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

Facade and window perimeter sealing in Kingston upon Thames, Greater London

Commercial sealant work in Kingston upon Thames for contractors, FMs and building owners: facade joint and window perimeter sealing on commercial buildings, with a fixed quote first.

  • Facade joints cracked through the middle
  • New sealant peeling off old mastic
  • Cladding panel joints that have opened up
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Facade sealing near Kingston upon Thames

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

Commercial clients in Kingston upon Thames

Whether you’re 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.

Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

About our facade sealing in Kingston upon Thames

We are often asked to look at water coming in around frames. Very often the perimeter bead has cracked or lost its grip, though that isn’t the only cause. If the evidence points away from the sealant, we say so before quoting. We work on coping and flashing joints, perimeter joints where frames meet the structure and stone and brick facade joints, and what we are called in for most is unsightly perimeter sealant on a visible elevation and new sealant peeling off old mastic. A specialist sealant contractor works differently from a general builder: on jobs in Kingston upon Thames, preparation and product choice get the time they need.

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.

We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.

Location
Kingston upon Thames (KT2, KT1, TW10)
Region
Greater London
Guarantee
A 12-month guarantee
Price
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Mastic packages on Kingston upon Thames sites

Plenty of hotels sit less than 2 miles from Kingston upon Thames. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight. Site traffic in Kingston upon Thames falls within London’s ULEZ, like everywhere else in Greater London. Deliveries are booked and storage is tight, so mastic materials come in as needed.

For contractors on a campus like Kingston University Knight's Park Campus, 0.7 miles to the south of Kingston upon Thames, facade and perimeter sealing has to fit around students and term dates. Hospital estates such as Kingston Hospital (0.7 miles east of Kingston upon Thames) 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. Work at a hotel such as Former Griffin Hotel (to the south-west of Kingston upon Thames) tends to be programmed around bookings, mastic included.

Kingston upon Thames is about 7 miles south-west of Kensington, in Greater London. Anywhere in KT2, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Across Greater London, 764 places are covered, including Kingston upon Thames. There’s a separate page for London, roughly 11 miles from Kingston upon Thames.

Postcode districts covered here: KT2, KT1 and TW10 for facade joints. Buildings on Sigrist Square, Old London Road and London Road are within our area for facade joints. Being close to the B3365, Kingston upon Thames is straightforward for us to reach. If your building is just outside Kingston upon Thames, we cover Norbiton (1 mile east), Coombe (2 miles east), New Malden (2 miles south-east), Coombe Hill (2 miles north-east) and Motspur Park (2 miles east). Further afield, our area takes in London (11 miles north-east), City of Westminster (9 miles north-east), Marylebone (10 miles north-east), Kensington (7 miles north-east), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).

Landmarks near Kingston upon Thames

We work on buildings around Canbury Gardens, The Grey Horse pub and Kingston Grammar School. Kingston upon Thames has its own railway station: Kingston station. Other landmarks nearby include Eel Pie Island Museum (2.6 miles north-west) and Kingston Hospital (0.7 miles east). Green spaces nearby include Rose Walk and Kingston Hill Road area.

Map of Kingston upon Thames © OpenStreetMap contributors

How a job runs

We schedule the visit to fit the site hours and access windows you give us. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For a job in Kingston upon Thames, access comes first. Give us the hours we can be on site and we’ll schedule to suit.

  1. We plan access and the order of elevations with the client.
  2. We only seal when joints are dry and within the product’s temperature range.
  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. We hand over with our 12-month workmanship guarantee.

What we need from you

  • Send your site hours and access windows
  • For older buildings, check the asbestos register before work
  • Send any specification or drawings in advance

Request a quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.

Get a price

Advice

Honest limits

A proper diagnosis includes knowing what sealant can’t do. You’ll hear from us if the cause turns out to be one of these:

  • Leaks from roofs, gutters or failed flashings rather than sealant joints
  • Specialist high-level access methods
  • Installing or repairing glazing systems

If you are not sure, just speak to us on 01277 525 020 or email us and we’ll give you a straight answer.

Joints and surfaces we work on

  • Shopfront frames
  • Coping and flashing joints
  • Perimeter joints where frames meet the structure
  • Stone and brick facade joints
  • Cladding panel joints
  • Window and door perimeters

What the job involves on each surface

Window and door perimeters

Perimeter joints move as frames expand and contract in the sun. Rod placed at the right depth lets the bead stretch as the frame moves.

Coping and flashing joints

Coping and flashing joints are included where sealant is the specified fix. They sit in the most exposed positions on the building.

What happens if it’s left?

If access is already up for other work, resealing at the same time makes sense. Coordinating facade sealing with other external works avoids paying for access twice, saving a second set-up. Repeat call-outs disrupt occupied London buildings, so a proper job first time, with the old sealant fully removed, is worth it.

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well.

Why clients in Kingston upon Thames choose us

  • Colour agreed before work starts
  • Failed material removed, not covered up
  • Coloured sealants to suit the setting, where available
  • Fully insured, including public liability cover

Read how commercial sealant jobs are priced or our accreditations.

After the work

To get the most from the new sealant:

  • Record the product and colour used on each elevation
  • Check that rainwater leaves the facade the way it was designed to
  • Keep pressure washers away from fresh sealant
  • Confirm the survey covers external sealants in older buildings

Let the new sealant cure before washing the facade or windows near it. Pressure washers and harsh cleaners can damage a fresh bead, so brief your window cleaners.

Get the joint design right when resealing: the right width, backing rod and a sealant with enough movement capability. A well-designed joint lasts longer than a like-for-like copy of a failed one.

Your questions answered

Does your area include sites such as Fairfield Trade Park, near Kingston upon Thames?

Yes. We cover Kingston upon Thames and the area around it, including industrial estates, business parks and retail parks such as Fairfield Trade Park. A few photographs and the unit address let us price the work.

Can you work around term dates at a campus such as Kingston University Knight's Park Campus?

Yes, holiday working periods are the norm on campus jobs. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Will rain stop the work?

We can work through the year, but sealant needs a dry joint and temperatures within the product’s range. Cold, damp mornings can delay a start.

How long do sealant joints last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.

What type of sealant goes on window perimeters?

Most facade and window perimeter joints take a low-modulus neutral-cure silicone. Some joints call for hybrid, PU or polysulphide instead, depending on the substrate and the specification.

Do you cover Kingston upon Thames?

Yes. We cover Kingston upon Thames, and the simplest way to start is to phone 01277 525 020 or email us.

Can staff carry on working while you are here?

Yes, as long as we plan it. We agree a sequence with your contact so just one area at a time is disrupted.

Accreditations

Trusted. Accredited. Insured.