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

Facade and window perimeter sealing in Kennington, Greater London

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

  • Old perimeter mastic that has dried out
  • Discoloured or dirty facade joints
  • Failed seals around shopfront and entrance frames
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS accredited
£5m PL insurance

Facade sealing for businesses in Kennington

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

Facade sealing in Kennington, done properly

Weather decides a lot in facade sealing. Joints have to be dry and the air and surface temperature within the product’s range, so frosty or damp mornings can hold work back. We build that into the programme and tell you if the forecast changes the plan. If you have air leaks through failed facade joints and sealant pulling away from frames or panels, we can put it right. A single leaking joint is often how a building in Kennington first comes to us: we look at the rest while we are there and tell you what we find.

The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Kennington must meet its standards or pay the daily charge. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.

Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

Place
Kennington (SW8, SW1P, SE11)
Wider area
Greater London
Guarantee
12 months on every job
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Building owners, agents and FMs in Kennington

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Kennington can form part of a wider programme across Greater London.

Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.

Facades, frames and programmes in Kennington

Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Kennington. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. Kennington has plenty of hotels close by, all within 2 miles. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included.

For contractors on a campus like University of the Arts London, 1.4 miles west of Kennington, facade and perimeter sealing has to fit around students and term dates. Hotel extensions and refits, at places such as Belgrave Hotel London (under half a mile east of Kennington), normally run between busy periods, so the sealing is squeezed into short windows.

Kennington is about 2 miles south-west of London, in Greater London. If you’re looking for facade sealing in Kennington, we can help, as we do across Greater London. Kennington is one of 764 places in Greater London on our list for facade joints.

Commercial sites across SW8, SW1P and SE11 are covered for facade joints. Among the streets we cover are Kay Road, Lett Road and Rita Road, and sites on any of them can send details for a fixed quote. With the A203 and A3204 nearby, Kennington is easy to get to with materials and equipment. Nearby places we also cover include Oval (1 mile north), South Lambeth (1 mile south-west), Little Portugal (1 mile south), North Brixton (1 mile south-east) and Vauxhall (1 mile north) for facade joints. A short drive away, we cover City of Westminster (3 miles north-west), Marylebone (3 miles north-west), Kensington (4 miles west), St Pancras (3 miles north), Shoreditch (4 miles north-east) and Walthamstow (8 miles north-east).

What’s near Kennington

Recent enquiries here include premises near St Peter's School, Archbishop Tenison's Church of England School and Lambeth Palace Library, among other places. Nearby too are Crown and Thistle pub (less than half a mile south-west) and Vauxhall Park (under half a mile north-west). Kennington has its own railway station: Vauxhall station. A little further out are Baynard's Castle (2.2 miles north) and Type Museum (0.5 miles south). For a walk, there’s Bellenden Road Nature Garden and Ludgate Hill.

Map of Kennington © OpenStreetMap contributors

FAQs: Kennington

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

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Let us know which documents your site asks for, and we will confirm them alongside the quote.

Do you take on work at healthcare sites like Gordon Hospital?

Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Are you CHAS accredited and on Constructionline?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

Is colour matching possible?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We’ll confirm the colours available for the specified product.

Is Kennington in your area?

Yes. Kennington is in our area, within our coverage of Greater London, South East England and Scotland. To discuss a job, call the office on 01277 525 020 or email the details over.

Can you handle several sites?

Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.

How many days will you need on site?

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

After the work

Once the work is signed off, a little attention goes a long way:

  • Confirm the survey covers external sealants in older buildings
  • Never let anyone seal over old sealant
  • Plan facade sealing alongside redecoration
  • Don’t wait for a second leak before calling

Look at perimeter and panel joints as part of routine building checks. Signs to look for are cracking, edges lifting, chalking and stiffness.

Check older buildings for asbestos before disturbing old mastic. Some older mastics contain it, and if it’s suspected, we stop until it has been tested.

Quoting for work in Kennington

There’s no standard rate for sealant work, since sites vary so much. What we take into account:

  • Distance, for remote addresses
  • Joint width, depth and condition
  • Site requirements such as inductions and permits
  • Specialist products, such as fire-rated or hygienic sealants

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

Details that help us quote

A good diagnosis starts with the right details. Tell us:

  • The postcode of the building
  • Asbestos survey details if the building is older
  • Any specification or named product
  • Approximate linear metres or a joint schedule

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, call the office on 01277 525 020 or email the details over.

Our process

At the end of each section, we remove the tape, clean down and inspect every joint with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out. In Kennington, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. Each joint is cut out and the edges inspected.
  4. Faces are cleaned, primed where needed and backed.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. We hand over with our 12-month workmanship guarantee.

What we need from you

  • Point out parking and an unloading spot
  • Tell us your opening times and when work is allowed
  • Make sure the joints can be reached

Quotes

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.

Ask for a quote

Read more

Doing it in-house

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

Signs you need facade sealing in Kennington

When sealant lets go of a frame or panel, the cause is often the preparation. Dust, old sealant residue, damp or a missing primer stop it bonding properly, and the joint opens with the first real movement.

If one of these sounds familiar, it’s time for a closer look:

  • Discoloured or dirty facade joints
  • Patch repairs that keep failing
  • Water coming in around window frames
  • Air leaks through failed facade joints

Recladding or extending a unit at a site like Handel Business Centre (less than half a mile north-west of Kennington) brings panel joints and frame perimeters into the programme.

Before you book anyone

  • Are they CHAS accredited or on Constructionline?
  • The terms of the workmanship guarantee
  • Whether primer will be used where the manufacturer specifies it
  • Will failed sealant be removed rather than covered?

How to choose a sealant contractor

Accreditations

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