and glass replacement aren’t part of our work. We seal the joints around them, such as perimeter joints where frames meet the structure.

How long does a typical visit take?

The duration is planned around your programme and the access we are given. You will have an expected duration with the quote.

Who decides which product is used?

A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

Do you cover Perivale?

Yes. Sites across Perivale are covered, and the same phone number covers every area.

Site staff or a sealant specialist?

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Facades, frames and programmes in Perivale

Site traffic in Perivale falls within London’s ULEZ, like everywhere else in Greater London. Delivery slots and scarce storage shape how and when the mastic goes in. There are a good number of hotels within about 2 miles of Perivale. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included.

Units on estates such as Phoenix Trading Estate (0.6 miles east of Perivale) tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal. When a college such as Alexander Cromwell College (to the east of Perivale) builds or refurbishes, the mastic package normally has to fit around students and staff. New wings at hospitals like Cygnet Hospital Ealing (to the south-east of Perivale) bring long runs of window and panel joints to seal.

Perivale is about 1 mile east of Greenford, in Greater London. Across the UB6 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 764 places in Greater London, large and small. For work in that direction, see our London page.

We take on facade joints across the UB6, HA0 and W5 postcode area. Buildings on Lee Road, Wicket Road and Bilton Road are within our area for facade joints. If your building is just outside Perivale, we cover Pitshanger (1 mile south), Brentham Garden Suburb (1 mile south-east), Sudbury Hill (1 mile north), Sudbury (1 mile north) and Greenford (1 mile west). Bigger towns within reach include London (10 miles east), City of Westminster (7 miles east), Marylebone (8 miles east), Kensington (6 miles south-east), St Pancras (9 miles east) and Shoreditch (10 miles east).

Local landmarks in Perivale

Recent enquiries here include premises near Alperton Community School, Castle Bar Park and Brentham Clubhouse pub. For rail, the closest station is South Greenford station, about 0.8 miles south-west. Nearby you’ll also find London Transport Museum Depot (2.8 miles south-east) and London Designer Outlet (1.9 miles north-east). The countryside around Perivale includes Middle Lake and Castlebar Hill.

Map of Perivale © OpenStreetMap contributors
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